AKA: Vanguard 3. Status: Retired 1959. Number: 12 . Thrust: 11.60 kN (2,608 lbf). Gross mass: 210 kg (460 lb). Unfuelled mass: 31 kg (68 lb). Specific impulse: 230 s. Specific impulse sea level: 210 s. Burn time: 31 s. Height: 2.00 m (6.50 ft). Diameter: 0.50 m (1.64 ft).
Thrust (sl): 10.600 kN (2,383 lbf). Thrust (sl): 1,076 kgf.