Engineering:H3 (rocket)

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Short description: Japanese expendable launch system
H3 Launch Vehicle
H3 rocket model in Kakamigahara Aerospace Science Museum November 8, 2019 02.jpg
A model of the H3 Launch Vehicle
FunctionMedium-lift launch vehicle
ManufacturerMitsubishi Heavy Industries
Country of originJapan
Cost per launchUS$50 million (H3-303S) [1]
Size
Height63 m (207 ft) [2]
Diameter5.27 m (17.3 ft) [2]
Mass574,000 kg (1,265,000 lb)
(Gross for H3-24L Variant) [3]
Stages2
Capacity
Payload to SSO4,000 kg (8,800 lb)
(H3-30S/L) [2]
Payload to GTO
(∆Ｖ=1500 m/s)		4,000–7,900 kg (8,800–17,400 lb)
(H3-24S/L) [2][4]
Launch history
StatusActive
Launch sitesTanegashima, LA-Y
Total launches1
Failures1
First flight7 March 2023
Notable payloadsALOS-3
Boosters
No. boosters0, 2 or 4
EnginesSRB-3
Thrust2,158 kN (485,000 lbf) [3]
Specific impulse283.6 s (2.781 km/s)
Burn time105 seconds
FuelSolid
First stage
Engines2 or 3 LE-9
Thrust2,942 or 4,413 kN (661,000 or 992,000 lbf) [3]
Specific impulse425 s (4.17 km/s)
FuelLH2 / LOX
Second stage
Engines1 LE-5B-3[3]
Thrust137 kN (31,000 lbf)
Specific impulse448 s (4.39 km/s)
FuelLH2 / LOX

The H3 Launch Vehicle is a Japanese expendable launch system. H3 launch vehicles are liquid-propellant rockets with strap-on solid rocket boosters and are launched from Tanegashima Space Center in Japan. Mitsubishi Heavy Industries (MHI) and JAXA are responsible for the design, manufacture, and operation of the H3. The H3 is the world's first rocket to use an expander bleed cycle for the first stage engine.[5]

(As of July 2015), the minimum configuration is to carry a payload of up to 4,000 kg (8,800 lb) into Sun-synchronous orbit (SSO) for about 5 billion yen, and the maximum configuration is to carry more than 6,500 kg (14,300 lb) into geostationary transfer orbit (GTO).[2] The H3-24 variant will deliver more than 6,000 kg (13,000 lb) of payload to lunar transfer orbit (TLI) and 8,800 kg (19,400 lb) of payload to geostationary transfer orbit (GTO)(∆Ｖ=1830 m/s).

Development

Mitsubishi Heavy Industries supervised the development and manufacture of the H3 rocket's airframe and liquid-fuel engines, while IHI Corporation developed and manufactured the liquid-fuel engine turbopumps and solid-fuel boosters, and Kawasaki Heavy Industries developed and manufactured the payload fairings.[6][7] The carbon fiber and synthetic resin used for the solid fuel booster motor case and payload fairing were developed and manufactured by Toray.[8]

The development of the H3 was authorized by the Japanese government on 17 May 2013.[9] The H3 Launch Vehicle is being jointly developed by JAXA and Mitsubishi Heavy Industries (MHI) to launch a wide variety of commercial satellites. The H3 was designed with cheaper engines compared to the H-IIA, so that manufacturing the new launch vehicle would be faster, less risky, and more cost-effective. JAXA and Mitsubishi Heavy Industries were in charge of preliminary design, the readiness of ground facilities, development of new technologies for the H3, and manufacturing. The main emphasis in design is cost reduction, with planned launch costs for customers in the range of around US$37 million.[10]

In 2015, the first H3 was planned to be launched in fiscal year 2020 in the H3-30 configuration (which lacks solid-rocket boosters), and in a later configuration with boosters in FY2021.[Note 1][2]

The newly developed LE-9 engine is the most important factor in achieving cost reduction, improved safety and increased thrust. The expander bleed cycle used in the LE-9 engine is a highly reliable combustion method that Japan has put into practical use for the LE-5A/B engine. However, it is physically difficult for an expander bleed cycle engine to generate large thrust, so the development of the LE-9 engine with a thrust of 1,471 kN (331,000 lbf) is the most challenging and important development element.[11]

