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Firefly Alpha

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Firefly Alpha
Firefly Alpha lifting off the pad at Vandenberg Space Force Base on September 2, 2021
ManufacturerFirefly Aerospace
Country of originUnited States
Cost per launchUS$15 million - US$17.6 million[1]
Size
Height29 m (95 ft)
Diameter1.82 m (6 ft 0 in)
Mass54,000 kg (119,000 lb)
Stages2
Capacity
Payload tolow Earth orbit
Mass1,030 kg (2,270 lb)[2]
Payload toSun-synchronous orbit(500km)
Mass630 kg (1,390 lb)
Launch history
StatusActive
Launch sitesVSFBSLC-2W(Active)[3][4]
Wallops,LP-0A(Planned)[5]
CCSFSSLC-20(Planned)[6]
ESRANGELC-3C (Planned)[7]
Total launches5
Success(es)2
Failure(s)1
Partial failure(s)2
First flight3 September 2021;2 years ago(3 September 2021)[8]
Last flight4 July 2024
First stage
Diameter1.82 m (6 ft 0 in)
Powered by4 ×Reaver
Maximum thrust736.1 kN (165,500 lbf)
Specific impulse295.6 s (2.899 km/s)
PropellantRP-1/LOX
Second stage
Diameter1.82 m (6 ft 0 in)
Powered by1 ×Lightning
Maximum thrust70.1 kN (15,800 lbf)
Specific impulse322.0 s (3.158 km/s)
PropellantRP-1/LOX
[edit on Wikidata]

Firefly Alpha(Firefly α) is atwo-stageorbitalexpendablesmall lift launch vehicledeveloped by the American companyFirefly Aerospacetocompetein the commercialsmall satellitelaunch market. Alpha is intended to provide launch options for both full vehicle andridesharecustomers.[9]

The first launch attempt was on 3 September 2021 but the vehicle did not reach orbit when one of thefirst stageenginesfailed during ascent.[10]A second orbital test flight took place on 1 October 2022 and successfully reached orbit.[11]Alpha deployed 7 satellites, however, due to the lower than intended deployment orbit, most of the satellites re-entered before reaching their intended design life a week after launch.[12][13][14][15]The first fully successful launch of Alpha took place on 15 September 2023.

History[edit]

The initial 2014-vintage design of Alpha wastwo-stage-to-orbitvehicle with the first stage powered by an FRE-2methaloxengine, which consisted of twelve nozzles arranged in anaerospikeconfiguration.[16]The engine usedmethaneandliquid oxygenaspropellants,and completed a full-duration combustor test in September 2016.[17]The second stage was to be propelled by the FRE-1 engine[clarification needed],which was to use a conventionalbell nozzle.This version of Alpha was intended to carry 400 kg to low Earth orbit.[18][19]

In 2015, NASA'sLaunch Services Programawarded Firefly Space Systems, the predecessor to Firefly Aerospace, a US$5.5 millionVenture Class Launch Servicescontract to incentivize the development of Alpha, as part of a program to enable easier space access for the small satellite market.[20][21][clarification needed]

After the March 2017 bankruptcy ofFirefly Space Systems[22]and corporate reorganization to become Firefly Aerospace with new owners andcapital,[6]the Alpha launch vehicle was redesigned to a much larger rocket, over twice as much capacity as the Alpha design of 2014. The version 2 Alpha vehicle still utilizes two stages to orbit, but now both are 1.8 m (5 ft 11 in) in diameter and useRP-1/LOXpropellants.[2]The main body of the rocket is constructed using a lightweightcarbon compositematerial.[4]

In March 2018, Firefly said that thedevelopmentof Alpha was expected to cost approximately US$100 million.[23]

Firefly Aerospace planned[when?]to use a Horizontal Integration Facility (HIF) to integrate payloads.[4]

The first test launch and Maiden flight of Firefly Alpha occurred on 3 September 2021 at 01:59UTC,[8][24]from a leased pad atVandenberg Space Force Basein California, and was to fly southwest over the Pacific Ocean.[25]Due to an engine failure caused by a sensor cable disconnect approximately 15 seconds after the launch, the rocket lost control attransonic speedsapproximately two and a half minutes after launch that resulted in manual activation of theflight termination systemand loss of the vehicle.[10][26][27] The launch vehicle had onboard various payloads as part of Firefly's DREAM mission[28]—including Benchmark Space BSS1, Firefly Capsule 1, and PICOBUS[29](intending to deploy sixPocketQubes), Hiapo, Spinnaker3, and TIS Serenity[30][31]—which were destroyed. Firefly's experimental Space Utility Vehicle (SUV) third stage was also onboard this flight.

