FW4-D Designer: Thiokol. Gross Mass: 300 kg (660 lb). Empty Mass: 25 kg (55 lb). Propellants: Solid. Thrust(vac): 25.000 kN (5,620 lbf). Thrust(sl): 21.800 kN (4,901 lbf). Isp: 287 sec. Isp (sea level): 250 sec. Burn time: 31 sec. Diameter: 0.50 m (1.64 ft). Length: 1.48 m (4.85 ft). Chambers: 1. Country: USA. First Flight: 1965. Last Flight: 1972. Flown: 25. FW4-D used on Rocket Stages Used on stage: FW-4D. on launch vehicle: Delta E. Used on stage: FW-4D. on launch vehicle: 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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