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H-2B
H-2B (HTV 3) [JAXA]
The H-2B rocket is an more powerful development based on the H-2A rocket to launch the HTV (Kounotori) cargo vessels to the ISS.
The H-2B launch vehicle is a LOX/LH2 fueled two-stage rocket, as the H-2A, but has a first-stage body of 5.2 m in diameter compared with 4 m for the H-2A and features two instead of one LE-7B main engines. The H-2B first stage holds 70% more propellant than that of the H-2A. The first stage is augmented by four SRB-A3 strap-on solid rocket boosters. The second stage is the same as used in the H-2A and is powered by a single LE-5B engine.
As payload fairing, a stretched version of the H-2A's 5 m payload fairing is available.
→ all launches of H-2 family vehicles
| Version | Strap-On | Stage 1 | Stage 2 |
|---|---|---|---|
| H-2B-304 | 4 × SRB-A | Widebody / 2 LE-7A | LE-5B |
| H-2B-304A ** | 4 × SRB-A | Widebody / 2 × LE-7A | Widebody / LE-5B |
* = suborbital
** = under study
| Performance (kg) | LEO | LPEO | SSO | GTO | GEO | MolO | IP |
|---|---|---|---|---|---|---|---|
| H-2B-304 | 16500 | 8000 | |||||
| H-2B-304A | 10000 |
No: TNr: Serial: Type: Fair Date: LS Payload
1 1 TF1 H-2B-304 5S-H 10.09.2009 Ta YLP-2 HTV 1 / HREP⇑ / SMILES⇑ 2 2 F2 H-2B-304 5S-H 22.01.2011 Ta YLP-2 HTV 2 (Kounotori 2) 3 3 F3 H-2B-304 5S-H 21.07.2012 Ta YLP-2 HTV 3 (Kounotori 3) / SCaN-Testbed⇑ / MCE⇑ / Raiko↑ / WE WISH↑ / FITSat 1↑ / F 1↑ / TechEdSat 1↑ 4 4 F4 H-2B-304 5S-H 03.08.2013 Ta YLP-2 HTV 4 (Kounotori 4) / STP-H4⇑ / TechEdSat 3↑ / ArduSat X↑ / ArduSat 1↑ / PicoDragon↑ 5 5 F5 H-2B-304 5S-H 19.08.2015 Ta YLP-2 HTV 5 (Kounotori 5) / CALET⇑ / Flock-2b 1, ..., 14↑ / SERPENS↑ / S-CUBE↑ / GOMX 3↑ / AAUSAT 5↑ 6 6 F6 H-2B-304 5S-H 09.12.2016 Ta YLP-2 HTV 6 (Kounotori 6) / EDT / Lemur-2 18, ..., 21↑ / TechEdSat 5↑ / EGG↑ / TuPOD↑ / AOBA-VELOX 3↑ / STARS C↑ / FREEDOM↑ / ITF 2↑ / Waseda-SAT 3↑ / OSNSAT↑ / Tancredo 1↑ 7 7 F7 H-2B-304 5S-H 22.09.2018 Ta YLP-2 HTV 7 (Kounotori 7) / HSRC / SPATIUM 1↑ / STARS-Me↑ / RSP 00↑ 8 8 F8 H-2B-304 5S-H 24.09.2019 Ta YLP-2 HTV 8 (Kounotori 8) / AQT-D↑ / RWASAT 1↑ / NARSScube 1↑ 9 9 F9 H-2B-304 5S-H 20.05.2020 Ta YLP-2 HTV 9 (Kounotori 9) / iSIM⇑ ↑ = deployed via ISS airlock Launch sites: Ta = Tanegashima Space Center, Tanegashima, Japan
