Pegasus XL-1 Designer: Hercules. Gross Mass: 17,934 kg (39,537 lb). Empty Mass: 2,886 kg (6,362 lb). Propellants: Solid. Thrust(vac): 589.000 kN (132,412 lbf). Thrust(sl): 361.800 kN (81,336 lbf). Isp: 293 sec. Isp (sea level): 180 sec. Burn time: 73 sec. Diameter: 1.27 m (4.16 ft). Length: 8.88 m (29.13 ft). Chambers: 1. Chamber Pressure: 58.00 bar. Area Ratio: 40.00. Country: USA. First Flight: 1994. Last Flight: 2006. Flown: 28. Pegasus XL-1 used on Rocket Stages Used on stage: Pegasus XL-1. on launch vehicle: Pegasus XL.                   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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