NLS Semistage

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Model: NLS Semistage. Gross Mass: 36,000 kg (79,000 lb). Empty Mass: 36,000 kg (79,000 lb). Thrust (vac): 14,310.000 kN (3,217,010 lbf). Isp: 425 sec. Burn time: 100 sec. Propellants: Lox/LH2. Isp(sl): 350 sec. Diameter: 8.70 m (28.50 ft). Span: 9.00 m (29.50 ft). Length: 9.00 m (29.50 ft). Country: USA. No Engines: 4. Motor: STME. Status: Study 1991. Cost $ : 40.000 million. First Flight: 1997. Other designations: National Launch System. Used on Launch Vehicles: NLS. Contact us with any corrections, additions, or comments. Conditions for use of drawings, pictures, or other materials from this site.. To contact astronauts or cosmonauts. © Mark Wade, 1997 - 2008 except where otherwise noted.