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Family: H. Country: Japan. Status: Development. Other Designations: H-IIA 2024.
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.
SpecificationsLEO 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.
- Stage Number: 0. 2 x H-2A SRB-A 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-A
- Stage Number: 1. 2 x H-2A SSB 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 4AXL
- Stage Number: 2. 2 x H-2A SSB 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 4AXL
- Stage Number: 3. 1 x H-2A-1 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-7A
- Stage Number: 4. 1 x H-2A-2 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
Bibliography:- 455 - Isakowitz, Steven J,, International Reference to Space Launch Systems Third Edition, AIAA, Washington DC, 2000.
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Last update 12 March 2001.
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