World Library  
Flag as Inappropriate
Email this Article

H-i

Article Id: WHEBN0019113794
Reproduction Date:

Title: H-i  
Author: World Heritage Encyclopedia
Language: English
Subject: Spaceflight/On This Day/Index, N-II (rocket), N-I (rocket), Delta 0100, Delta G
Collection:
Publisher: World Heritage Encyclopedia
Publication
Date:
 

H-i

H-I

The H-I rocket
Function Carrier rocket
Manufacturer Mitsubishi Heavy Industries
Country of origin  Japan
Size
Height
Diameter
Mass
Stages 2 or 3
Capacity
Payload to
LEO
Payload to
GTO
Associated rockets
Family Thor
Comparable Delta
Launch history
Status Retired
Launch sites LA-N, Tanegashima
Total launches 9
Successes 9
First flight 12 August 1986
Last flight 11 February 1992
Boosters - Castor 2
No boosters 6 or 9
Engines 1 TX-354-3
Thrust
Specific impulse 262 sec
Burn time 37 seconds
Fuel Solid
First Stage - Thor-ELT
Engines 1 MB-3-3
Thrust
Specific impulse 290 sec
Burn time 270 seconds
Fuel RP-1/LOX
Second Stage
Engines 1 LE-5
Thrust
Specific impulse 450 sec
Burn time 370 seconds
Fuel LH2/LOX
Third Stage (optional)
Engines 1 UM-129A
Thrust
Specific impulse 291 sec
Burn time 68 seconds
Fuel Solid

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

This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.