This page no longer updated from 31 October 2001. Latest version can be found at Ariane 5-0

Gross Mass: 277,500 kg. Empty Mass: 39,800 kg. Thrust (vac): 660,000 kgf. Isp: 275 sec. Burn time: 129 sec. Propellants: Solid Isp(sl): 250 sec. Diameter: 3.0 m. Span: 3.0 m. Length: 31.6 m. Country: France. No Engines: 1. P230 Status: Hardware. Other designations: SPB235. Comments: Nozzle expansion ratio increased from 9.7 to 11.0 after 1997. Chamber pressure 61.3 bar. HTPB propellant.
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Last update 12 March 2001.
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© Mark Wade, 2001 .