Lockheed Martin F-22 Raptor

"F22" redirects here. For other uses, seeF22 (disambiguation).

TheLockheed Martin/Boeing F-22 Raptoris an Americantwin-engine,all-weather,supersonicstealthfighter aircraft.As a product of theUnited States Air Force'sAdvanced Tactical Fighter(ATF) program, the aircraft was designed as anair superiority fighter,but also incorporatesground attack,electronic warfare,andsignals intelligencecapabilities. The prime contractor,Lockheed Martin,built most of the F-22 airframe and weapons systems and conducted final assembly, while program partnerBoeingprovided the wings,aftfuselage,avionicsintegration, and training systems.

F-22 Raptor
F-22 Raptor flies overKadena Air Base,Japan on a flight training mission
General information
Type	Air superiority fighter
National origin	United States
Manufacturer	Lockheed Martin Aeronautics Boeing Integrated Defense Systems
Status	In service
Primary user	United States Air Force
Number built	195 (8 test and 187 production aircraft)
History
Manufactured	1996–2011
Introduction date	15 December 2005
First flight	7 September 1997(1997-09-07)
Developed from	Lockheed YF-22
Developed into	Lockheed Martin X-44 MANTA Lockheed Martin FB-22

First flown in 1997, the F-22 descended from theLockheed YF-22and was variously designatedF-22andF/A-22before it formally entered service in December 2005 as theF-22A.Although the U.S. Air Force (USAF) had originally planned to buy a total of 750 ATFs to replace itsF-15 Eagles,it later scaled down to 381, and the program was ultimately cut to 195 aircraft — 187 of them operational models — in 2009 due to political opposition from high costs, a perceived lack of air-to-air threats at the time of production, and the development of the more affordable and versatileF-35.The last aircraft was delivered in 2012.

The F-22 is a critical component of the USAF's current high-end tactical airpower. While it had a protracted development and initial operational difficulties, the aircraft became the service's leading counter-air platform against peer adversaries. Although designed for air superiority operations, the F-22 has also performed strike and electronic surveillance, including missions in theMiddle Eastagainst theIslamic StateandAssad-aligned forces. The F-22 is planned to remain a cornerstone of the USAF's fighter fleet until its succession by the crewedNext Generation Air Dominancefighter.

Development

Origins

Main articles:Advanced Tactical FighterandLockheed YF-22

ATF SPO Patch, 1990

The F-22 originated from theAdvanced Tactical Fighter(ATF) program that the U.S. Air Force (USAF) initiated in 1981 to replace theF-15 EagleandF-16 Fighting Falcon.Intelligence reports indicated that their effectiveness would be eroded by emerging worldwide threats emanating from theSoviet Union,including new developments in surface-to-air missile systems for integrated air defense networks, the introduction of theBeriev A-50"Mainstay" airborne warning and control system (AWACS), and the proliferation of theSukhoi Su-27"Flanker" andMikoyan MiG-29"Fulcrum" class of fighter aircraft.Code-named "Senior Sky",the ATF would become an air superiority fighter program influenced by these threats; in the potential scenario of a Soviet andWarsaw Pactinvasion inCentral Europe,the ATF was envisaged to support theair-land battleby spearheadingoffensiveand defensive counter-air operations (OCA/DCA) in this highly contested environment that would then enable following echelons of NATO strike and attack aircraft to performair interdictionagainst ground formations; to do so, the ATF would make an ambitious leap in capability and survivability by taking advantage of the new technologies in fighter design on the horizon, includingcomposite materials,lightweightalloys,advanced flight control systems and avionics, more powerful propulsion systems for supersonic cruise (orsupercruise) around Mach 1.5, and stealth technology for low observability.

The USAF published an ATFrequest for information(RFI) to the aerospace industry in May 1981, and following a period of concept and specification development, the ATF System Program Office (SPO) issued the demonstration and validation (Dem/Val)request for proposals(RFP) in September 1985, with requirements placing strong emphasis on stealth, supersonic cruise and maneuver. The RFP saw some alterations after its initial release, including more stringent signature reduction requirements in December 1985 and adding the requirement for flying technology demonstrator prototypes in May 1986.Owing to the immense investments required to develop the advanced technologies, teaming between companies was encouraged. Of the seven bidding companies,LockheedandNorthropwere selected on 31 October 1986.Lockheed, through itsSkunk Worksdivision atBurbank, California,teamed withBoeingandGeneral Dynamicswhile Northrop teamed withMcDonnell Douglas.These two contractor teams undertook a 50-month Dem/Val phase, culminating in the flight test of two technology demonstrator prototypes, theLockheed YF-22andNorthrop YF-23;while they represented competing designs, the prototypes were meant for demonstrating concept viability and risk mitigation rather than a competitive flyoff.Concurrently,Pratt & WhitneyandGeneral Electriccompeted for the ATF engines.

Evolution of the F-22 design from 1987, with the bottom being the production configuration

Dem/Val was focused onsystem engineering,technology development plans, and risk reduction over point aircraft designs; in fact, after down-select, the Lockheed team completely redesigned the airframe in the summer of 1987 due to weight analysis, with notable changes including thewing planformfrom swept trapezoidal to diamond-like delta and a reduction in forebody planform area.The team extensively used analytical and empirical methods includingcomputational fluid dynamicsandcomputer-aided designsoftware,wind tunneltesting (18,000 hours for Dem/Val), andradar cross-section(RCS) calculations and pole testing. Avionics systems were tested in ground prototypes and flying laboratories.During Dem/Val, the SPO usedtrade studiesfrom both teams to review ATF requirements and adjust ones that were significant weight and cost drivers while having marginal value. The short takeoff and landing (STOL) requirement was relaxed to deletethrust-reversers,saving substantial weight.Side looking radarsand the dedicatedinfrared search and track(IRST) system were eventually removed as well, although space and cooling provisions were retained to allow for their later addition. Theejection seatwas downgraded from a fresh design to the existingACES II.Despite efforts by the contractor teams to rein in weight, the takeoff gross weight estimates grew from 50,000 to 60,000 lb (22,700 to 27,200 kg), resulting in engine thrust requirement increasing from 30,000 to 35,000 lbf (133 to 156 kN) class.

Each team built two prototype air vehicles for Dem/Val, one for each of the two engine options. The YF-22 had its maiden flight on 29 September 1990 and in testing successfully demonstrated supercruise, high angle-of-attack maneuvers, and the firing of air-to-air missiles from internal weapons bays. After the flight test of the demonstrator prototypes atEdwards Air Force Base,the teams submitted the results and their design proposals — or Preferred System Concept — for full-scale development in December 1990; on 23 April 1991,Secretary of the USAFDonald Riceannounced the Lockheed team and Pratt & Whitney as the winners of the ATF and engine competitions.Both designs met or exceeded all performance requirements; the YF-23 was considered stealthier and faster, but the YF-22, with its thrust vectoring nozzles, was more maneuverable as well as less expensive and risky, having flown considerably more test sorties and hours than its counterpart.The press also speculated that the Lockheed team's design was more adaptable to the Navy Advanced Tactical Fighter (NATF) for replacing theF-14 Tomcat,but by fiscal year (FY) 1992, theU.S. Navyhad abandoned NATF due to cost.

Full-scale development

As the program moved to full-scale development, orEngineering & Manufacturing Development(EMD), the production F-22 design (internally designated as Configuration 645) evolved to have notable differences from the immature YF-22 demonstrator, despite having similar configuration.The external geometry saw significant alterations; the wing'sleading edgesweep angle was decreased from 48° to 42°, while the vertical stabilizers were shifted rearward and decreased in area by 20%.The radome shape was changed for better radar performance, the wingtips were clipped for antennas, and the dedicated airbrake was eliminated. To improve pilot visibility and aerodynamics, the canopy was moved forward 7 inches (18 cm) and the engine inlets moved rearward 14 inches (36 cm). The shapes of the fuselage, wing, andstabilatortrailing edges were refined to improve aerodynamics, strength, and stealth characteristics. The internal structural design was refined and reinforced, with the production airframe designed for a service life of 8,000 hours.The revised shaping was validated with over 17,000 additional hours of wind tunnel testing and further RCS testing atHelendale, Californiaand the USAFRATSCAT rangebefore first flight. Increasing weight during EMD due to demanding ballistic survivability requirements andadded capabilitiescaused slight reductions in projected range and maneuver performance.

