FW-4D Gross Mass: 300 kg (660 lb). Empty Mass: 25 kg (55 lb). Thrust (vac): 24.997 kN (5,620 lbf). Isp: 287 sec. Burn time: 31 sec. Propellants: Solid. Isp(sl): 250 sec. Diameter: 0.50 m (1.64 ft). Span: 0.50 m (1.64 ft). Length: 1.48 m (4.85 ft). Country: USA. No Engines: 1. Engine: FW4-D. Cost $ : 0.750 million. First Flight: 1965. Last Flight: 1972. No Launched: 25. No Failed: 1. Used on Launch Vehicles: Delta E. Delta L.                   Contact us with any corrections, additions, or comments. Conditions for use of drawings, pictures, or other materials from this site.. To contact astronauts or cosmonauts. © Mark Wade, 1997 - 2007 except where otherwise noted.

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