AKA: Skylark 1-1. Status: Retired 1978. Thrust: 44.50 kN (10,004 lbf). Gross mass: 1,000 kg (2,200 lb). Unfuelled mass: 240 kg (520 lb). Burn time: 30 s. Height: 5.10 m (16.70 ft). Diameter: 0.44 m (1.44 ft).