Gross Mass: 3,537 kg (7,797 lb). Empty Mass: 535 kg (1,179 lb). Thrust (vac): 68.234 kN (15,340 lbf). Isp: 265 sec. Burn time: 113 sec. Propellants: H2O2/Kerosene. Isp(sl): 251 sec. Diameter: 1.37 m (4.49 ft). Span: 1.37 m (4.49 ft). Length: 2.90 m (9.50 ft). Country: UK. No Engines: 1. Engine: Gamma 2. Status: Out of production. Cost $ : 3.000 million. First Flight: 1969. Last Flight: 1971. No Launched: 4. No Failed: 1.