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ASRAAM
Two ASRAAM (centre) on an RAF Typhoon in 2007
TypeShort-rangeair-to-air missile
Place of originUnited Kingdom
Service history
In service1998
Used byRAF, IAF
Production history
ManufacturerMBDA UK
Unit cost>£200,000
VariantsCommon Anti-aircraft Modular Missile (Sea Ceptor/Sky Sabre)
Specifications
Mass88 kg (194 lb)
Length2.90 m (9 ft 6 in)
Diameter166 mm (6.5 in) (motor diameter)[1]
Wingspan450 mm
Warhead10 kg (22 lb) blast/fragmentation
Detonation
mechanism
laserproximity fuzeand impact
Enginedual-burn, high-impulse solid rocket motor[2]
Operational
range
25+ km[3][4][5]
Flight altitudeN/A
Maximum speedMach 3+[6]
Guidance
system
infrared homing,128×128 elementfocal plane array,withlock-on after launch(LOAL) and strapdowninertial guidance[6]
Launch
platform
RAF Typhoon of3 Squadronfires ASRAAM in 2007
ASRAAM atILA 2006

TheAdvanced Short Range Air-to-Air Missile(ASRAAM), also known by its United States designationAIM-132,is an imaginginfrared homingair-to-air missile,produced byMBDA UK,that is designed for close-range combat. It is in service in theRoyal Air Force(RAF), replacing theAIM-9 Sidewinder.The ASRAAM is designed to allow the pilot to fire and then turn away before the opposing aircraft can close for a shot. It flies at well over Mach 3 to ranges in excess of 25 kilometres (16 mi).[3]It retains a 50 g maneuverability provided by body lift technology coupled with tail control.[7][1]

The project started as a British-German collaboration in the 1980s. It was part of a wider agreement in which the US would develop theAIM-120 AMRAAMfor medium-range use, while the ASRAAM would replace the Sidewinder with a design that would cover the great range disparity between the Sidewinder and the AMRAAM. Germany left the programme in 1989. The British proceeded on their own and the missile was introduced into RAF service in 1998. It is being introduced to theIndian Air Force,theQatar Air Forceand theRoyal Air Force of Oman,and formerly saw service in theRoyal Australian Air Force.

The ASRAAM is also the base design for theCommon Anti-Aircraft Modular Missile(CAMM) used by the British Army, Royal Navy and several allied forces in the surface-launched role. A surface-launched variant of the ASRAAM itself has been improvised for theArmed Forces of Ukraine.

History

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Prior work

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The first extensive use of IR missiles took place during theVietnam War,where the results were dismal. TheAIM-4 Falcon,theUSAF's primary missile, scored hits only 9% of the time it was fired, while theUS Navy'sAIM-9 Sidewinderfared only slightly better, depending on the model. It became clear that there were two basic issues causing the problem. One was that the pilots were firing as soon as the missile saw the target in the seeker, any time it was in front of the launch aircraft. However, the seekers had a very limitedfield of viewso if the target aircraft was flying at right angles to the launcher, it would fly out of the seeker's view even as it left the launch rail. The other was that the missile would be fired at ranges where it could not reach the target, running out of speed and simply falling to the ground. The US addressed this through new training that helped pilots understand the limits of their missiles and fly their aircraft into positions that maximized the chance of a hit.

One attempt to improve matters was made starting in the late 1960s by theHawker Siddeley"Taildog", initially a private project but later officially supported asSRAAM.SRAAM's basic premise is that if pilots wanted to fire when the target was anywhere in front, then the missile should work in those situations. The result was a very short range but extremely maneuverable weapon that could turn rapidly enough to keep the target in view no matter the launch parameters. However, by 1974 the programme had been downgraded to a pure development project, and was later cancelled. The US started a similar project,AIM-95 Agile,to arm the new F-14 and F-15. This was similar to SRAAM in concept, but somewhat larger in order to offer range about the same or better than Sidewinder. Development was cancelled in 1975. Meanwhile, an entire different set of criteria led to theDornier Viper,whose design maximized range.[8]