An EMD F-22 alongside the Flying Test Bed

Aside from advances in air vehicle and propulsion technology, the F-22's avionics were unprecedented in complexity and scale for a combat aircraft, with thefusionof multiple sensors systems and antennas, including electronic warfare, communication/navigation/identification (CNI), and software integration of 1.7 millionlines of codewritten inAda;the avionics often became the pacing factor of the whole program. In light of rapidly advancing computing and semiconductor technology, the avionics was to employ theDepartment of Defense's (DoD)PAVE PILLARsystems architecture andVery High Speed Integrated Circuit(VHSIC) program technology; the avionics had computing and processing requirements equivalent to multiple contemporaryCraysupercomputers in order to achieve sensor fusion.To enable early looks and troubleshooting for mission software development, the software was ground-tested in Boeing's Avionics Integration Laboratory (AIL) and flight-tested on aBoeing 757modified with F-22 mission systems, called Flying Test Bed.Because much of the F-22's avionics design occurred in the 1990s as the electronics industry was shifting from military to commercial applications as the predominant market, avionics upgrade efforts was initially difficult and protracted due to changing industry standards; for instance,C/C++rather than Ada became predominant programming languages.

Manufacturers of the F-22

The roughly equal division of work amongst the team largely carried through from Dem/Val to EMD, with prime contractor Lockheed responsible for the forward fuselage and control surfaces, General Dynamics for the center fuselage, and Boeing for aft fuselage and wings. Lockheedacquired General Dynamics' fighter portfolio atFort Worth, Texasin 1993 and thus had the majority of the airframe manufacturing, and merged withMartin Mariettain 1995 to formLockheed Martin.While Lockheed primarily performed Dem/Val work at its Skunk Works sites in Burbank and Palmdale,California,it shifted its program office and EMD work from Burbank toMarietta, Georgia,where it performed final assembly;Boeingmanufactured airframe components, performed avionics integration and developed the training systems inSeattle, Washington.The EMD contract originally ordered seven single-seat F-22As and two twin-seat F-22Bs, although the latter was canceled in 1996 to reduce development costs and the orders were converted to single seaters.The first F-22A, an EMD aircraft with tail number 4001, was unveiled atAir Force Plant 6inDobbins Air Reserve Basein Marietta on 9 April 1997 where it was officially named "Raptor".The aircraft first flew on 7 September 1997, piloted by chief test pilot Alfred "Paul" Metz.The Raptor's designation was briefly changed to F/A-22 starting in September 2002, mimicking the Navy'sF/A-18 Hornetand intended to highlight a planned ground-attack capability amid debate over the aircraft's role and relevance. The F-22 designation was reinstated in December 2005, when the aircraft entered service.

An EMD F-22 refuels from aKC-135during testing; the attachment on the back top is for a spin recovery chute

The F-22 flight test program consisted of flight sciences, developmental test (DT), and initial operational test and evaluation (IOT&E) by the411th Flight Test Squadron(FLTS) at Edwards AFB, California, as well as follow-on OT&E and development of tactics and operational employment by the422nd Test and Evaluation Squadron(TES) atNellis AFB,Nevada.Nine EMD jets assigned to the 411th FLTS would participate in the test program under the Combined Test Force (CTF) at Edwards. The first two aircraft conducted envelope expansion testing such as flying qualities, air vehicle performance, propulsion, and stores separation. The third aircraft, the first to have production-level internal structure, tested flight loads, flutter, and stores separation, while two non-flying F-22s were built for testing static loads and fatigue. Subsequent EMD aircraft and the Boeing 757 FTB tested avionics, environmental qualifications, and observables, with the first combat-capable Block 3.0 software flying in 2001.Air vehicle testing resulted in several structural design modifications and retrofits for earlier lots, including tail fin strengthening to resolve buffeting in certain conditions.Raptor 4001 was retired from flight testing in 2000 and subsequently sent to Wright-Patterson AFB for survivability testing, including live fire testing and battle damage repair training.Other retired EMD F-22s have been used as maintenance trainers.

An EMD F-22 of the 411th FLTS flies over Edwards AFB, California, in 2018

Because the F-22 had been designed to defeat contemporary and projected Soviet fighters, the end of theCold Warand thedissolution of the Soviet Unionin 1991 had major impacts on program funding; the DoD reduced its urgency for new weapon systems and the following years would see successive reductions in its budget. This resulted in the F-22's EMD being rescheduled and lengthened multiple times. Furthermore, the aircraft's sophistication and numerous technological innovations required extensive testing, which exacerbated the cost overruns and delays, particularly from mission avionics. Some capabilities were also deferred to post-service upgrades, reducing the upfront cost but increasing total program cost.The program transitioned to full-rate production in March 2005 and completed EMD that December, after which the test force had flown 3,496 sorties for over 7,600 flight hours.As the F-22 was designed for upgrades throughout its lifecycle, the 411th FLTS and 422nd TES continued the DT/OT&E and tactics development of these upgrades.Derivatives such as theX-44thrust vectoring research aircraft and theFB-22medium-range regional bomber were proposed in the late 1990s and early 2000s, although these were eventually abandoned. In 2006, the F-22 development team won theCollier Trophy,American aviation's most prestigious award.Due to the aircraft's sophisticated capabilities, contractors have been targeted by cyberattacks and technology theft.

Production and procurement

The USAF originally envisioned ordering 750 ATFs at a total program cost of $44.3 billion and procurement cost of $26.2 billion in FY 1985 dollars, with production beginning in 1994 and service entry in the mid-to-late 1990s. The 1990 Major Aircraft Review (MAR) led bySecretary of DefenseDick Cheneyreduced this to 648 aircraft beginning in 1996 and service entry in the early-to-mid 2000s. After the end of the Cold War, this was further curtailed to 442 in the 1993 Bottom-Up Review while the USAF eventually set its requirement to 381 to support itsAir Expeditionary Forcestructure with the last deliveries in 2013. Throughout development and production, the program was continually scrutinized for its costs and less expensive alternatives such as modernized F-15 or F-16 variants were being proposed, even though the USAF considered the F-22 to provide the greatest capability increase against peer adversaries for the investment.However, funding instability had reduced the total to 339 by 1997 and production was nearly halted byCongressin 1999.Although funds were eventually restored, the planned number continued to decline due to delays and cost overruns during EMD, slipping to 277 by 2003.In 2004, with its focus on asymmetriccounterinsurgencywarfare inIraqandAfghanistan,the DoD under SecretaryDonald Rumsfeldfurther cut procurement to 183 production aircraft, despite the USAF's requirement for 381;funding for this number was reached by a multi-year procurement contract awarded in 2006, with aircraft distributed to seven combat squadrons; total program cost was projected to be $62 billion (~$90.2 billion in 2023).In 2008, the Congressional defense spending bill raised the number to 187.

F-22 production would support over 1,000 subcontractors and suppliers from 46 states and up to 95,000 jobs, and spanned 15 years at a peak rate of roughly two airplanes per month, about half of the initially planned rate from the 1990 MAR; after EMD aircraft contracts, the first production lot was awarded in September 2000.As production wound down in 2011, the total program cost was estimated to be about $67.3 billion (about $360 million for each production aircraft delivered), with $32.4 billion spent on Research, Development, Test, and Evaluation (RDT&E) and $34.9 billion on procurement and military construction in then year dollars. Theincremental costfor an additional F-22 was estimated at $138 million (~$191 million in 2023) in 2009.

In total, 195 F-22s were built. The first two were EMD aircraft in theBlock1.0configuration for initial flight testing and envelope expansion, while the third was a Block 2.0 aircraft built to represent the internal structure of production airframes and enabled it to test full flight loads. Six more EMD aircraft were built in the Block 10 configuration for development and upgrade testing, with the last two considered essentially production-quality jets. Production for operational squadrons consisted of 74 Block 10/20 training aircraft and 112 Block 30/35 combat aircraft for a total of 186 (or 187 when accounting for Production Representative Test Vehicles and certain EMD jets);one of the Block 30 aircraft is dedicated to flight sciences at Edwards AFB.By 2020, Block 20 aircraft from Lot 3 onward were upgraded to Block 30 standards under the Common Configuration Plan, increasing the Block 30/35 fleet to 149 aircraft while 37 remained in the Block 20 configuration for training.