Design[edit]

The Alphafirst stageis powered by fourReaver 1LOX/RP-1tap-off cycleengines,[32]delivering 736 kN (165,000 lbf) of thrust. The second stage is powered by oneLightning 1LOX / RP-1 engine, delivering 70.1 kN (15,800 lbf) of thrust with aspecific impulse(Isp) of 322 seconds.[2]Lightning 1 was test-run for nearly 5 minutes on 15 March 2018 during a long duration test fire on Firefly's Test Stand 1 inBriggs, Texas.[23][33]

The Alpha airframe uses allcarbon-fibercompositematerial in its construction. Using carbon-fiber makes the rocket more fuel efficient because the use of denser materials like titanium and aluminum would result in a heavier airframe, which would require more fuel to launch.[23]

Intended usage[edit]

Alpha is designed to launch up to 1170 kg of payload to a 200 kmlow Earth orbit,or up to 745 kg payload to a 500 kmSun-synchronous orbit,suitable forCubeSatsand othersmall payloads.[2]Primary payloads can be integrated by themselves or with asecondary payload,with vehicle capacity for up to 6 CubeSats.[9][4]This allows Firefly's customers to have a dedicated small-satellite launcher, reducing the issues of ridesharing payloads and secondary payloads. These smaller satellites can have an orbit that is not determined by a larger payload and can launch on their own schedule instead of waiting on the readiness of all other payloads.[citation needed]

Alpha is also intended to be a direct American competitor in the small satellite market to India'sPolar Satellite Launch Vehicle(PSLV), as the company believes that PSLV's ride-share capability threatens U.S. domestic launchers in this market.[34]

Launch sites[edit]

Firefly Aerospace is leasingVandenbergpadSLC-2Wto support Firefly Alpha andMLVlaunches; this launch pad formerly supportedDelta,Thor-Agena,andDelta IIlaunch vehicles launches.[3]Additionally, Firefly plans to refurbish and utilize[when?]Cape CanaveralSLC-20for low-inclination launches of Alpha in the future.[6]


Launch history[edit]

