This page no longer updated from 31 October 2001. Latest version can be found at J-1-2

Gross Mass: 12,800 kg. Empty Mass: 2,400 kg. Thrust (vac): 53,515 kgf. Isp: 282 sec. Burn time: 73 sec. Propellants: Solid Isp(sl): 0 sec. Diameter: 1.4 m. Span: 1.4 m. Length: 2.7 m. Country: Japan. No Engines: 1. M-23-J Status: Devel. Other designations: M-23. Comments: Version for J-1 F2 has 300 kg heavier empty mass.
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Last update 12 March 2001.
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© Mark Wade, 2001 .