Ban on exports

Two F-22s during flight testing, the upper one being the first EMD F-22, Raptor 4001

In order to prevent the inadvertent disclosure of the aircraft's stealth technology and classified capabilities to U.S. adversaries,annual DoD appropriations acts since FY1998 have included a provision prohibiting the use of funds made available in each act to approve or license the sale of the F-22 to any foreign government.Customers for U.S. fighters are acquiring earlier designs such as the F-15 Eagle and F-16 Fighting Falcon or the newerF-35 Lightning II,which contains technology from the F-22 but was designed to be cheaper, more flexible, and available for export.In September 2006, Congress upheld the ban on foreign F-22 sales.Despite the ban, the 2010 defense authorization bill included provisions requiring the DoD to report on the costs and feasibility for an F-22 export variant, and another report on the effect of export sales on the U.S. aerospace industry.

Some Australian defense officials and politicians have expressed interest in procuring the F-22; in 2008, theChief of the Defence Force,Air Chief MarshalAngus Houston,stated that the aircraft was being considered by theRoyal Australian Air Force(RAAF) as a potential supplement to the F-35.Some defense commentators have even advocated for the purchase in lieu of the planned F-35s, citing the F-22's known capabilities and F-35's delays and developmental uncertainties.However, considerations for the F-22 were later dropped and theF/A-18E/F Super Hornetwould serve as the RAAF's interim aircraft prior to the F-35's service entry.

The Japanese government also showed interest in the F-22. TheJapan Air Self-Defense Force(JASDF) would reportedly require fewer fighters for its mission if it obtained the F-22, thus reducing engineering and staffing costs.With the end of F-22 production, Japan chose the F-35 in December 2011.At one point the Israeli Air Force had hoped to purchase up to 50 F-22s. In November 2003, however, Israeli representatives announced that after years of analysis and discussions with Lockheed Martin and the DoD, they had concluded that Israel could not afford the aircraft.Israel eventually purchased the F-35.

Production termination

Throughout the 2000s when the U.S. was primarily fighting counterinsurgency wars in Iraq and Afghanistan, the USAF's requirement for 381 F-22s was questioned over rising costs, initial reliability and availability problems, limited multirole versatility, and a lack of relevant adversaries for air combat missions.In 2006,Comptroller General of the United StatesDavid Walkerfound that "the DoD has not demonstrated the need" for more investment in the F-22,and further opposition was expressed byBush AdministrationSecretary of Defense Rumsfeld and his successorRobert Gates,Deputy Secretary of DefenseGordon R. England,and Chairman ofU.S. Senate Armed Services Committee(SASC) SenatorsJohn WarnerandJohn McCain.Under Rumsfeld, procurement was severely cut to 183 aircraft. The F-22 lost influential supporters in 2008 after the forced resignations of Secretary of the Air ForceMichael Wynneand the Chief of Staff of the Air Force GeneralT. Michael Moseley.In November 2008, Gates stated that the F-22 lacked relevance inasymmetricpost-Cold War conflicts,and in April 2009, under theObama Administration,he called for production to end in FY 2011 after completing 187 F-22s.

Two F-22As in close trail formation

The loss of staunch F-22 advocates in the upper DoD echelons resulted in the erosion of its political support. In July 2008, GeneralJames Cartwright,Vice Chairman of theJoint Chiefs of Staff,stated to the SASC his reasons for supporting the termination of F-22 production, including shifting resources to the multi-service F-35 and the electric warfareEA-18G Growler.Although Russian and Chinese fighter developments fueled concern for the USAF, Gates dismissed this and in 2010, he set the F-22 requirement to 187 aircraft by lowering the number of major regional conflict preparations from two to one, despite an effort by Wynne's and Moseley's successorsMichael Donleyand GeneralNorton Schwartzto raise the number to 243; according to Schwartz, he and Donley finally relented in order to convince Gates to preserve theLong Range Strike Bomberprogram.After PresidentBarack Obamathreatened tovetofurther production at Gates' urging, both the Senate and House agreed to abide by the 187 cap in July 2009.Gates highlighted the F-35's role in the decision,and believed that the U.S. would maintain its stealth fighter numbers advantage by 2025 even with F-35 delays.In December 2011, the 195th and final F-22 was completed out of 8 test and 187 production aircraft built; the jet was delivered on 2 May 2012.

After production ended, F-22 tooling and associated documentation were retained and mothballed at theSierra Army Depotto support repairs and maintenance throughout the fleet life cycle, as well as the possibility of a production restart or a Service Life Extension Program (SLEP).The Marietta plant space was repurposed to support theC-130Jand F-35, while engineering work for sustainment and upgrades continued at Fort Worth, Texas and Palmdale, California.The curtailed production forced the USAF to extend the service of 179 F-15C/Ds until 2026—well beyond its planned retirement—and replace those with new-buildF-15EX,which took advantage of an active production line for export customers to minimize non-recurring start-up costs, in order to retain adequate numbers of air superiority fighters.

In April 2016, Congress directed the USAF to conduct a cost study and assessment associated with resuming production of the F-22, citing advancing threats from Russia and China.On 9 June 2017, the USAF submitted their report stating they had no plans to restart the F-22 production line due to cost-prohibitive economic and logistical challenges; it estimated it would cost approximately $50 billion to procure 194 additional F-22s at a cost of $206–216 million per aircraft, including approximately $9.9 billion for non-recurring start-up costs and $40.4 billion for acquisition with the first delivery in the mid-to-late 2020s. The long gap since the end of production meant hiring new workers, sourcing replacement vendors, and finding new plant space, contributing to the high start-up costs and lead times. The USAF believed that the funding would be better invested in its next-generation Air Superiority 2030 effort, which evolved into theNext Generation Air Dominance.

Modernization and upgrades

The F-22 and its subsystems were designed to be upgraded over its life cycle via numbered Incrementsand Operational Flight Program (OFP) updates in anticipation for technological advances and evolving threats, although this initially proved difficult and costly due to the highly integrated avionics systems architecture.Amid debates over the airplane's relevance in asymmetric counterinsurgency warfare, the first upgrades primarily focused on ground attack, or strike capabilities.Joint Direct Attack Munitions(JDAM) employment was added with Increment 2 in 2005 andSmall Diameter Bomb(SDB) was integrated with 3.1 in 2011; the improved AN/APG-77(V)1 radar, which incorporates air-to-ground modes, was certified in March 2007 and fitted on airframes from Lot 5 onward.To addressoxygen deprivation issues,F-22s were fitted with an automatic backup oxygen system (ABOS) and modified life support system starting in 2012.

A Block 30 F-22A, serial 06-4132, of the411th Flight Test Squadrontest-fires an AIM-9X in 2015.

In contrast to prior upgrades, Increment 3.2 emphasized air combat capabilities with updates to electronic warfare, CNI (including Link 16 receive), and geolocation as well asAIM-9XandAIM-120Dintegration. Fleet releases of the two-part process began in 2013 and 2019 respectively. Concurrently, OFP updates addedAutomatic Ground Collision Avoidance System,cryptographic enhancements, and improved avionics stability, among others.AMIDS-JTRSterminal, which includes Mode 5IFFand Link 16 transmit/receive capability, was installed starting in 2021.To address obsolescence and modernization difficulties, the F-22's mission computers were upgraded in 2021 with military-hardenedcommercial off-the-shelf(COTS) open mission system (OMS) processor modules with a modular open systems architecture (MOSA).Agile software developmentprocess in conjunction with an orchestration system was implemented to enable faster upgrades from additional vendors, and software updates shifted away from Increments developed using thewaterfall modelto numbered annual releases.

Additional upgrades currently being tested include new sensors and antennas, integration of new weapons including theAIM-260 JATM,and reliability improvements such as more durable stealth coatings; the dedicated infrared search and track (IRST), originally deleted during Dem/Val, is one of the sensors added.Other developments include all-aspect IRST functionality for the Missile Launch Detector (MLD),manned-unmanned teaming (MUM-T) capability with uncrewedcollaborative combat aircraft(CCA) or "loyal wingmen", and cockpit improvements.To preserve the aircraft's stealth while enabling additional payload and fuel capacity, stealthy external carriage has been investigated since the early-2000s, with a low drag, low-observable external tank and pylon currently under development to increase stealthy combat radius.The F-22 has also been used to test technology for its eventual successor from the NextGenerationAir Dominance (NGAD) program; some advances are to be applied to the F-22 as well.

Not all proposed upgrades have been implemented. The plannedMultifunction Advanced Data Link(MADL) integration was cut due to development delays and lack of proliferation. Although theGentex/Raytheon(nowThales USA) Scorpionhelmet-mounted cuing system(HMCS) was successfully tested on the F-22 in 2013, funding cuts prevented its deployment.While Block 20 aircraft from Lot 3 onwards have been upgraded to Block 30/35 under the Common Configuration Plan, Lockheed Martin in 2017 had also proposed upgrading all remaining Block 20 training aircraft to Block 30/35 as well to increase numbers available for combat; this was not pursued due to other budget priorities.