Date and time,UTC Launch site Payload Orbit Customer Launch
outcome
3 September 2021
01:59[26] 		Vandenberg SLC-2W Various RetrogradeLEO Failure
Maiden flight of the Firefly Alpha; carrying various payloads as part of their DREAM mission.[28]Due to an engine failure approximately 15 seconds after the launch, the rocket lost control attransonic speedapproximately two and a half minutes after launch that resulted in the activation of theflight termination systemand loss of the vehicle.[35]
1 October 2022
07:01[15] 		Vandenberg SLC-2W TechEdSat-15(TES-15), TIS Serenity, PicoBus (deploying fivePocketQubes) target:RetrogradeLEO(300 km circular, 137° inclination)
actual:RetrogradeLEO(219 km x 279 km, 136.9° inclination)[36] 		NASA Ames,SJSU,Teachers in Space, Inc.,Libre Space Foundation,Fossa Systems,AMSAT-EA Partial failure
"To The Black". First partially successful orbital launch, carrying educational payloads, including a hosted payload, Firefly Capsule 2. Alpha deployed 7 satellites, however, due to the lower than intended final deployment orbit, most of the satellites re-entered approximately a week after launch.
15 September 2023
02:28[37] 		Vandenberg SLC-2W Victus Nox
SSO
 Space Systems Command Success
Tactically Responsive Space-3 (TacRS-3) mission to display rapid response launch capabilities — the payload was integrated and launched 27 hours after launch order were received from the customer. First fully successful launch of Alpha. Second stage performed a re-ignition for a controlled deorbit.[38]
22 December 2023
17:32[39] 		Vandenberg SLC-2W Tantrum (Electronically Steerable AntennaDemo)
LEO
 Lockheed Martin Partial failure
"Fly the Lightning". Dedicated commercial launch, carrying a technology demonstrator payload forLockheed Martinintegrated on aTerran OrbitalNebula satellite bus. Stage 2 engine relight did not deliver the payload to its planned target orbit. Communications to the spacecraft were established and some mission operations took place. The satellite decayed on 10 February 2024 ~15:00.[40]
4 July 2024
04:04[41][42] 		Vandenberg SLC-2W VCLS Demo-2FB
SSO
 NASA Success
"Noise of Summer". NASA Venture Class Launch Services 2 (VCLS 2) Mission Two, officially known as VCLS Demo-2FB. TheELaNa43 mission, consisting of eight CubeSats, will launch on this flight.[43][44]
15 October 2024[45][46] Vandenberg SLC-2W Elytra
LEO
 NRO/Firefly Aerospace/Xtenti
NRO Responsive Space Mission, carrying Firefly's Elytraorbital transfer vehicleand Xtenti's FANTM-RiDE payload dispenser.
2024[47][48] Vandenberg SLC-2W Dedicated rideshare mission
LEO
 Spaceflight, Inc.
Dedicatedsmallsatrideshare mission to low Earth orbit utilizing Firefly's Elytra Dawn orbital tug.
2024[47][49] Vandenberg SLC-2W Satlantis EO Constellation
LEO
 Satlantis
Satlantisearth observation satelliteconstellation.
2024[50][51] Vandenberg SLC-2W EOS SAR 1
SSO
 EOS Data Analytics
First EOSsynthetic-aperture radar(SAR) constellation satellite.
2024[52] Vandenberg SLC-2W
LEO
 Lockheed Martin
First of 15 launches contracted with Lockheed Martin through 2029 with options for 10 more launches.
2026[53] Vandenberg SLC-2W
LEO
 L3Harris
First of three dedicated launches for L3Harris.
2026[53] Vandenberg SLC-2W
LEO
 L3Harris
Second of three dedicated launches for L3Harris.
2026[53] Vandenberg SLC-2W
LEO
 L3Harris
Third of three dedicated launches for L3Harris.

See also[edit]

References[edit]