The main reason these projects were cancelled was that a new version of the Sidewinder was introduced, the AIM-9L. A variety of changes gave the L slightly better manoeuvrability, speed and range, but the main change was a new seeker that had much higher tracking angles and all-aspect capabilities that allowed head-on engagements. Although not nearly as great a step forward as the other designs, the "Lima" offered a significant improvement in capability over the older models with very little additional cost. British pilots achieved an 80% kill ratio with the L model during theFalklands War,a number matched by the Israeli Air Force a few months later over theBekaa Valley.US experience with the Sidewinder since then has been mixed, with a percentage kill of just under 60% for the F-15, but almost zero for F-16s and F/A-18s, including a notable miss in 2017 when a 1970s-era Syrian Su-22 "Fitter" defeated a modern AIM-9X launched by a US Navy F/A-18.[9]

AMRAAM and ASRAAM

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In a series of tests in the mid-1970s, the USAF found that their existingAIM-7 Sparrowmissile had an effective range against fighter targets no better than the ostensibly much shorter-range Sidewinder. Because it was guided using the signals of the attacking aircraft'sradarreflecting off the target, the launching aircraft had to keep flying towards the target for its radar to continue illuminating it. During the time the missile was flying, the target aircraft was closing the distance and had the chance to launch IR missiles before being hit. This resulted in mutual kills, obviously undesirable.[citation needed]

The USAF looked at these results and concluded the solution was to design a new weapon to replace the Sparrow. The primary aims were to extend the range to keep the IR-guided missile firing fighters out of launching range, using a self-contained active seeker to allow the launching fighter to turn away, and, if possible, to reduce the weight enough to allow it to be carried on launchers designed only for the Sidewinder. The result was theAIM-120 AMRAAMproject, with the initial versions having a range of 50 to 75 km.

The AMRAAM also presented a new problem: between the Sidewinder's short range and AMRAAM's long range was a significant gap. AMRAAM was not really intended to be a snap-shot weapon like the Sidewinder, which remained desirable and the passive attack of a heatseeker can be an enormous advantage in combat. A new IR guided missile designed to act as a counterpart to AMRAAM would be a very different design than the AIM-9L, which had always been intended solely as a stop-gap.

In the 1980s,NATOcountries signed aMemorandum of Agreementthat the United States would develop the AMRAAM, while a primarily British and German team would develop a short-range air-to-air missile to replace the Sidewinder. The team included the UK (Hawker Siddeley, by this point known as BAe Dynamics) and Germany (Bodensee Gerätetechnik) sharing 42.5 per cent of the effort each, Canada at 10 per cent and Norway at 5 per cent. The US assigned this missile the name AIM-132 ASRAAM.[10]

New ASRAAM

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The rapid decline and eventual fall of theSoviet Unionin the late 1980s led to considerably less interest in the ASRAAM. By February 1988 the US was already agitating for changes. In July 1989 the Germans exited the programme effectively ending the agreement. Various reasons are often cited including the ending of the Cold War and full realisation of the capabilities of the RussianR-73 missile,but many commentators think this was a smokescreen for financial and defence industrial share issues.[11]

This left Britain in charge of the project and they began redefining it purely to RAF needs, sending out tenders for the new design in August 1989. This led to the selection of a new Hughesfocal plane arrayimaging array seeker instead of the more conventional design previously used, dramatically improving performance and countermeasure resistance. A UK contest in 1990 examined the new ASRAAM, the FrenchMICAand a new design from Bodensee Gerätetechnik, their version of the ASRAAM tuned for German needs. In 1992 the Ministry of Defence announced that ASRAAM had won the contest, and production began in March that year. The German design, by now part ofDiehl BGT Defence,became theIRIS-T.[10]

While ASRAAM was entering production, momentum behind US-led industrial and political lobbying grew significantly and, combined with the strengthening European economy, forced the US government to conclude testing in June 1996 and move away from the ASRAAM program.[12]