Aside from modernizations, the F-22's structural design and construction was improved over the course of the production run; for instance, aircraft from Lot 3 onwards had improved stabilators built byVought.The fleet underwent a $350 million "structures repair/retrofit program" (SRP) to resolve problems identified during testing as well as address improper titanium heat treatment in the parts of early batches.By January 2021, all aircraft had gone through the SRP to ensure full service lives for the entire fleet.The F-22 has also been used to test and qualify alternative fuels, including a synthetic jet fuel consisting of 50/50 mix ofJP-8and aFischer–Tropsch process-produced, natural gas-based fuel in August 2008, and a 50% mixture of biofuel derived fromcamelinain March 2011.

Design

Overview

F-22 flight demonstration video

The F-22 Raptor (internally designated Configuration 645) is afifth-generationair superiority fighter that is considered fourth generation instealth aircrafttechnology by the USAF.It is the first operational aircraft to combine supercruise,supermaneuverability,stealth, and integrated avionics (or sensor fusion) in a singleweapons platformto enable it to survive and conduct missions, primarily offensive and defensive counter-air operations, in highly contested environments.

The F-22's shape combines stealth and aerodynamic performance. Planform and panel edges are aligned at common angular aspects and the surfaces, also aligned accordingly, have continuous curvature to minimize the aircraft's radar cross-section.Its clipped diamond-likedelta wingshave the leading edge swept 42°, trailing edge swept −17°, a slight anhedral and a conical camber to reduce supersonicwave drag.The shoulder-mounted wings are smoothly blended into the fuselage with fourempennagesurfaces andleading edge root extensionsrunning to the caret inlets' upper edges, where the forebody chines also meet. Flight control surfaces includeleading-edge flaps,flaperons,ailerons,rudderson the cantedvertical stabilizers,and all-moving horizontal tails (stabilators); forair braking,the ailerons deflect up, flaperons down, and rudders outwards to increase drag.Owing to the focus on supersonic performance,area ruleis applied extensively to the airplane's shape and nearly all of the fuselage volume lies ahead of the wing's trailing edge to reduce drag at supersonic speeds, with the stabilators pivoting from tail booms extending aft of the engine nozzles.Weapons are carried internally in the fuselage for stealth. The jet has a retractabletricycle landing gearand an emergencytailhook.Fire suppression system and fuel tankinerting systemare installed for survivability.

The aircraft's dualPratt & Whitney F119augmentedturbofanengines are closely spaced and incorporate rectangular two-dimensionalthrust vectoringnozzles with a range of ±20 degrees in thepitch-axis;the nozzles are fully integrated into the F-22's flight controls and vehicle management system. Each engine has dual-redundantHamilton Standardfull-authority digital engine control (FADEC) and maximumthrustin the 35,000lbf(156 kN) class. The F-22'sthrust-to-weight ratioat typical combat weight is nearly at unity in maximum military power and 1.25 in fullafterburner.The fixed shoulder-mountedcaret inletsare offset from the forward fuselage to divert the turbulentboundary layerand generate oblique shocks with the upper inboard corners to ensure good total pressure recovery and efficient supersonic flow compression.Maximum speed without external stores is approximatelyMach1.8 in supercruise at military/intermediate power and greater than Mach 2 with afterburners.With 18,000 lb (8,165 kg) of internal fuel and an additional 8,000 lb (3,629 kg) in two 600-gallon external tanks, the jet has a ferry range of over 1,600 nmi (1,840 mi; 2,960 km).The aircraft has a refueling boom receptacle centered on its spine and anauxiliary power unitembedded in the left wing root.

F-22 flying with itsPratt & Whitney F119engines on full afterburner during testing

The F-22's high cruise speed and operating altitude over prior fighters improve the effectiveness of its sensors and weapon systems, and increase survivability against ground defenses such assurface-to-air missiles.Its ability to supercruise, or sustainsupersonicflight without using afterburners, allows it to intercept targets that afterburner-dependent aircraft would lack the fuel to reach. The use of internalweapons bayspermits the aircraft to maintain comparatively higher performance over most other combat-configured fighters due to a lack ofparasitic dragfrom external stores.The F-22's thrust and aerodynamics enable regular combat speeds of Mach 1.5 at 50,000 feet (15,000 m), thus providing 50% greater employment range for air-to-air missiles and twice the effective range for JDAMs than with prior platforms.Its structure contains a significant amount of high-strength materials to withstandstressand heat of sustained supersonic flight. Respectively,titanium alloysandbismaleimide/epoxy composites comprise 42% and 24% of the structural weight; the materials and multipleloadpath structural design also enable good ballistic survivability.

The airplane's aerodynamics,relaxed stability,and powerful thrust-vectoring engines give it excellent maneuverability and energy potential across its flight envelope, capable of 9-gmaneuvers at takeoff gross weight with full internal fuel.Its large control surfaces, vortex-generating chines and LERX, and vectoring nozzles provide excellent high Alpha (angle of attack) characteristics, and is capable of flying at trimmed Alpha of over 60° while maintaining roll control and performing maneuvers such as theHerbst maneuver(J-turn) andPugachev's Cobra;vortex impingement on the vertical tail fins did cause morebuffetingthan initially anticipated, resulting in the strengthening of the fin structure by changing the rear spar from composite to titanium.The computerized triplex-redundantfly-by-wirecontrol systemand FADEC make the aircraft highlydeparture resistantand controllable, thus giving the pilot carefree handling.

Stealth

For stealth, the F-22 carries weapons in internal bays. The doors for the center and side bays are open; the six LAU-142/A AMRAAM Vertical Eject Launchers (AVEL) are visible.

The F-22 was designed to be highly difficult to detect and track by radar, with radio waves reflected,scattered,ordiffractedaway from the emitter source towards specific sectors, or absorbed and attenuated. Measures to reduce RCS include airframe shaping such as alignment of edges and continuous curvature of surfaces, internal carriage of weapons, fixed-geometryserpentine inletsand curved vanes that prevent line-of-sight of the engine fan faces and turbines from any exterior view, use ofradar-absorbent material(RAM), and attention to detail such as hinges and pilot helmets that could provide a radar return.The F-22 was also designed to have decreased radio frequency emissions,infrared signatureandacoustic signatureas well asreduced visibility to the naked eye.The aircraft's rectangular thrust-vectoring nozzles flatten the exhaust plume and facilitate its mi xing with ambient air throughshed vortices,which reduces infrared emissions to mitigate the threat ofinfrared homing( "heat seeking" ) surface-to-air orair-to-air missiles.Additional measures to reduce the infrared signature include special topcoat andactive coolingto manage the heat buildup from supersonic flight.

Compared to previous stealth designs, the F-22 is less reliant on RAM, which are maintenance-intensive and susceptible to adverse weather conditions, and can undergo repairs on the flight line or in a normal hangar without climate control. The F-22 incorporates aSignature Assessment Systemwhich delivers warnings when the radar signature is degraded and necessitates repair.While the F-22's exact RCS isclassified,in 2009 Lockheed Martin released information indicating that from certain angles the airplane has an RCS of 0.0001 m²or −40dBsm– equivalent to the radar reflection of a "steel marble"; the aircraft can mount aLuneburg lensreflector to mask its RCS.For missions where stealth is required, themission capable rateis 62–70%.Beginning in 2021, the F-22 has been seen testing a new chrome-like surface coating, speculated to help reduce the F-22's detectability by infrared tracking systems.

Front fuselage detail of an F-22

The effectiveness of the stealth characteristics is difficult to gauge. The RCS value is a restrictive measurement of the aircraft's frontal or side area from the perspective of a static radar. When an aircraft maneuvers it exposes a completely different set of angles and surface area, potentially increasing radar observability. Furthermore, the F-22's stealth contouring and radar-absorbent materials are chiefly effective against high-frequency radars, usually found on other aircraft. The effects ofRayleigh scatteringand resonance mean thatlow-frequency radarssuch asweather radarsandearly-warning radarsare more likely to detect the F-22 due to its physical size. These are also conspicuous, susceptible toclutter,and have low precision.Additionally, while faint or fleeting radar contacts make defenders aware that a stealth aircraft is present, reliably vectoring interception to attack the aircraft is much more challenging.