  1. ^"U.S. SPACE FORCE SELECTS FIREFLY AEROSPACE FOR 'RAPID SPACE' VICTUS NOX MISSION".Firefly Aerospace. 5 October 2022. Archived fromthe originalon 5 October 2022.Retrieved5 October2022.
  2. ^abcd"Alpha: Economical Small Satellite Launch".firefly.1 October 2022.Archivedfrom the original on 22 September 2022.Retrieved1 October2022.
  3. ^abClark, Stephen (2 May 2018)."Firefly's commercial satellite launcher to use Delta 2 pad at Vandenberg".Spaceflight Now.Archivedfrom the original on 26 November 2021.Retrieved3 May2018.
  4. ^abcd"Firefly Alpha Payload User's Guide"(PDF).Archived fromthe original(PDF)on 28 September 2019.Retrieved18 November2019.
  5. ^"Firefly Aerospace Adds Alpha Launch Capability on Wallops Island, Virginia".Firefly Aerospace.24 June 2024.Retrieved24 June2024.
  6. ^abcGrush, Loren (22 February 2019)."Resurrected Firefly Aerospace will take over a launch site at busy Florida spaceport".The Verge.Archivedfrom the original on 26 November 2021.Retrieved1 October2022.
  7. ^"Firefly to launch Alpha rockets from Esrange in Sweden".
  8. ^abKordina, Florian (27 August 2021)."FLTA001 DREAM | Alpha".Everyday Astronaut.Archivedfrom the original on 24 January 2022.Retrieved28 August2021.
  9. ^ab"Firefly Alpha".Archivedfrom the original on 22 September 2022.Retrieved1 October2022.
  10. ^ab"Firefly's Alpha rocket explodes on inaugural test launch".Spaceflight Now.3 September 2021.Archivedfrom the original on 21 February 2022.Retrieved3 September2021.
  11. ^"Watch Firefly's Second Orbital Launch Attempt Of Their Alpha Rocket!".Everyday Astronaut. October 2022.Archivedfrom the original on 1 October 2022.Retrieved1 October2022– via YouTube.
  12. ^"CelesTrak: International Designator 2022-122".Celestrak.Retrieved7 October2022.
  13. ^"Reception of raw telemetry from PocketCubes QUBIK 3&4".3 October 2022.Retrieved7 October2022.
  14. ^"FOSSASat-1B seems to be alive and well".1 October 2022.Retrieved7 October2022.
  15. ^abFoust, Jeff (10 October 2022)."Firefly says Alpha launch a success despite payload reentries".SpaceNews.Retrieved10 October2022.
  16. ^Szondy, David (13 July 2014)."Firefly Space Systems unveils Alpha launch vehicle design with aerospike engine".New Atlas.Archivedfrom the original on 31 July 2020.Retrieved26 August2020.
  17. ^Henry, Caleb (29 September 2016)."Firefly Alpha Rocket Combustor Completes Full Mission Duty Cycle Test".Satellite Today.Archivedfrom the original on 18 August 2020.Retrieved26 August2020.
  18. ^Werner, Debra (23 November 2015)."Firefly Aims To Build the 'Model T of Rockets'".SpaceNews.Archivedfrom the original on 2 October 2022.Retrieved26 August2020.
  19. ^Krebs, Gunter."Firefly".Gunter's Space Web.Archivedfrom the original on 6 November 2018.Retrieved5 November2018.
  20. ^Wistrom, Brent (14 October 2015)."This Cedar Park Rocket Company Just Nabbed a US$5.5 Million NASA Contract".AustinInno.Archivedfrom the original on 1 April 2018.Retrieved31 March2018.
  21. ^"NASA Awards Venture Class Launch Services Contracts for CubeSat Satellites".NASA. 14 October 2015.Archivedfrom the original on 21 January 2018.Retrieved31 March2018.Public DomainThis article incorporates text from this source, which is in thepublic domain.
  22. ^"Firefly Space Systems assets to be sold".SpaceNews.15 March 2017.Archivedfrom the original on 9 May 2022.Retrieved15 March2017.
  23. ^abcRichardson, Derek (17 March 2018)."Firefly Aerospace demos its Lightning 1 engine".Spaceflight Insider.Archivedfrom the original on 23 May 2018.Retrieved4 April2018.
  24. ^Foust, Jeff (24 August 2021)."Firefly Aerospace's Alpha rocket ready for first launch".SpaceNews.Archivedfrom the original on 2 October 2022.Retrieved28 August2021.
  25. ^Neal, Mihir (2 September 2021)."Firefly Aerospace's maiden flight of Alpha launch vehicle ends in failure".NASASpaceFlight.Archivedfrom the original on 3 September 2021.Retrieved3 September2021.
  26. ^abFoust, Jeff (2 September 2021)."Firefly Alpha explodes during first launch".SpaceNews.Archivedfrom the original on 28 December 2021.Retrieved3 September2021.
  27. ^"FIREFLY ALPHA TERMINATED MID-FLIGHT".Vandenberg Space Force Base.Retrieved5 October2022.[permanent dead link]
  28. ^abBerger, Eric (17 June 2019)."Firefly opens first Alpha rocket launch to academic and educational payloads".Ars Technica.Archivedfrom the original on 31 July 2020.Retrieved26 August2020.