Firing tests of the LE-9 first-stage engine began in April 2017,[12] with the first tests of the solid rocket boosters occurring in August 2018.[13]

On 21 January 2022, the launch of the first H3 was rescheduled to FY 2022 or later, citing technical problems regarding the first stage LE-9 engine.[14]

The first launch attempt on 17 February 2023 was aborted just before the SRB-3 boosters ignition, although the main engines were successfully ignited.[15][16][17]

On the second launch attempt for the H3 Launch Vehicle on 7 March the vehicle launched at 1:37:55 AM UTC (Universal Time Coordinated). Shortly after the SRB-3 boosters separated from the rocket around two minutes into the flight, the rocket appeared to lose control and begin to tumble based on the views from the ground camera; however, based on subsequent analysis, this appears to be part of a planned dogleg maneuver in order to achieve sun-synchronous orbit and not in fact a loss of control.[18] Approximately five minutes and twenty-seven seconds after launch, the second stage engine failed to ignite. After continuing to be unable to confirm second stage engine ignition, and with the velocity of the rocket continuing to fall, JAXA sent a self-destruct command to the rocket at around L+ 00:14:50 because there was "no possibility of achieving the mission". The payload onboard was the ALOS-3 satellite, which was also destroyed with the launch vehicle on the moment of self-destruct.[19][20][21][22][23][24][25][26][27]

Vehicle description

The H3 Launch Vehicle is a two-stage launch vehicle. The first stage uses liquid oxygen and liquid hydrogen as propellants and carries zero, two or four strap-on solid rocket boosters (SRBs) (derived from SRB-A) using polybutadiene fuel. The first stage is powered by two or three LE-9 engines which uses an expander bleed cycle design similar to the LE-5B engine.[28] The fuel and oxidizer mass of the first stage is 225 metric tons. The second stage is powered by a single engine which is an improved LE-5B. The propellant mass of the second stage is 23 metric tons.[3][29]

Variants

Each H3 booster configuration has a two-digit plus letter designation that indicates the features of that configuration. The first digit represents the number of LE-9 engines on the main stage, either "2" or "3". The second digit indicates the number of SRB-3 solid rocket boosters attached to the base of the rocket and can be "0", "2", or "4". All layouts of the solid boosters are symmetrical. The letter at the end shows the length of the payload fairing, either short, or "S", or long, or "L". For example, an H3-24L has two engines, four solid rocket boosters, and a long fairing, whereas an H3-30S has three engines, no solid rocket boosters, and a short fairing.[30] W-type fairing is similar to L-type except wider 5.4 m diameter. W-type was mentioned in the description of JAXA's web page, but not in the current description (As of November 2023).[31]

(As of November 2018), three configurations are planned: H3-30, H3-22, and H3-24.[30]

A previously mentioned variant, the H3-32, was cancelled in late 2018 when the performance of the H3-22 variant, sporting one less engine on the core booster, was found to be greater than anticipated, putting it close to the H3-32's performance. While the H3-32 would have provided greater performance, JAXA cited SpaceX's experience with their Falcon 9 rocket, which routinely lifted commercial communications satellite payloads to less than the gold standard geostationary transfer orbit (GTO) of 1,500 m/s (4,900 ft/s) of delta-V remaining to get to geostationary orbit, leaving the satellites themselves to make up the difference. As commercial clients were apparently willing to be flexible, JAXA proposed redefining their reference transfer orbit to something lower, believing commercial clients would prefer the less expensive (if slightly less capable) H3-22 rocket, even if the client had to then load additional propellant onto their satellite for it to reach GEO, than a more expensive H3-32.[30]

(As of October 2019), MHI is considering contributing two variants for the Gateway project: an extended second stage variant, and the H3 Heavy variant which would comprise three first-stage liquid-fuel boosters strapped together, similar to Delta IV Heavy and Falcon Heavy.[32] It would have a payload capacity of 28,300 kg (62,400 lb) to low Earth orbit.[33]

Launch services

H3 will have a "dual-launch capability, but MHI is focused more on dedicated launches" in order to prioritize schedule assurance for customers.[34]

As of 2018, MHI is aiming to price the H3 launch service on par with SpaceX's Falcon 9.[34]

Launch history

Sources: Japanese Cabinet[35]

