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Jupiter-C
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== General characteristics == * Weight as configured for [[Explorer 1]] launch, loaded/empty ** Overall, takeoff: 64,000 lb (29,000 kg)/10,230 lb (4640 kg) ** Stage 1 62,700 lb (28,400 kg)/9,600 lb (4,400 kg) ** Stage 2 1,020 lb (460 kg)/490 lb (220 kg) ** Stage 3 280 lb (130 kg)/140 lb (64 kg) * Propulsion ** Stage 1: [[Rocketdyne]] A-7 engine *** Thrust, 83,000 lbf (370 kN) *** burning time, 155 s *** specific impulse, 235 s (2.30 kN·s/kg) *** propellants, liquid oxygen, as oxidizer, and alcohol as fuel *** propellant feed, turbopump type *** turbopump drive, 90% hydrogen peroxide decomposed by catalyst bed to produce steam ** Stage 2: Eleven [[Jet Propulsion Laboratory|JPL]] scaled-down [[MGM-29 Sergeant|Baby Sergeant]] rockets *** Thrust, 16,500 lbf (73 kN) *** burning time, 6.5 s *** specific impulse, 220 s (2.16 kN·s/kg) *** propellant, polysulfide-aluminum and ammonium perchlorate ([[solid propellant]]) ** Stage 3: Three JPL scaled-down [[MGM-29 Sergeant|Baby Sergeant]] rockets *** Thrust, 4,500 lbf (24 kN) *** burning time, 6.5 s *** specific impulse, 235 s (2.30 kN·s/kg) *** propellant, same as for Stage 2
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