  29. ^"PICOBUS".Libre Space Foundation.Archivedfrom the original on 24 July 2021.Retrieved20 August2021.
  30. ^"Firefly Alpha First Launch Payloads"(PDF).noaa.gov.NOAA—National Environmental Satellite Data and Information Service. 3 January 2020. Archived fromthe original(PDF)on 27 June 2021.Retrieved9 September2020.
  31. ^"TIS Serenity Publicly-Releasable Summary of Licensed System"(PDF).Teachers in Space, Inc.NOAA. 19 March 2020. Archived fromthe original(PDF)on 9 November 2020.Retrieved9 September2020.Public DomainThis article incorporates text from this source, which is in thepublic domain.
  32. ^Firefly Alpha-FLT001 livecastArchived2 October 2022 at theWayback Machine,Everyday Astronaut, 2 September 2021.
  33. ^Nojas, Charmagne (18 March 2018)."Firefly Aerospace Makes A Comeback With Lightning 1 Engine Demo in Texas".TechTimes.Archivedfrom the original on 5 April 2018.Retrieved4 April2018.
  34. ^Foust, Jeff (21 August 2017)."Small rockets, new and renewed".The Space Review.Archivedfrom the original on 6 August 2020.Retrieved26 August2020.
  35. ^Foust, Jeff (6 September 2021)."Firefly Alpha failure blamed on premature engine shutdown".SpaceNews.Retrieved18 November2023.
  36. ^Jonathan McDowell [@planet4589] (1 October 2022)."The second @Firefly_Space Alpha was launched from Space Launch Complex 2-West at Vandenberg Space Force Base at 0701 UTC. So far one object has been tracked in a 219 x 279 km x 136.9 deg low Earth orbit"(Tweet).Retrieved7 October2022– viaTwitter.
  37. ^Gray, Tyler (15 September 2023)."Firefly's Alpha successfully launches VICTUS NOX rapid response mission".NASASpaceFlight.Retrieved15 September2023.
  38. ^Schnautz, Risa (14 September 2023)."Firefly Aerospace Successfully Launches U.S. Space Force VICTUS NOX Responsive Space Mission with 24-Hour Notice".Firefly Aerospace.Retrieved15 September2023.
  39. ^Gray, Tyler (22 December 2023)."Firefly suffers second stage anomaly on" Fly the Lightning "mission".NASASpaceFlight.Retrieved23 December2023.
  40. ^Jonathan McDowell [@planet4589] (11 February 2024)."Tantrum reported to have reentered sometime between 1426 and 1518 UTC Feb 10. That almost 1 hr uncertainty corresponds to a track from Brazil to S Africa to NW Australia to Papua to Wake Island"(Tweet) – viaTwitter.
  41. ^"Firefly Alpha - VCLS Demo-2FB (ELaNa 43)".Next Spaceflight.29 February 2024.Retrieved1 July2024.
  42. ^Schnautz, Risa (22 June 2024)."Firefly Aerospace Ready to Launch Alpha FLTA005 for NASA No Earlier Than June 26".Firefly Aerospace.Retrieved22 June2024.
  43. ^Higginbotham, Scott (9 August 2021)."CubeSat Launch Initiative – Upcoming Flights"(PDF).NASA.p. 3.Archived(PDF)from the original on 22 September 2021.Retrieved22 September2021.
  44. ^Foust, Jeff (12 December 2020)."Three companies win NASA small launch contracts".SpaceNews.Archivedfrom the original on 23 August 2021.Retrieved4 May2021.
  45. ^"Firefly Aerospace, Inc. Elytra-1 Application".Firefly Aerospace.29 April 2024.Retrieved4 May2024.
  46. ^Werner, Debra (8 August 2023)."NRO to conduct responsive space mission with Firefly and Xtenti".SpaceNews.Retrieved17 September2023.
  47. ^abFoust, Jeff (17 July 2022)."Firefly gears up for second Alpha launch".SpaceNews.Archivedfrom the original on 2 October 2022.Retrieved18 July2022.
  48. ^Baylor, Michael."Firefly Alpha - Spaceflight Industries Rideshare".Next Spaceflight.Archivedfrom the original on 25 May 2022.Retrieved25 May2022.
  49. ^Etherington, Darrell (4 February 2020)."Rocket startup Firefly signs satellite constellation launch mission with Satlantis".TechCrunch.Archivedfrom the original on 5 February 2021.Retrieved4 February2021.
  50. ^"SAR Technology – EOSSAR".EOS Data Analytics.21 November 2019.Archivedfrom the original on 14 August 2022.Retrieved17 December2022.
  51. ^Werner, Debra (22 October 2019)."Noosphere Venture campaign begins coming together with radar constellation".SpaceNews.Archivedfrom the original on 2 October 2022.Retrieved4 February2021.
  52. ^"Firefly Aerospace Announces Multi-Launch Agreement with Lockheed Martin for 25 Alpha Launches".Firefly Aerospace(Press release). 5 June 2023.Retrieved5 June2024.
  53. ^abc"Firefly Aerospace Awarded Multi-Launch Agreement with L3Harris".Firefly Aerospace(Press release). 5 September 2023.Retrieved6 September2023.
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