Pegasus-4

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Model: Pegasus-4. Gross Mass: 90 kg (198 lb). Empty Mass: 17 kg (37 lb). Thrust (vac): 666 N (149 lbf). Isp: 236 sec. Burn time: 241 sec. Propellants: Hydrazine. Isp(sl): 0 sec. Diameter: 0.97 m (3.18 ft). Span: 0.97 m (3.18 ft). Length: 0.25 m (0.82 ft). Country: USA. No Engines: 3. Motor: MR-107. Status: Retired 1994. Cost $ : 0.100 million. First Flight: 1991. Last Flight: 1994. No Launched: 8. Used on Launch Vehicles: Pegasus. 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 - 2008 except where otherwise noted.