UK development and manufacture went ahead and the first ASRAAM was delivered to the Royal Air Force (RAF) in late 1998. It equips the RAF'sTyphoon.It was also used by the RAF'sHarrier GR7andTornado GR4forces until their retirement. In February 1998 ASRAAM was selected by the Royal Australian Air Force (RAAF) for use on theirF/A-18 Hornetsfollowing competitive evaluation of the improved ASRAAM, the RafaelPython 4and the AIM-9X.[10]In March 2009 the RAAF successfully carried out the first in-service "Lock on After Launch" firing of an ASRAAM at a target located behind the wing-line of the "shooter" aircraft.[13]

Characteristics

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ASRAAM is a high speed, extremely manoeuvrable, heat-seeking, air-to-air missile. Built by MBDA UK, it is designed as a "fire-and-forget" missile.[11]ASRAAM is intended to detect and launch against targets at much longer ranges, as far as early versions of the AMRAAM, in order to shoot down the enemy long before it closes enough to be able to fire its own weapons. In this respect the ASRAAM shares more in common with the AMRAAM than other IR missiles, although it retains high manoeuvrability. To provide the needed power, the ASRAAM is built on a 16.51 cm (6½ inch) diameter rocket motor compared with Sidewinder's (AIM-9M and X) and IRIS-T's 12.7 cm (5-inch) motors (which trace their history to the 1950s unguidedZuni rocket). This gives the ASRAAM significantly more thrust and therefore increased speed and range up to 50 kilometres (31 mi).[4]

The main improvement is a new 128×128 resolutionimaging infraredfocal plane array (FPA) seeker manufactured byHughesbefore they were acquired byRaytheon.This seeker has a long acquisition range, high countermeasures resistance, approximately 90-degree off-boresight lock-on capability, and the possibility to designate specific parts of the targeted aircraft (like cockpit, engines, etc.).[14]The ASRAAM also has a LOAL (Lock-On After Launch) ability which is a distinct advantage when the missile is carried in an internal bay such as in theF-35 Lightning II.The ASRAAM warhead is triggered either by laser proximity fuse or impact. A laser proximity fuse was selected because RF fuses are vulnerable to EW intervention from enemy jammers.[15]The increased diameter of ASRAAM also provides space for increased computing power, and so improved counter counter-measure capabilities compared with other dogfighting missiles such as AIM-9X.[citation needed]

Developments

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In 2014, India's defence ministry signed a £250m ($428m) contract with MBDA to equip itsSEPECAT/Hindustan Aeronautics Jaguarstrike aircraft with the company's ASRAAM short range air-to-air missile. MBDA's offering overcame competition from competitors including Rafael's Python-5 missile, emerging as the winner in 2012. This built on an existing 2012 order for 493MICAmissiles to replaceMatra S-530DandMagic IImissiles as part of an Indian Air ForceMirage 2000upgrade.[16]

In September 2015, the UK's MoD signed a £300 million contract for a new and improved version of the ASRAAM that would leverage new technological developments, including those from the CAMM missile. This variant would replace the current one when it goes out of service in 2022. A further £184 million contract was awarded in August 2016 to provide additional stocks of the new ASRAAM for the UK's F-35B. This new variant will be operationally ready on the Eurofighter Typhoon in 2018 and on the UK's F-35Bs from 2022 onwards.[5][17][18][needs update]

In February 2017, successful firing of ASRAAMs from F-35 Lightning IIs were conducted at Naval Air Station Patuxent River and Edwards Air Force Base in the USA. This represented the first time that a British-designed missile had been fired from an F-35 JSF and the first time any non-US missile had ever been fired from the aircraft.[19]

As of 31 January 2019 theIndian Air Forceis testing the compatibility of the ASRAAM weapons system with theSukhoiSu-30MKI,and aims to make the ASRAAM its standardised dogfighting missile across multiple aircraft types, including theTejas.Final testing and operational clearance are to be achieved by the end of 2019.[20]Bharat Dynamics Limitedwill produce the missile at itsBhanoorunit. The facility will also offer maintenance, repair & overhaul services.[21]

