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Chang Zheng 1M

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CZ-1

AKA: Chang Zheng-1M;CZ-1M;Long March 1M. Status: Out of production. Thrust: 1,101.20 kN (247,560 lbf). Gross mass: 80,930 kg (178,420 lb). Height: 31.00 m (101.00 ft). Diameter: 2.25 m (7.38 ft).

Stage Data - CZ-1M

• Stage 1. 1 x CZ-1-1. Gross Mass: 64,100 kg (141,300 lb). Empty Mass: 4,100 kg (9,000 lb). Thrust (vac): 1,224.575 kN (275,295 lbf). Isp: 268 sec. Burn time: 130 sec. Isp(sl): 241 sec. Diameter: 2.25 m (7.38 ft). Span: 4.00 m (13.10 ft). Length: 17.84 m (58.53 ft). Propellants: Nitric acid/UDMH. No Engines: 4. Engine: YF-2A. Status: In Production.

• Stage 2. 1 x CZ-1-2. Gross Mass: 15,000 kg (33,000 lb). Empty Mass: 2,700 kg (5,900 lb). Thrust (vac): 306.143 kN (68,824 lbf). Isp: 275 sec. Burn time: 110 sec. Isp(sl): 200 sec. Diameter: 2.25 m (7.38 ft). Span: 2.25 m (7.38 ft). Length: 5.35 m (17.55 ft). Propellants: Nitric acid/UDMH. No Engines: 1. Engine: YF-2A. Status: In Production. Comments: Masses, engine performance estimated based on successor improved stage and YF-2 engines in first stage.

• Stage 3. 1 x CZ-1M-3. Gross Mass: 1,830 kg (4,030 lb). Empty Mass: 256 kg (564 lb). Thrust (vac): 29.400 kN (6,609 lbf). Isp: 291 sec. Burn time: 150 sec. Isp(sl): 115 sec. Diameter: 1.30 m (4.20 ft). Span: 1.30 m (4.20 ft). Length: 2.30 m (7.50 ft). Propellants: Solid. No Engines: 1. Engine: Iris. Status: Development 1980.