Avionics

An F-22 releases a flare during a training flight

The aircraft has an integrated avionics system where through sensor fusion, data from all onboard sensor systems as well as off-board inputs are filtered and processed into a combined tactical picture, thus enhancing the pilot'ssituational awarenessand reducing workload. Key mission systems includeSanders/General Electric AN/ALR-94 electronic warfare system,Martin MariettaAN/AAR-56infraredandultravioletMissile Launch Detector(MLD),Westinghouse/Texas InstrumentsAN/APG-77active electronically scanned array(AESA) radar,TRWCommunication/Navigation/Identification (CNI) suite, andRaytheonadvancedinfrared search and track(IRST) being tested.

The APG-77 radar has a low-observable, active-aperture, electronically scanned antenna with multiple targettrack-while-scanin all weather conditions; the antenna is tilted back for stealth. Its emissions can be focused to overload enemy sensors as anelectronic attackcapability. The radar changes frequencies more than 1,000 times per second tolower interception probabilityand has an estimated range of 125–150 mi (201–241 km) against an 11 sq ft (1 m²) target and 250 mi (400 km) or more in narrow beams. The upgraded APG-77(V)1 provides air-to-ground functionality through synthetic aperture radar (SAR) mapping,ground moving target indication/track(GMTI/GMTT), and strike modes.The ALR-94 electronic warfare system, among the most technically complex equipment on the F-22, integrates more than 30 antennas blended into the wings and fuselage for all-roundradar warning receiver(RWR) coverage and threat geolocation. It can be used as a passive detector capable of searching targets at ranges (250+nmi) exceeding the radar's, and can provide enough information for a target lock and cue radar emissions to anarrow beam(down to 2° by 2° in azimuth and elevation). Depending on the detected threat, the defensive systems can prompt the pilot to release countermeasures such as flares or chaff. The MLD uses six sensors to providefull sphericalinfrared coverage while the advanced IRST, housed in a stealthy wing pod, is a narrow field-of-view sensor for long-range passive identification and targeting.To ensure stealth in the radio frequency spectrum, CNI emissions are strictly controlled and confined to specific sectors, with tactical communication between F-22s performed using the directional Inter/Intra-Flight Data Link (IFDL); the integrated CNI system, which incorporates a MIDS-JTRS terminal, also managesTACAN,IFF (includingMode 5), and communication through various methods such asHAVE QUICK/SATURN andSINCGARS.The aircraft was also upgraded with an automatic ground collision avoidance system (GCAS).

A CIP unit for the F-22

Information from radar, CNI, and other sensors are processed by twoHughesCommon Integrated Processor (CIP) mission computers, each capable of processing up to 10.5 billioninstructions per second.The F-22's baseline software has some 1.7 millionlines of code,the majority involving the mission systems such as processing radar data.The highly integrated nature of the avionics architecture system, as well as the use of the programming languageAda,has made the development and testing of upgrades challenging. To enable more rapid upgrades, the CIPs were upgraded withCurtiss-Wrightopen mission systems (OMS) processor modules as well as a modular open systems architecture called the Open Systems Enclave (OSE) orchestration platform to allow the avionics suite to interface withcontainerizedsoftware from third-party vendors.

The F-22's ability to operate close to the battlefield gives the aircraft threat detection and identification capability comparative with theRC-135 Rivet Joint,and the ability to function as a "mini-AWACS",though its radar is less powerful than those of dedicated platforms. This allows the F-22 to rapidly designate targets for allies and coordinate friendly aircraft.Although communication with other aircraft types was initially limited to voice, upgrades have enabled data to be transferred through aBattlefield Airborne Communications Node(BACN) or via JTIDS/Link 16traffic through MIDS-JTRS.TheIEEE 1394Bbusdeveloped for the F-22 was derived from the commercial IEEE 1394 "FireWire" bus system.In 2007, the F-22's radar was tested as a wireless data transceiver, transmitting data at 548 megabits per second and receiving at gigabit speed, far faster than the Link 16 system.The radio frequency receivers of the electronic support measures (ESM) system give the aircraft the ability to performintelligence, surveillance, and reconnaissance(ISR) tasks.

Cockpit

Cockpit of the F-22, showing instruments, head-up display and throttle top (lower left)

The F-22 has aglass cockpitwith all-digital flight instruments. The monochromehead-up displayoffers a wide field of view and serves as a primaryflight instrument;information is also displayed upon six colorliquid-crystal display(LCD) panels.The primary flight controls are a force-sensitiveside-stickcontroller and a pair of throttles. The USAF initially wanted to implementdirect voice input(DVI) controls, but this was judged to be too technically risky and was abandoned.The canopy's dimensions are approximately 140 inches long, 45 inches wide, and 27 inches tall (355 cm × 115 cm × 69 cm) and weighs 360 pounds.The canopy was redesigned after the original design lasted an average of 331 hours instead of the required 800 hours.

The F-22 has integrated radio functionality, the signal processing systems are virtualized rather than as a separate hardware module.The integrated control panel (ICP) is a keypad system for entering communications, navigation, and autopilot data. Two 3 in × 4 in (7.6 cm × 10.2 cm) up-front displays located around the ICP are used to display integrated caution advisory/warning (ICAW) data, CNI data and also serve as the stand-by flight instrumentation group and fuel quantity indicator for redundancy.The stand-by flight group displays anartificial horizon,for basicinstrument meteorological conditions.The 8 in × 8 in (20 cm × 20 cm)primary multi-function display(PMFD) is located under the ICP, and is used for navigation and situation assessment. Three 6.25 in × 6.25 in (15.9 cm × 15.9 cm) secondary multi-function displays are located around the PMFD for tactical information and stores management.

The ejection seat is a version of the ACES II commonly used in USAF aircraft, with a center-mounted ejection control.The F-22 has a complexlife support system,which includes the onboard oxygen generation system (OBOGS), protective pilot garments, and a breathing regulator/anti-g (BRAG) valve controlling flow and pressure to the pilot's mask and garments. The pilot garments were developed under the Advanced Technology Anti-G Suit (ATAGS) project and protect against chemical/biological hazards andcold-water immersion,counterg-forcesand low pressure at high altitudes, and provide thermal relief.Following a series of hypoxia-related issues, the life support system was consequently revised to include an automatic backup oxygen system and a new flight vest valve.In combat environments, the ejection seat includes a modifiedM4 carbinedesignated the GAU-5/A.

Armament

OneAIM-120 AMRAAM(right) and fourGBU-39 SDB(left) fitted in the main weapons bay of an F-22

The F-22 has three internal weapons bays: a large main bay on the bottom of the fuselage, and two smaller bays on the sides of the fuselage, aft of the engine inlets; a small bay for countermeasures such as flares is located behind each side bay.The main bay is split along the centerline and can accommodate six LAU-142/A launchers for beyond-visual-range (BVR) missiles and each side bay has an LAU-141/A launcher for short-range missiles. The primary air-to-air missiles are theAIM-120 AMRAAMand theAIM-9 Sidewinder,with planned integration of theAIM-260 JATM.Missile launches require the bay doors to be open for less than a second, during which pneumatic or hydraulic arms push missiles clear of the aircraft; this is to reduce vulnerability to detection and to deploy missiles during high-speed flight.An internally mountedM61A2 Vulcan20 mmrotary cannonis embedded in the airplane's right wing root with themuzzlecovered by a retractable door.The radar projection of the cannon fire's path is displayed on the pilot's head-up display.

Although designed for air-to-air missiles, the main bay can replace four launchers with two bomb racks that can each carry one 1,000 lb (450 kg) or four 250 lb (110 kg) bombs for a total of 2,000 pounds (910 kg) of air-to-surface ordnance.In 2024, Lockheed Martin disclosed its proposedMakohypersonicmissile, a 1,300 lb (590 kg) weapon that can be carried internally in the F-22.While capable of carrying weapons with GPS guidance such as JDAMs and SDBs, the F-22 cannot self-designate laser-guided weapons.

F-22 with external weapons pylons

While the F-22 typically carries weapons internally, the wings include fourhardpoints,each rated to handle 5,000 lb (2,300 kg). Each hardpoint can accommodate a pylon that can carry a detachable 600-gallon(2,270 L) external fuel tank or a launcher holding two air-to-air missiles; the two inboard hardpoints are "plumbed" for external fuel tanks. The two outboard hardpoints have since been dedicated to a pair of stealthy pods housing the IRST and mission systems. The aircraft can jettison external tanks and their pylon attachments to restore its low observable characteristics andkinematicperformance.

