AKA: Alcor IA. Status: Retired 1974. Thrust: 49.00 kN (11,015 lbf). Gross mass: 500 kg (1,100 lb). Unfuelled mass: 200 kg (440 lb). Burn time: 23 s. Height: 1.90 m (6.20 ft). Diameter: 0.52 m (1.70 ft).