Liberty

American manufacturer that sought to privately develop and market low cost commercial orbital launch vehicles in the 1990's.

Flyaway Unit Cost 1985$: 2.000 million.

Stage Data - Liberty

• Stage 1. 1 x Liberty 1. Gross Mass: 17,000 kg (37,000 lb). Empty Mass: 2,240 kg (4,930 lb). Thrust (vac): 245.000 kN (55,078 lbf). Isp: 270 sec. Burn time: 157 sec. Isp(sl): 230 sec. Diameter: 1.58 m (5.18 ft). Span: 1.58 m (5.18 ft). Length: 10.20 m (33.40 ft). Propellants: Lox/Kerosene. No Engines: 1. Engine: Liberty-1. Status: Development 1988.

• Stage 2. 1 x Liberty 2. Gross Mass: 2,180 kg (4,800 lb). Empty Mass: 180 kg (390 lb). Thrust (vac): 17.789 kN (3,999 lbf). Isp: 300 sec. Burn time: 326 sec. Isp(sl): 200 sec. Diameter: 1.43 m (4.69 ft). Span: 1.43 m (4.69 ft). Length: 4.02 m (13.18 ft). Propellants: N2O4/MMH. No Engines: 1. Engine: Liberty-2. Status: Development 1988.