Maintenance

Each F-22 requires a three-week packaged maintenance plan (PMP) every 300 flight hours.Its stealth coatings were designed to be more robust and weather-resistant than those of earlier stealth aircraft,yet early coatings failed against rain and moisture when F-22s were initially posted toGuamin 2009.Stealth measures account for almost one third of maintenance, with coatings being particularly demanding.F-22 depot maintenance is performed at Ogden Air Logistics Complex atHill AFB,Utah; considerable care is taken during maintenance due to the small fleet size and limited attrition reserve.

F-22s were available for missions 63% of the time on average in 2015, up from 40% when it was introduced in 2005. Maintenance hours per flight hour was also improved from 30 early on to 10.5 by 2009, lower than the requirement of 12; man-hours per flight hour was 43 in 2014. When introduced, the F-22 had a Mean Time Between Maintenance (MTBM) of 1.7 hours, short of the required 3.0; this rose to 3.2 hours in 2012.By fiscal year 2015, the cost per flight hour was $59,116, while the user reimbursement rate was approximately US$35,000 (~$41,145 in 2023) per flight hour in 2019.

Operational history

Introduction into service

An F-22 fires an AIM-120 AMRAAM

The F-22 underwent extensive testing before its service introduction. While the first production aircraft was delivered to Edwards AFB in October 2002 for IOT&E and the first jet for the 422nd TES at Nellis AFB arrived in January 2003, IOT&E was continually pushed back from its planned start in mid-2003, with mission avionics stability being particularly challenging.Following a preliminary assessment, called OT&E Phase 1, formal IOT&E began in April 2004 and was completed in December of that year. This milestone marked the successful demonstration of the jet's air-to-air mission capability, although the jet was more maintenance intensive than expected.A Follow-On OT&E (FOT&E) in 2005 cleared the F-22's air-to-ground mission capability.

The first combat ready F-22 of the 1st Fighter Wing arrived atLangley AFB,Virginia in January 2005 and that December, the USAF announced that the aircraft had achieved Initial Operational Capability (IOC) with the 94th Fighter Squadron.The unit subsequently participated inExercise Northern Edge06 in Alaska in June 2006 and ExerciseRed Flag07–2 at Nellis AFB in February 2007, where it demonstrated the F-22's greatly increased air combat capabilities when flying against Red ForceAggressorF-15s and F-16s with a simulated kill ratio of 108–0. These large force exercises also further refined the F-22's operational tactics and employment.

The F-22 achieved Full Operational Capability (FOC) in December 2007, when GeneralJohn CorleyofAir Combat Command(ACC) officially declared the F-22s of the integrated active duty1st Fighter WingandVirginia Air National Guard192d Fighter Wingfully operational.This was followed by an Operational Readiness Inspection (ORI) of the integrated wing in April 2008, in which it was rated "excellent" in all categories, with a simulated kill-ratio of 221–0.The fielding of the F-22 with its precision strike capability also contributed to the retirement of the F-117 from operational service in 2008, with the49th Fighter Wingoperating the F-22 for a brief period prior to a series of fleet consolidations to reduce long term operational costs;further consolidations to improve availability and pilot training were recommended by the Government Accountability Office in 2018.

Training

2005: An F-22 of the43rd Fighter Squadronflies alongside anF-15of the27th Fighter Squadron.

The43rd Fighter Squadronwas reactivated in 2002 as the F-22 Formal Training Unit (FTU) for the type's basic course atTyndall AFBand the first aircraft for pilot training was delivered in September 2003. Following severe damage to the installation in the wake ofHurricane Michaelin 2018, the squadron and its aircraft were relocated to nearby Eglin AFB; although it was initially feared that several jets were lost due to storm damage, all were later repaired and flown out.The FTU and its aircraft were reassigned to the71st Fighter Squadronat Langley AFB in 2023.

As of 2014, B-Course students require 38 sorties to graduate (previously 43 sorties). Track 1 course pilots, pilots retraining from other aircraft, also saw a reduction in the number of sorties needed to graduate, from 19 to 12 sorties.F-22 students are first trained on theT-38 Talontrainer aircraft. Additional pilot training takes place on the F-16 because the aging T-38 is not rated to sustain higher G-forces and lacks modern avionics.Due to a lack of a modern trainer stand-in that can accurately emulate the F-22, the Air Force often uses F-22s to supplement training, which is costly as the F-22 costs almost 10 times more than the T-38 per flight hour.The upcomingT-7 Red Hawkfeatures modern avionics that better approximate those of the F-22 and F-35.This is scheduled to enter initial operating capability in 2027, several years behind schedule.In 2014 the Air Force stood up the2nd Fighter Training Squadronat Tyndall AFB which was equipped with T-38s to serve asadversary aircraftto reduce adversary training flights on the F-22s.To reduce operating costs and prolong the F-22's service life, some pilot training sorties are performed using flight simulators.The advanced F-22 weapons instructor course atUSAF Weapons Schoolis conducted by the433rd Weapons Squadronat Nellis AFB.

Initial operational problems

During the initial years of service, F-22 pilots experienced symptoms as a result of oxygen system issues that include loss of consciousness, memory loss,emotional labilityand neurological changes as well as lingering respiratory problems and a chronic cough; the issues resulted in a fatal mishap in 2010 and four-month grounding in 2011 and subsequent altitude and distance flight restrictions.In August 2012, the DoD found that the BRAG valve, which inflated the pilot's vest during high-gmaneuvers, was defective and restricted breathing and the OBOGS (onboard oxygen generation system) unexpectedly fluctuated oxygen levels at highg.A Raptor Aeromedical Working Group had recommended changes in 2005 regarding oxygen supply that were unfunded but received further consideration in 2012.The F-22 CTF and 412th Aerospace Medicine Squadron eventually determined breathing restrictions as the root cause; coughing symptoms were attributed to accelerationatelectasisfrom highgexposure and OBOGS deliveringexcessive oxygen concentration.The presence of toxins and particles in some ground crew was deemed unrelated.Modifications to the life support and oxygen systems, including the installation of an automatic backup, allowed altitude and distance restrictions to be lifted in April 2013.

Operational service

An F-22 from Elmendorf AFB, Alaska, intercepting a RussianTupolev Tu-95bomber near American airspace

Following IOC and large-scale exercises, the F-22 flew its first homeland defense mission in January 2007 underOperation Noble Eagle.In November 2007, F-22s of 90th Fighter Squadron atElmendorf AFB,Alaska, performed their firstNorth American Aerospace Defense Command(NORAD) interception of two RussianTu-95MSbombers.Since then, F-22s have also escorted probingTu-160bombers.

The F-22 was first deployed overseas in February 2007 with the 27th Fighter Squadron toKadena Air Basein Okinawa, Japan.This first overseas deployment was initially marred by problems when six F-22s flying fromHickam AFB,Hawaii, experienced multiple software-related system failures while crossing theInternational Date Line(180th meridianoflongitude). The aircraft returned to Hawaii by followingtanker aircraft.Within 48 hours, the error was resolved and the journey resumed.Kadena would be a frequent rotation for F-22 units; they have also been involved in training exercises in South Korea, Malaysia, and the Philippines.

Defense Secretary Gates initially refused to deploy F-22s to the Middle East in 2007;the type made its first deployment in the region atAl Dhafra Air Basein the UAE in 2009. In April 2012, F-22s have been rotating into Al Dhafra, less than 200 miles from Iran.In March 2013, the USAF announced that an F-22 had intercepted an Iranian F-4 Phantom II that approached within 16 miles of anMQ-1 Predatorflying off the Iranian coastline.

An F-22refuelingprior to combat operations in Syria, September 2014

On 22 September 2014, F-22s performed the type's first combat sorties by conducting some of the opening strikes ofOperation Inherent Resolve,theAmerican-led intervention in Syria;aircraft dropped 1,000-pound GPS-guided bombs onIslamic Statetargets nearTishrin Dam.Between September 2014 and July 2015, F-22s flew 204 sorties over Syria, dropping 270 bombs at some 60 locations.Throughout their deployment, F-22s conducted close air support (CAS) and also deterred Syrian, Iranian, and Russian aircraft from attacking U.S.-backed Kurdish forces and disrupting U.S. operations in the region.F-22s also participated in theU.S. strikesthat defeated pro-Assadand RussianWagner Groupparamilitary forces nearKhashamin eastern Syria on 7 February 2018.These strikes notwithstanding, the F-22's main role in the operation was conductingintelligence, surveillance and reconnaissance.The aircraft also performed missions in other regions of the Middle East; in November 2017, F-22s operating alongsideB-52sbombedopiumproduction and storage facilities inTaliban-controlled regions of Afghanistan.

