astronautix.com |
H-2A 2024 |

Family: H.

Low-cost version of H-2 developed for the commercial market. The two SRB-A solid rocket boosters can be supplemented by 4 smaller SSB solid boosters. 0 or 2 SSB's can be fitted for reduced 9,940 kg or 10,740 kg LEO payloads.

*LEO Payload*: 11,730 kg. *to*: 300 km Orbit. *at*: 30.4 degrees. *Payload*: 5,000 kg. *to a*: Geosynchronous transfer trajectory. *Liftoff Thrust*: 477,000 kgf. *Total Mass*: 289,000 kg. *Core Diameter*: 4.0 m. *Total Length*: 49.0 m. *Development Cost $*: 800.00 million. *in* 1999 average dollars. *Launch Price $*: 90.00 million. *in* 1999 price dollars. *Cost comments*: The H-2A 202 (no SSB's) is priced at $ 75 million, and the H-2A 2022 (2 SSB's) at $ 80 million.

2 x H-2A SRB-A*Stage Number*: 0.*Gross Mass*: 76,400 kg.*Empty Mass*: 10,400 kg.*Thrust (vac)*: 230,000 kgf.*Isp*: 280 sec.*Burn time*: 101 sec.*Isp(sl)*: 230 sec.*Diameter*: 2.5 m.*Span*: 2.5 m.*Length*: 15.2 m. Propellants: Solid*No Engines*: 1. SRB-A2 x H-2A SSB*Stage Number*: 1.*Gross Mass*: 15,200 kg.*Empty Mass*: 2,100 kg.*Thrust (vac)*: 63,900 kgf.*Isp*: 283 sec.*Burn time*: 60 sec.*Diameter*: 1.0 m.*Span*: 1.0 m.*Length*: 14.9 m. Propellants: Solid*No Engines*: 1. Castor 4AXL2 x H-2A SSB*Stage Number*: 2.*Gross Mass*: 15,200 kg.*Empty Mass*: 2,100 kg.*Thrust (vac)*: 63,900 kgf.*Isp*: 283 sec.*Burn time*: 60 sec.*Diameter*: 1.0 m.*Span*: 1.0 m.*Length*: 14.9 m. Propellants: Solid*No Engines*: 1. Castor 4AXL1 x H-2A-1*Stage Number*: 3.*Gross Mass*: 113,600 kg.*Empty Mass*: 13,600 kg.*Thrust (vac)*: 112,000 kgf.*Isp*: 440 sec.*Burn time*: 390 sec.*Isp(sl)*: 338 sec.*Diameter*: 4.0 m.*Span*: 4.0 m.*Length*: 37.2 m. Propellants: Lox/LH2*No Engines*: 1. LE-7A1 x H-2A-2*Stage Number*: 4.*Gross Mass*: 19,600 kg.*Empty Mass*: 3,000 kg.*Thrust (vac)*: 14,000 kgf.*Isp*: 447 sec.*Burn time*: 534 sec.*Diameter*: 4.0 m.*Span*: 4.0 m.*Length*: 9.2 m. Propellants: Lox/LH2*No Engines*: 1. LE-5B

- 455 - Isakowitz, Steven J,,
*International Reference to Space Launch Systems Third Edition*, AIAA, Washington DC, 2000.

Last update 12 March 2001.

Definitions of Technical Terms.

Contact Mark Wade with any corrections or comments.

Conditions for use of drawings, pictures, or other materials from this site..

© Mark Wade, 2001 .