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The name looks like H-I and H-II. However, the rocket to H-I and the rocket since H-II are the varieties.
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|stages = 2 or 3
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|capacities =
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{{Infobox Rocket/Payload
{{Infobox Rocket/PayloadEarth orbit|LEO
|location = [[Low Earth orbit|LEO]]
|location = Your FACE! :D
|kilos = {{convert|3200|kg|lb}}
|kilos = {{convert|3200|kg|lb}}
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Revision as of 20:09, 3 August 2011

The H-I rocket
FunctionCarrier rocket
ManufacturerMitsubishi Heavy Industries
Country of origin Japan
Size
Height42 metres (138 ft)
Diameter2.44 metres (8.0 ft)
Mass142,260 kilograms (313,630 lb)
Stages2 or 3
Capacity

Template:Infobox Rocket/PayloadEarth orbit

Payload to GTO
Mass1,100 kilograms (2,400 lb)
Associated rockets
FamilyThor
ComparableDelta
Launch history
StatusRetired
Launch sitesLA-N, Tanegashima
Total launches9
Success(es)9
First flight12 August 1986
Last flight11 February 1992
Boosters – Castor 2
No. boosters6 or 9
Powered by1 TX-354-3
Maximum thrust258.9 kilonewtons (58,200 lbf)
Specific impulse262 sec
Burn time37 seconds
PropellantSolid
First stage – Thor-ELT
Powered by1 MB-3-3
Maximum thrust866.7 kilonewtons (194,800 lbf)
Specific impulse290 sec
Burn time270 seconds
PropellantRP-1/LOX
Second stage
Powered by1 LE-5
Maximum thrust102.9 kilonewtons (23,100 lbf)
Specific impulse450 sec
Burn time370 seconds
PropellantLH2/LOX
Third stage (optional)
Powered by1 UM-129A
Maximum thrust77.4 kilonewtons (17,400 lbf)
Specific impulse291 sec
Burn time68 seconds
PropellantSolid

The H-I or H-1 was a Japanese liquid-fuelled carrier rocket, consisting of a licence-produced American first stage and set of booster rockets, and all-Japanese upper stages. It was launched nine times between 1986 and 1992. It replaced the N-II, and was subsequently replaced by the H-II, which used the same upper stages with a Japanese first stage.

The first stage of the H-I was a licence-built version of the Thor-ELT, which was originally constructed for the US Delta 1000 rocket. The stage had already been licence produced in Japan for the N-I and N-II rockets. The second stage was entirely Japanese, using an LE-5 engine. On launches to Geosynchronous transfer orbits, a Nissan-produced UM-129A solid motor was used as a third stage. Depending on the mass of the payload, either six or nine US Castor 2 SRMs would be used as booster rockets.

Launch history

Date/Time (GMT) S/N Payload Orbit Remarks
12 August 1986, 20:45 15(F) EGP (Ajisai) LEO 9 SRMs, 2 stages
27 August 1987, 09:20 17(F) ETS-5 (Kiku-5) GTO 9 SRMs, 3 stages
19 February 1988, 10:05 18(F) CS-3A (Sakura-3A) GTO 9 SRMs, 3 stages
16 September 1988, 09:59 19(F) CS-3B (Sakura-3B) GTO 9 SRMs, 3 stages
5 September 1989, 18:11 20(F) GMS-4 (Himawari-4) GTO 6 SRMs, 3 stages
7 February 1990, 01:33 21(F) MOS-1B (Momo-1B) LEO 9 SRMs, 2 stages
28 August 1990, 09:05 22(F) BS-3A (Yuri-3A) GTO 9 SRMs, 3 stages
25 August 1991, 08:40 23(F) BS-3B (Yuri-3B) GTO 9 SRMs, 3 stages
11 February 1992, 01:50 24(F) JERS-1 (FUYO-1) LEO 9 SRMs, 2 stages

See also

References

  • Wade, Mark. "Delta". Encyclopedia Astronautica. Retrieved 2008-08-31.
  • McDowell, Jonathan. "Thor". Orbital and Suborbital Launch Database. Jonathan's Space Report. Retrieved 2008-08-31.
  • Krebs, Gunter. "H-1". Gunter's Space Page. Retrieved 2008-08-31.