Variants

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ASRAAM P3I

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In 1995,HughesandBritish Aerospacecollaborated on the "P3I ASRAAM", a version of ASRAAM as a candidate for the AIM-9X program.[citation needed]The ultimate winner was the Hughes submission using the same seeker but with the rocket motor, fuse and warhead of the AIM-9M. The latter was a US Air Force stipulation to ease the logistics burden and save money by reusing as much as possible of the existing AIM-9 Sidewinder, of which 20,000 remained in the US inventory.[citation needed]

ASRAAM Block 6

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ASRAAM Block 6 standard, developed under the ASRAAM Sustainment programme, entered service on the Typhoon in April 2022,[22]and will enter F-35 service in 2024. The Block 6 introduces new and updated sub-systems, and replaces external cooling with a new internal cooler. The seeker has been replaced with a newUKbuilt seeker of higher resolution. There are no US-made components, meaning that it does not come underITARrestrictions and can therefore be exported without US approval.[23][24]

Common Anti-Air Modular Missile (CAMM)

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Main article:CAMM (missile family)

At theDSEiconference in September 2007 it was announced that the UK MoD was funding a study byMBDAto investigate a replacement for theRapierandSea Wolfmissiles for theRoyal NavyandBritish Armyrespectively. The Common Anti-Air Modular Missile (CAMM) would share components with ASRAAM, such as the very low signature rocket motor from Roxel and the warhead and proximity fuze from Thales but with updated electronics, an activeRF seekerand data link so allowing for mid-course corrections from suitably-equipped land or even air platforms.[25][26]CAMM began entering service in 2018 and has since be sold to nine other nations for both land and naval use. It has since become a family of weapons with a number of additional missile variants on order or in development.

Operational history

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Royal Air Force

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On 14 December 2021 a RAF Typhoon operating againstIslamic Statein southernSyriashot down a hostiledronewith an ASRAAM missile. This was the first time the British military had shot down an enemy aircraft since theFalklands War.[27]

Armed Forces of Ukraine (Surface-launched ASRAAM)

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In August 2023 it emerged that Ukraine had been provided an unknown number of improvised ground-based launch platforms for ASRAAM. developed in four months by a joint MBDA and MoD team, It has also been used byArmed Forces of Ukraineto provide short range air defence (SHORAD) against Russian aerial threats such as helicopters, cruise missiles and drones such as theHESA Shahed 136.Images of the system appear to show a twin-launcher mounted on the back of aSupacat6x6 vehicle (specifically the older Soothsayer ECM carriers) allowing it to remain mobile, whilst guidance can be provided by a Hawkeyeelectro-opticalsuite. The missile has a "fire and forget" capacity, compared to the already donatedStarstreakmissile that requires a line of sight to the target. Reportedly, the system has achieved a 90% success rate during operations. This system is not to be confused with the dedicated surface-launched development of ASRAAM, CAMM or the British Army'sSky Sabreair defence system.[28][29][30][31]On may 7th 2024 footage was published showing the first confirmed loss of a Ukrainian ASRAAM Supacat based launcher, it was destroyed by aZALA Lancet.[32][33]

Operators

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Map with current operators of ASRAAM in blue and former operators in red.

Current operators

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United Kingdom

Royal Air Force/Fleet Air Arm- Equips the Typhoon and F-35B Lightning in RAF andRoyal Navyservice.

India

Indian Air Force- on 8 July 2014 India signed a deal to procure 384 ASRAAMs from MBDA UK to replace the agingMatra Magic R550,to be integrated onto theSEPECAT Jaguarstrike aircraft.[34]

Ukraine

Armed Forces of Ukraine- In August 2023 a surface-launched version of ASRAAM was reported mounted on a Supacat HMT chassis in Ukraine.[28][29][30]

Future operators

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Qatar
Qatar Air Force
Oman
Royal Air Force of Oman

