This page no longer updated from 31 October 2001. Latest version can be found at Ariane 5-1

Gross Mass: 170,800 kg. Empty Mass: 12,700 kg. Thrust (vac): 113,600 kgf. Isp: 430 sec. Burn time: 589 sec. Propellants: Lox/LH2 Isp(sl): 340 sec. Diameter: 5.5 m. Span: 5.5 m. Length: 30.5 m. Country: France. No Engines: 1. Vulcain Status: Hardware. Other designations: H155. Comments: Chamber pressure 108 bar; expansion ratio 45.0; propellant mix ratio 5.3.
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Last update 12 March 2001.
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© Mark Wade, 2001 .