The first launch attempt was on 17 February 2023. However, following a nominal countdown and LE-9 ignition, the launch was aborted before liftoff because “an anomaly was found in the first stage system and ignition signals for SRB-3s were not sent.” [36] JAXA also said that they would need to rollback the rocket to the VAB before attempting a second launch attempt before the end of March.[37]

The second launch attempt was on 7 March 2023. Ignition of center core plus two solid rocket boosters (SRBs) and lift-off appears to have been nominal. However, second stage ignition was not confirmed and a destruct command was subsequently sent, resulting in the payload not reaching orbit and an overall mission failure.[38]

Date and time (UTC) Flight Type Launch site Payload(s) Outcome
7 March 2023, 01:37:55[39] TF1 H3-22S[40] LP2, Tanegashima Japan ALOS-3 Failure
15 February 2024, 00:22:55[41] TF2 H3-22S LP2, Tanegashima Japan VEP-4 (Vehicle Evaluation Payload-4)
Japan CE-SAT-1E[42]
Japan TIRSAT[42]		 Planned
JFY2024 (TBD) F3 H3 LP2, Tanegashima Japan ALOS-4 Planned
JFY2024 (TBD) F4 H3 Japan DSN-3 Planned
JFY2024 (TBD) H3 Japan QZS-5 Planned
JFY2025 (TBD) H3-24W Japan HTV-X1 Planned
JFY2025 (TBD) H3 Japan QZS-6 Planned
JFY2025 (TBD) H3 Japan QZS-7 Planned
JFY2025 (TBD) H3 Japan ETS-IX Planned
JFY2026 (TBD) H3-24W Japan HTV-X2 Planned
2026 (TBD) H3-24L Japan MMX Planned
JFY2026 (TBD) H3-24W Japan HTV-X3 Planned
JFY2026 (TBD) H3 Japan IGS-Optical Diversification 1 Planned
2026–28 (TBD) H3 JapanIndia LUPEX Planned
JFY2027 (TBD) H3 Japan IGS-Optical 9 Planned
JFY2027 (TBD) H3 Japan IGS-Optical Diversification 2 Planned
2027 (TBD) H3 Japan JDRS-2 Planned
2027 (TBD) H3 Japan ALOS-3 Successor Planned
JFY2028 (TBD) H3 Japan Himawari 10 Planned
2028 (TBD) H3 Japan ALOS-4 Successor Planned
JFY2029 (TBD) H3 Japan IGS-Radar Diversification 1 Planned
JFY2029 (TBD) H3 Japan IGS-Optical 10 Planned
JFY2030 (TBD) H3 Japan IGS-Radar Diversification 2 Planned
JFY2031 (TBD) H3 Japan IGS-Radar 9 Planned
JFY2032 (TBD) H3 Japan IGS-Optical Diversification Successor Planned
JFY2032 (TBD) H3 Japan LiteBIRD Planned
JFY2033 (TBD) H3 Japan IGS-Radar 10 Planned
JFY2033 (TBD) H3 Japan IGS-Optical 11 Planned
(TBD) H3 United Kingdom Inmarsat (satellite TBD)[43] Planned[44]

Notes

  1. ↑ A Japanese Fiscal Year starts in April of the year and ends in March of the next year. For this case, it denotes launch will occur no earlier than 1 April 2021, and no later than 31 March 2022.