An F-22 lands on Iwo Jima (Iōtō) in April 2024 during Agile Reaper 24-1.

To increase deployment responsiveness and reduce logistical footprint in a peer or near-peer conflict, the USAF developed a deployment concept called Rapid Raptor which involves two to four F-22s and oneC-17for logistical support, first proposed in 2008 by two F-22 pilots. The goal was for the type to be able to set up and engage in combat within 24 hours in smaller and more austere environments that would enable more dispersed and survivable disposition of forces. This concept was tested at Wake Island in 2013 and Guam in late 2014.Four F-22s were deployed toSpangdahlem Air Basein Germany,Łask Air Basein Poland, andÄmari Air Basein Estonia in August and September 2015 to further test the concept and train with NATO allies in response to the Russian annexation of Crimea in 2014.The USAF would build on the principles of Rapid Raptor and eventually integrate it into its new operational concept calledAgile Combat Employment,which shifts towards distributed operations during peer conflicts; for instance, detachments of F-22s have operated from austere airfields onTinianandIwo Jimaduring exercises.

On 4 February 2023, an F-22 of the 1st Fighter Wing shot down a suspectedChinese spy balloonwithin visual range off the coast ofSouth Carolinaat an altitude of 60,000 to 65,000 feet (20,000 m),marking the F-22's first air-to-air kill.The wreckage landed approximately 6 miles offshore and was subsequently secured by ships of theU.S. NavyandU.S. Coast Guard.F-22s shot down additional high-altitude objectsnear the coast of Alaskaon 10 February andover Yukonon 11 February.

The USAF expects to begin retiring the F-22 in the 2030s as it gets replaced by theNext Generation Air Dominance(NGAD) crewed fighter.In May 2021, Air Force Chief of StaffCharles Q. Brown Jr.said that he envisioned a reduction in the future number of fighter fleets to "four plus one": the F-22 followed by NGAD, the F-35A, the F-15E followed by F-15EX, the F-16 followed by "MR-X", and theA-10;the A-10 was later dropped from the plans due that aircraft's accelerated retirement.In 2022 the Air Force requested that it be allowed to divest all but three of its Block 20 F-22s at Tyndall AFB.Congress denied the request to divest its 33 non-combat-coded Block 20 aircraft and passed language prohibiting the divestment through FY2026.While the Block 30/35 F-22 remains one of the USAF's top priorities and will be continually updated, the service believes the Block 20 aircraft is obsolescent and unsuitable even for training F-22 pilots and that upgrading them to Block 30/35 standards would be cost-prohibitive at $3.5 billion.

Variants

For the technology demonstrator prototype and proposed naval version, seeLockheed YF-22.

3-view drawings of the planned two-seat F-22B

F-22A

Single-seat version, was designatedF/A-22Ain early 2000s before reverting back toF-22Ain 2005; 195 built, consisting of 8 test and 187 production aircraft.

F-22B

Planned two-seat version with the same combat capabilities as the single-seat version, cancelled in 1996 to save development costs with test aircraft orders converted to F-22A.

Naval F-22 variant

Never formally designated, planned carrier-borne variant/derivative for the U.S. Navy's Navy Advanced Tactical Fighter (NATF) program. Because the NATF needed lower landing speeds than the F-22 foraircraft carrier operationswhile still attaining Mach 2-class speeds, the design would have incorporatedvariable-sweep wings;it would also have had expanded weapons carriage, including theAIM-152 AAAM,AGM-88 HARM,andAGM-84 Harpoon.Program was cancelled in 1991 due to tightening budgets.

Proposed derivatives

TheX-44 MANTA,ormulti-axis, no-tail aircraft,was a planned experimental aircraft based on the F-22 with enhanced thrust vectoring controls and no aerodynamic surface backup.The aircraft was to be solely controlled by thrust vectoring, without featuring any rudders, ailerons, or elevators. Funding for this program was halted in 2000.

TheFB-22was proposed in the early 2000s as a supersonic stealthregional bomberfor the USAF.The design went through several iterations and the later ones would combine an F-22 fuselage with greatly enlarged delta wings and was projected to carry up to 30 Small Diameter Bombs to over 1,600 nmi (3,000 km), about twice the combat range of the F-22A.The FB-22 proposals were cancelled with the 2006Quadrennial Defense Reviewand subsequent developments, in lieu of a larger subsonic strategic bomber with a much greater range; this became theNext-Generation Bomber,although it would be rescoped in 2009 as the Long Range Strike Bomber resulting in theB-21 Raider.

In August 2018, Lockheed Martin proposed an F-22 derivative to the Japan Air Self-Defense Force (JASDF) for its 5th/6th generationF-Xprogram. The design, which was later also proposed to the USAF, would combine a modified F-22 airframe with enlarged wings to increase fuel capacity and combat radius to 1,200 nmi (2,200 km) as well as the avionics and improved stealth coatings of theF-35.The proposal was ultimately not considered by the USAF or JASDF due to cost as well as existing export restrictions and industrial workshare concerns.

Operators

F-22 fromTyndall Air Force Base,Florida, cruising over theFlorida Panhandle

An F-22 landing at Holloman AFB, New Mexico

An F-22, based at Elmendorf AFB, Alaska, over mountain terrain

An F-22 during in-flight refueling with a tanker aircraft

F-22 withdrop tanksin transit toKadena Air Base,Japan, from Langley AFB, Virginia

TheUnited States Air Forceis the only operator of the F-22. As of August 2022, it has 183 aircraft in its inventory.

Air Combat Command

• 1st Fighter Wing-Joint Base Langley–Eustis,Virginia
  • 27th Fighter Squadron
  • 71st Fighter Squadron(Formal Training Unit)
  • 94th Fighter Squadron
• 49th Wing-Holloman Air Force Base,New Mexico
  • 7th Fighter Squadron
  • 8th Fighter Squadron
• 53d Wing-Eglin Air Force Base,Florida
  • 422d Test and Evaluation Squadron
• 57th Wing-Nellis Air Force Base,Nevada
  • 433d Weapons Squadron
• 325th Fighter Wing- Tyndall Air Force Base, Florida
  • 43d Fighter Squadron(inactivated in 2023)
  • 95th Fighter Squadron(activated in 2013, inactivated in 2018)

Pacific Air Forces

• 3rd Wing-Joint Base Elmendorf–Richardson,Alaska
  • 90th Fighter Squadron
  • 525th Fighter Squadron
• 15th Wing-Hickam Air Force Base,Hawaii
  • 19th Fighter Squadron(active associate unit)

Air National Guard

• 154th Wing- Hickam Air Force Base, Hawaii
  • 199th Fighter Squadron
• 192d Fighter Wing- Joint Base Langley–Eustis, Virginia
  • 149th Fighter Squadron(associate unit)

Air Force Reserve Command

• 477th Fighter Group– Joint Base Elmendorf–Richardson, Alaska
  • 302d Fighter Squadron(associate unit)

Air Force Material Command

• 412th Test Wing- Edwards Air Force Base, California
  • 411th Flight Test Squadron

Accidents

For accidents relating to the F-22's technology demonstrator, seeLockheed YF-22 § Accidents.

The first F-22 crash occurred duringtakeoffat Nellis AFB on 20 December 2004, in which the pilot ejected safely before impact.The investigation revealed that a brief interruption in power during an engine shutdown prior to flight caused a flight-control system malfunction;consequently the aircraft design was corrected to avoid the problem. Following a brief grounding, F-22 operations resumed after a review.

On 25 March 2009, an EMD F-22 crashed 35 miles (56 km) northeast of Edwards AFB during atest flight,resulting in the death of Lockheed Martin test pilotDavid P. Cooley.AnAir Force Materiel Commandinvestigation found that Cooley momentarily lost consciousness during a high-G maneuver, org-LOC,then ejected when he found himself too low to recover. Cooley was killed during ejection by blunt-forcetraumafrom windblast due to the aircraft's speed. The investigation found no design issues.

On 16 November 2010, an F-22 from Elmendorf AFB crashed, killing the pilot, Captain Jeffrey Haney. F-22s were restricted to flying below 25,000 feet, then grounded during the investigation.The crash was attributed to a bleed air system malfunction after an engine overheat condition was detected, shutting down theEnvironmental Control System(ECS) and OBOGS. The accident review board ruled Haney was to blame, as he did not react properly to engage theemergency oxygen system.Haney's widow sued Lockheed Martin, claiming equipment defects, and later reached a settlement.After the ruling, the emergency oxygen system engagement handle was redesigned and the entire system was eventually replaced by an automatic backup.On 11 February 2013, the DoD'sInspector Generalreleased a report stating that the USAF had erred in blaming Haney, and that facts did not sufficiently support conclusions; the USAF stated that it stood by the ruling.