Former operators

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Australia

Royal Australian Air Force- Equipped theF/A-18A/B Hornet from 2004 until the aircraft's retirement in 2021. The RAAF uses theAIM-9Xwith the F/A-18F, EA-18G and F-35A.[35]

See also

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References

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Citations

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  1. ^abAsraam background(PDF),MBDA, archived from the original on 4 October 2013{{citation}}:CS1 maint: bot: original URL status unknown (link).
  2. ^"Asraam",RAF,MoD,archivedfrom the original on 19 February 2007,retrieved29 May2014.
  3. ^ab"ASRAAM".MBDS Systems.Archivedfrom the original on 10 April 2021.Retrieved17 March2021.
  4. ^ab"ASRAAM".Science & Technology(documentary). jaglavaksoldier.Archivedfrom the original on 18 June 2014.Retrieved10 July2009– via YouTube.
  5. ^ab"MOD signs £184 million contract to secure air-to-air missiles for the F-35B".Royal Navy. 16 August 2016.Archivedfrom the original on 20 August 2016.Retrieved16 August2016.
  6. ^ab"AIM-132 ASRAAM".FAS. Archived fromthe originalon 16 March 2011.Retrieved12 December2011.
  7. ^"Asraam",Typhoon,Star streak, archived fromthe originalon 23 April 2012.
  8. ^"Dornier Viper abandoned",Flight International:847, 27 June 1974,archivedfrom the original on 6 March 2016,retrieved15 September2015
  9. ^Mizokami, Kyle (26 June 2017)."How Did a 30-Year-Old Jet Dodge the Pentagon's Latest Missile?".Popular Mechanics.Archivedfrom the original on 12 August 2023.Retrieved27 September2018.
  10. ^abcKopp, Carlo (January 1998)."Matra-BAe AIM-132 ASRAAM: The RAAF's New WVR AAM".Air Power Australia.4(4).Archivedfrom the original on 6 August 2023.Retrieved12 December2011.
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  12. ^"Hughes wins AIM-9X".Flightglobal.1 January 1997.Archivedfrom the original on 5 September 2018.Retrieved5 September2018.
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  16. ^Chandra, Atul (10 July 2014)."MBDA signs Indian ASRAAM contract".Flightglobal.com.Archivedfrom the original on 5 September 2018.Retrieved5 September2018.
  17. ^"Britain Stockpiles New ASRAAM Missiles for the F-35".Defensenews.com. 16 August 2016.Retrieved17 August2016.[dead link]
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  22. ^Allison, George (2 May 2022)."ASRAAM Block 6 enters service on Typhoon".UK Defence Journal.Archivedfrom the original on 2 May 2022.Retrieved2 May2022.
  23. ^Allison, George (22 October 2021)."ASRAAM Block 6 to enter service on F-35 and Typhoon by 2024".UK Defence Journal.Archivedfrom the original on 24 October 2021.Retrieved24 October2021.
  24. ^"ASRAAM Block 6 enters service on Typhoon".2 May 2022.Archivedfrom the original on 2 May 2022.Retrieved2 May2022.
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  27. ^Beale, Jonathan (16 December 2021)."RAF Typhoon jet shoots down 'small hostile drone' in Syria".BBC News.Archivedfrom the original on 16 December 2021.
  28. ^abNewdick, Thomas; Rogoway, Tyler (4 August 2023)."Air-To-Air Missiles From UK Now Being Used By Ukraine As SAMs".The Drive.Archivedfrom the original on 4 August 2023.Retrieved5 August2023.
  29. ^ab"Advanced Short Range Air to Air Missile (ASRAAM) - Think Defence".www.thinkdefence.co.uk.5 November 2022.Retrieved5 January2024.
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  33. ^"Барражирующий боеприпас 'Ланцет' уничтожает пусковую установку AIM-132 ASRAAM на базе грузовика SupaCat ВСУ детонацией боекомплекта".
  34. ^Dhanjal, Swaraj Singh (8 July 2014)."India, UK sign deals worth 370 million".Live Mint.Archivedfrom the original on 9 July 2014.Retrieved8 July2014.
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