HTV 1 [NASA]
The HTV (H-2 Transfer Vehicle) or Kounotori is an uncrewed, non-reusable cargo spacecraft for delivering pressurized and unpressurized cargo to the International Space Station. Launched by an H-2B-304 rocket, it maneuvers to the vicinity of the ISS, where the Canadarm-2 grapples the HTV and berths it to Node-2.
The HTV consists of four main components:
Electrical power is provided by body mounted solar cells.
HTV has a cargo capacity for supplies and equipment of max. 6,000 kg in total. The pressurized cargo can be max. 5,200 kg and the unpressurized cargo max. 1,500 kg. It can deorbit 6,000 kg of waste.
The maximum duration of a mission solo flight is approx. 100 hours. It can stay on stand-by on orbit for more than a week. The berthed time with the ISS is up to 30 days.
At the end of the mission, the HTV is unberthed from the ISS by the Canadarm-2 and it is deorbited to a destructive reentry.
HTV-6 carried the EDT tether experiment to be conducted after departing from the ISS. It failed to deploy.
Nation: | Japan |
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Type / Application: | Supply |
Operator: | JAXA (ex NASDA) |
Contractors: | Mitsubishi Electric (MELCO) |
Equipment: | |
Configuration: | |
Propulsion: | 4 × R-4D-11 (#1, 2, 4) or 4 × IHI HBT-5 (#3, 5-7) |
Power: | Solar cells (body mounted), batteries |
Lifetime: | 30 days |
Mass: | 16500 kg |
Orbit: | 400 km × 400 km, 51.6° (typical) |
Satellite | COSPAR | Date | LS | Launch Vehicle | Remarks | |
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HTV 1 | 2009-048A | 10.09.2009 | Ta YLP-2 | H-2B-304 | with HREP, SMILES | |
HTV 2 (Kounotori 2) | 2011-003A | 22.01.2011 | Ta YLP-2 | H-2B-304 | ||
HTV 3 (Kounotori 3) | 2012-038A | 21.07.2012 | Ta YLP-2 | H-2B-304 | with SCaN-Testbed, MCE, Raiko, WE WISH, FITSat 1, F 1, TechEdSat 1 | |
HTV 4 (Kounotori 4) | 2013-040A | 03.08.2013 | Ta YLP-2 | H-2B-304 | with STP-H4, TechEdSat 3, ArduSat X, ArduSat 1, PicoDragon | |
HTV 5 (Kounotori 5) | 2015-038A | 19.08.2015 | Ta YLP-2 | H-2B-304 | with CALET, Flock-2b 1, ..., 14, SERPENS, S-CUBE, GOMX 3, AAUSAT 5 | |
HTV 6 (Kounotori 6) | 2016-076A | 09.12.2016 | Ta YLP-2 | H-2B-304 | with EDT, Lemur-2 18, ..., 21, TechEdSat 5, EGG, TuPOD, AOBA-VELOX 3, STARS C, FREEDOM, ITF 2, Waseda-SAT 3, OSNSAT, Tancredo 1 | |
HTV 7 (Kounotori 7) | 2018-073A | 22.09.2018 | Ta YLP-2 | H-2B-304 | with HSRC, SPATIUM 1, STARS-Me, RSP 00 | |
HTV 8 (Kounotori 8) | 2019-062A | 24.09.2019 | Ta YLP-2 | H-2B-304 | with AQT-D, RWASAT 1, NARSScube 1 | |
HTV 9 (Kounotori 9) | 2020-030A | 20.05.2020 | Ta YLP-2 | H-2B-304 | with iSIM |
Further HTV missions:
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Further ISS missions: ISS complex
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