AKA: Lex-1. Status: Retired 1967. Thrust: 10.00 kN (2,248 lbf). Gross mass: 100 kg (220 lb). Unfuelled mass: 20 kg (44 lb). Burn time: 20 s. Height: 2.60 m (8.50 ft). Diameter: 0.16 m (0.52 ft).