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Model: Cargo LV Stage 1. Gross Mass: 1,093,330 kg (2,410,380 lb). Empty Mass: 88,449 kg (194,996 lb). Thrust (vac): 10,441.061 kN (2,347,244 lbf). Isp: 452 sec. Burn time: 420 sec. Propellants: Lox/LH2. Isp(sl): 361 sec. Diameter: 8.40 m (27.50 ft). Span: 8.40 m (27.50 ft). Length: 64.27 m (210.85 ft). Country: USA. No Engines: 5. Motor: SSME. Status: Study 2005.

Core vehicle proposed by NASA for Project Constellation exploration of moon and Mars. Originally it would use shuttle external tank tooling. This version was proposed by Thiokol prior to Constellation decision. Modification of shuttle external tank. Includes 28.6 tonne SSME engine pod.

Model: Ares Stage 1. Gross Mass: 787,700 kg (1,736,500 lb). Empty Mass: 64,200 kg (141,500 lb). Thrust (vac): 8,705.990 kN (1,957,184 lbf). Isp: 453 sec. Burn time: 480 sec. Propellants: Lox/LH2. Isp(sl): 363 sec. Diameter: 8.70 m (28.50 ft). Span: 8.70 m (28.50 ft). Length: 43.00 m (141.00 ft). Country: USA. No Engines: 3. Motor: SSME. Status: In development. First Flight: 1991.

Core vehicle proposed by NASA for Project Constellation exploration of moon and Mars. It would use shuttle external tank tooling. All masses estimated.

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