On 15 November 2012, an F-22 crashed to the east ofTyndall AFBduring a training mission. The pilot ejected safely and no injuries were reported on the ground.The investigation determined that a "chafed" electrical wire ignited the fluid in a hydraulic line, causing a fire that damaged the flight controls.

On 15 May 2020, an F-22 fromEglin Air Force Basecrashed during a routine training mission shortly after takeoff; the pilot ejected safely. The cause of the crash was attributed to a maintenance error after an aircraft wash resulting in faulty air data sensor readings.

Aircraft on display

F-22A 91-4003 at the National Museum of the United States Air Force in Dayton, Ohio

• 91-4002 –Hill Air Force BaseAerospace Museum in Ogden, Utah
• 91-4003 –National Museum of the United States Air Forcein Dayton, Ohio

Specifications (F-22A)

F-22 Raptor 3-view drawings

USAF poster of key F-22 features and armament

F-22's underside with main bay doors open

F-22's diamond-like delta wing planform

Data fromUSAF,manufacturers' data,Aerofax,Aviation Week,Air Forces Monthly,andJournal of Electronic Defense

General characteristics

• Crew:1
• Length:62 ft 1 in (18.92 m)
• Wingspan:44 ft 6 in (13.56 m)
• Height:16 ft 8 in (5.08 m)
• Wing area:840 sq ft (78.04 m²)
• Aspect ratio:2.36
• Airfoil:NACA 6 series airfoil
• Empty weight:43,340 lb (19,700 kg)
• Gross weight:64,840 lb (29,410 kg)
• Max takeoff weight:83,500 lb (38,000 kg)
• Fuel capacity:18,000 lb (8,200 kg) internally, or 26,000 lb (12,000 kg) with 2× 600 U.S. gal tanks
• Powerplant:2 ×Pratt & Whitney F119-PW-100 augmentedturbofans,26,000 lbf (120 kN) thrust each dry, 35,000 lbf (160 kN) with afterburner

Performance

• Maximum speed:Mach 2.25, 1,500 mph (1,303 kn; 2,414 km/h) at altitude
  • Mach 1.21, 800 knots (921 mph; 1,482 km/h) at sea level
• Supercruise:Mach 1.76, 1,162 mph (1,010 kn; 1,870 km/h) at altitude
• Range:1,600 nmi (1,800 mi, 3,000 km) or more with 2 external fuel tanks
• Combat range:460 nmi (530 mi, 850 km) clean with 100 nmi (115 mi; 185 km) in supercruise
  • 595 nmi (685 mi; 1,102 km) clean subsonic
  • 750 nmi (863 mi; 1,389 km) with 100 nmi in supercruise with 2× 600 U.S. gal tanks
• Ferry range:1,740 nmi (2,000 mi, 3,220 km)
• Service ceiling:65,000 ft (20,000 m)
• g limits:+9.0/−3.0
• Wing loading:77.2 lb/sq ft (377 kg/m²)
• Thrust/weight:1.08 (1.25 with loaded weight and 50% internal fuel)

Armament

• Guns:1×20 mmM61A2 Vulcanrotary cannon,480 rounds
• Internal weapons bays:
  • Air-to-air mission loadout:
    • 6×AIM-120C/Dor4× AIM-120A/B AMRAAM
    • 2×AIM-9M/X Sidewinder
  • Air-to-ground mission loadout:
    • 2× 1,000 lb (450 kg)JDAMor8× 250 lb (110 kg)GBU-39 SDB
    • 2× AIM-120 AMRAAM
    • 2× AIM-9 Sidewinder
• Hardpoint (external):
  • 4× under-wing pylon stations can be fitted to carry weapons, each with a capacity of 5,000 lb (2,270 kg)or600 U.S. gallon (2,270 L)drop tanks
  • 4x AIM-120 AMRAAM (external)

Avionics

• AN/APG-77or AN/APG-77(V)1AESAradar: 125–150 miles (201–241 km) against 1 m²(11 sq ft) targets (estimated range), more than 250 miles (400 km) in narrow beams
• AN/AAR-56Missile Launch Detector(MLD)
• AdvancedInfrared Search and Track(IRST)
• AN/ALR-94electronic warfaresystem: 250 nautical miles (460 km) or more detection range forradar warning receiver(RWR)
• Integrated CNI Avionics including:
  • Inter/Intra-Flight Datalink (IFDL)
  • MIDS-JTRS
  • Link 16/JTIDS
  • IFF (Mode 5)
  • Embedded GPS/INS (EGI)
  • TACAN
  • HAVE QUICK/SATURN
  • SINCGARS
• MJU-39/40 flares for protection against IR missiles

See also

• Advanced Tactical Fighter
• Aircraft in fiction#F-22 Raptor

Related development

• Lockheed YF-22
• Lockheed Martin FB-22
• Lockheed Martin X-44 MANTA

Aircraft of comparable role, configuration, and era

• Chengdu J-20
• Lockheed Martin F-35 Lightning II
• Sukhoi Su-57
• TAI TF Kaan

Related lists

• List of fighter aircraft
• List of Lockheed aircraft
• List of active United States military aircraft
• List of megaprojects, Aerospace
• List of military electronics of the United States

References

Bibliography

• Aronstein, David C.; Hirschberg., Michael J.; Piccirillo, Albert C. (1998).Advanced Tactical Fighter to F-22 Raptor: Origins of the 21st Century Air Dominance Fighter.Arlington, Virginia:American Institute of Aeronautics & Astronautics.ISBN978-1-56347-282-4.
• Bolkcom, Christopher (12 June 2007).CRS Reports for Congress F-22A Raptor(PDF).Congressional Research Service(Report).Retrieved26 February2024.This article incorporates text from this source, which is in thepublic domain.
• Gertler, Jeremiah (11 July 2013)."Air Force F-22 Fighter Program"(PDF).Congressional Research Service.
• Goodall, James C (1992). "The Lockheed YF-22 and Northrop YF-23 Advanced Tactical Fighters".America's Stealth Fighters and Bombers: B-2, F-117, YF-22 and YF-23.St. Paul, Minnesota: Motorbooks International.ISBN0-87938-609-6.
• Jenkins, Dennis R.; Landis, Tony R. (2008).Experimental & Prototype U.S. Air Force Jet Fighters.North Branch, Minnesota: Specialty Press.ISBN978-1-58007-111-6.
• Miller, Jay (2005).Lockheed Martin F/A-22 Raptor, Stealth Fighter.Hinckley, UK: Midland Publishing.ISBN1-85780-158-X.
• Miller, Jay (1995).Lockheed Martin's Skunk Works: The Official History...Leicester, UK: Midland Publishing.ISBN1-85780-037-0.
• Mullin, Sherman N. (June 2012)."Winning the ATF"(PDF).Mitchell Institute for Airpower Studies.
• Mullin, Sherman N. (24 January 2019)."Oral history interview with Sherman Mullin. Second Interview".Aerospace Oral History Project(Interview). Interviewed by Westwick, Peter; Deverell, William. San Marino, California: The Huntington Library, Art Museum, and Botanical Gardens.
• Pace, Steve (1999).F-22 Raptor: America's Next Lethal War Machine.New York: McGraw-Hill.ISBN0-07-134271-0.
• Polmar, Norman (2005).The Naval Institute Guide to the Ships and Aircraft of the U.S. Fleet.Annapolis, Maryland: Naval Institute Press.ISBN978-1-59114-685-8.
• Sweetman, Bill(July 2000). "Fighter EW: The Next Generation".Journal of Electronic Defense.23(7).
• ------- (1998).F-22 Raptor.St. Paul, Minnesota, USA: Motorbooks International Publishing.ISBN0-7603-0484-X.
• Williams, Mel, ed. (2002). "Lockheed Martin F-22A Raptor".Superfighters: The Next Generation of Combat Aircraft.London: AIRtime Publishing.ISBN1-880588-53-6.

Further reading

• Wallace, Mike; Holder, William G. (1998).Lockheed-Martin F-22 Raptor: An Illustrated History.Atglen, PA:Schiffer Publishing.ISBN9780764305580.OCLC39910177.

External links

• Official website
• F-22 Demo at 2007 Capital Airshow in Sacramento – with narrative by F-22 pilot Paul "Max" Moga
• Contracting Strategy for F-22 Modernization - U.S. Department of Defense