P4 Designer: SNPE. Gross Mass: 4,500 kg (9,900 lb). Empty Mass: 1,000 kg (2,200 lb). Propellants: Solid. Thrust(vac): 176.500 kN (39,679 lbf). Thrust(sl): 155.200 kN (34,890 lbf). Isp: 273 sec. Isp (sea level): 240 sec. Burn time: 55 sec. Diameter: 1.50 m (4.90 ft). Length: 2.60 m (8.50 ft). Chambers: 1. Country: France. Status: Out of Production. First Flight: 1970. Last Flight: 1975. Flown: 9.00. P4 used on Rocket Stages Used on stage: Diamant BP-2.                   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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