References

  1. ↑ Clark, Stephen (19 September 2017). "Japan's MHI wins deal to launch satellite for Inmarsat". Spaceflight Now. https://spaceflightnow.com/2017/09/19/japans-mhi-wins-deal-to-launch-satellite-for-inmarsat/. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 "Error: no |title= specified when using {{Cite web}}" (in ja). July 2, 2015. http://www.jaxa.jp/press/2015/07/files/20150702_rocket_j.pdf. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 "H3 Launch Vehicle Brochure". http://global.jaxa.jp/activity/pr/brochure/files/rocket09.pdf. 
  4. ↑ "Space News". https://spacenews.com/mitsubishi-heavy-industries-mulls-upgraded-h3-rocket-variants-for-lunar-missions/. 
  5. ↑ Shinya Matsuura (February 2, 2021). "Error: no |title= specified when using {{Cite web}}" (in ja). Nikkei Business. https://xtech.nikkei.com/atcl/nxt/column/18/01540/00008/. 
  6. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). JAXA. 8 July 2015. p. 30. https://fanfun.jaxa.jp/jaxatv/files/jaxatv_20150708_h3.pdf. 
  7. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). Mynavi News. 25 January 2021. https://news.mynavi.jp/techplus/article/20210125-1671763/. 
  8. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). Weeklly Gomutimes. 14 February 2023. https://www.gomutimes.co.jp/?p=180548. 
  9. ↑ "JAXA H3 booster". China Post. 19 May 2013. https://www.chinapost.com.tw/asia/japan/2013/05/19/378945/Japan-may.htm. 
  10. ↑ "Japan's new rocket fails after engine issue, in blow to space ambitions" (in en-US). 2023-03-07. https://www.japantimes.co.jp/news/2023/03/07/national/science-health/h3-rocket-fails/. 
  11. ↑ Shinya Torishima (24 September 2020). "H3ロケット開発を襲った"魔物"とは？、エンジンに見つかった技術的課題" (in ja). Mynavi news. https://news.mynavi.jp/article/20200924-1332582/. 
  12. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). JAXA. http://www.rocket.jaxa.jp/engine/le9/firingtest.html. 
  13. ↑ "Test-firing of booster for H3 rocket". NHK World. 27 August 2018. https://www3.nhk.or.jp/nhkworld/en/news/20180827_11/. 
  14. ↑ "H3ロケットの試験機1号機の打上げについて" (in ja). JAXA. January 21, 2022. https://www.jaxa.jp/press/2022/01/20220121-1_j.html. 
  15. ↑ "Japan's new rocket fails to blast off". AFP. https://www.koreatimes.co.kr/www/world/2023/02/501_345629.html. 
  16. ↑ "Japan's new H3 rocket aborts 1st-ever launch attempt" (in en). 2023-02-17. https://www.space.com/japan-h3-rocket-first-launch-attempt-abort. 
  17. ↑ Clark, Stephen. "First launch of Japan's H3 rocket aborted moments before liftoff – Spaceflight Now" (in en-US). https://spaceflightnow.com/2023/02/17/first-launch-of-japans-h3-rocket-aborted-moments-before-liftoff/. 
  18. ↑ "Shiny New Rockets, Old Failed Rockets - Deep Space Updates March 7th". https://www.youtube.com/watch?v=5AVKP12YE0E. 
  19. ↑ S, Joseph (2023-03-07). "BREAKING! Japan's H3 Rocket Fails During Inaugural Launch - TLP News". https://tlpnetwork.com/news/2023/03/h3-maiden-flight-anomaly. 
  20. ↑ "Japan launches H3 rocket, destroys it over 2nd stage failure". https://abcnews.go.com/International/wireStory/japan-launches-h3-rocket-destroys-2nd-stage-failure-97672795. 
  21. ↑ "Japan launches H3 rocket, destroys it over 2nd stage failure". https://news.yahoo.com/japan-launches-h3-rocket-destroys-043848201.html. 
  22. ↑ National, The (2023-03-07). "Japan destroys new H3 rocket after lift-off as second-stage engine fails". https://www.thenationalnews.com/world/asia/2023/03/07/japan-h3-rocket-launch-failure/. 
  23. ↑ Andrew Jones published (2023-03-07). "Japan's new H3 rocket fails on 1st test flight, advanced Earth observation satellite lost". https://www.space.com/japan-h3-rocket-fails-1st-test-flight. 
  24. ↑ YAMAGUCHI, MARI (2023-03-07). "Japan launches H3 rocket, destroys it over 2nd stage failure". https://www.timesunion.com/news/politics/article/japan-launches-h3-rocket-destroys-it-over-2nd-17823843.php. 
