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Delta RS-68
Part of Delta 4 Family
LOx/LH2 propellant rocket stage. Low cost expendable stage using lower performance engine. Used in Delta 4, Boeing EELV. Engine can be throttled to 60%.

Status: In production. Thrust: 3,312.76 kN (744,737 lbf). Gross mass: 226,400 kg (499,100 lb). Unfuelled mass: 26,760 kg (58,990 lb). Specific impulse: 420 s. Specific impulse sea level: 365 s. Burn time: 249 s. Height: 40.80 m (133.80 ft). Diameter: 5.10 m (16.70 ft). Span: 5.10 m (16.70 ft).



Country: USA. Engines: RS-68. Launch Vehicles: Delta 4M+(4,2), Delta 4M, Delta 4H, Delta IV Small, Delta 4M+(5,4), Delta 4M+(5,2). Propellants: Lox/LH2.

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