  25. ↑ "Japanese rocket and disaster-management satellite destroyed in space after engine failure" (in en-AU). ABC News. 2023-03-07. https://www.abc.net.au/news/2023-03-07/japan-blows-up-rocket-after-engine-failure-in-space/102065166. 
  26. ↑ "Hopes crushed as next-gen rocket explodes". The Cairns Post. 2023-03-07. https://www.news.com.au/technology/science/space/japans-new-h3-rocket-fails-again-forced-to-selfdestruct/news-story/fdf1568c4084557cfc84f17eb112a25b. 
  27. ↑ "Japan Launches H3 Rocket, Destroys It Over 2nd-Stage Failure" (in en-US). https://thediplomat.com/2023/03/japan-launches-h3-rocket-destroys-it-over-2nd-stage-failure/. 
  28. ↑ "Development of the LE-X Engine". Mitsubishi Heavy Industries Technical Review 48 (4). December 2011. http://www.mhi.co.jp/technology/review/pdf/e484/e484036.pdf. Retrieved 8 July 2015. 
  29. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). JAXA. July 8, 2015. http://fanfun.jaxa.jp/jaxatv/files/jaxatv_20150708_h3.pdf. 
  30. ↑ 30.0 30.1 30.2 "Error: no |title= specified when using {{Cite web}}" (in ja). JAXA. 29 November 2018. http://www.jaxa.jp/press/2018/11/files/20181129_h3.pdf. 
  31. ↑ "Error: no |title= specified when using {{Cite web}}" (in Japanese). JAXA. https://www.rocket.jaxa.jp/rocket/h3/faring.html. 
  32. ↑ Space News
  33. ↑ Henry, Caleb (25 October 2019). "Mitsubishi Heavy Industries mulls upgraded H3 rocket variants for lunar missions". SpaceNews. https://spacenews.com/mitsubishi-heavy-industries-mulls-upgraded-h3-rocket-variants-for-lunar-missions/. 
  34. ↑ 34.0 34.1 Henry, Caleb (12 July 2018). "Blue Origin to offer dual launch with New Glenn after fifth mission". SpaceNews. https://spacenews.com/blue-origin-to-offer-dual-launch-with-new-glenn-after-fifth-mission/. "H3 is on track for a 2020 debut with a price meant to be on par with SpaceX's Falcon 9." 
  35. ↑ "宇宙基本計画⼯程表 (令和５年度改訂)" (in ja). Cabinet Office. 22 December 2023. p. 45. https://www8.cao.go.jp/space/plan/plan2/kaitei_fy05/kaitei_fy0512.pdf. 
  36. ↑ "JAXA | Cancellation of Today's Launch of the First H3 Launch Vehicle Carrying Advanced Land Observing Satellite-3 "DAICHI-3" (ALOS-3)" (in en). https://global.jaxa.jp/press/2023/02/20230217-1_e.html. 
  37. ↑ "「H3」打ち上げ中止 何が起こった?今後は? JAXA開発責任者会見". NHK. February 17, 2023. https://www3.nhk.or.jp/news/html/20230217/k10013984031000.html. 
  38. ↑ "BREAKING! Japan 1st H3 Rocket Launch Failure". The Launch Pad Youtube Channel. March 7, 2023. https://www.youtube.com/watch?v=R25fRZ26-dM. 
  39. ↑ "H3ロケット試験機1号機による先進光学衛星「だいち3号」（ALOS-3）の打上げについて[再設定(その5)"]. JAXA. March 4, 2023. https://www.jaxa.jp/press/2023/03/20230304-1_j.html. 
  40. ↑ "Error: no |title= specified when using {{Cite web}}" (in ja). 宇宙開発利用部会. 10 December 2019. http://www.mext.go.jp/kaigisiryo/2019/12/__icsFiles/afieldfile/2019/12/09/1423011_4.pdf. 
  41. ↑ "JAXA 主力ロケット「H3」2号機 2024年2月15日に打ち上げへ" (in japanese). NHK. 27 December 2023. https://www3.nhk.or.jp/news/html/20231227/k10014301921000.html. 
  42. ↑ 42.0 42.1 "「Ｈ３」２号機、衛星搭載せず　リスク回避、早期打ち上げ目指す―文科省" (in Japanese). Yahoo! Japan. June 27, 2023. https://news.yahoo.co.jp/byline/akiyamaayano/20230627-00355449. Retrieved 2023-06-28. 
  43. ↑ Henry, Caleb (6 December 2018). "Inmarsat books Japanese H3 rocket's first commercial launch". SpaceNews. https://spacenews.com/inmarsat-books-japanese-h3-rockets-first-commercial-launch/. 
  44. ↑ "Inmarsat to be first commercial customer for the new H3 launch vehicle provided by MHI". INMARSAT. 6 December 2018. https://www.inmarsat.com/en/news/latest-news/corporate/2018/inmarsat-to-be-first-commercial-customer-for-the-new-h3-launch-vehicle-provided-by-mhi.html. 

External links



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