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Chang Zheng 3
Part of CZ
CZ-3
CZ-3
Chinese orbital launch vehicle. The Long March 3 was a three-stage launch vehicle designed for delivery of satellites of 1,500 kg mass into geosynchronous transfer orbit. The first and second stages were based on the CZ-2C, and designed and manufactured by the Shanghai Academy of Spaceflight Technology. The majority of the technology and flight hardware used in the CZ-3 had been qualified and proven on the CZ-2C. The third stage, manufactured by CALT, was equipped with an LOX/LH2 cryogenic engine. Long March 3 was also capable of placing spacecraft into an elliptical or circular low earth orbit and sun synchronous orbit.

AKA: Chang Zheng-3;CSL-3;CZ-3;Long March 3. Status: Retired 2000. First Launch: 1984-01-29. Last Launch: 2000-06-25. Number: 13 . Payload: 4,800 kg (10,500 lb). Thrust: 2,960.00 kN (665,430 lbf). Gross mass: 204,000 kg (449,000 lb). Height: 43.25 m (141.89 ft). Diameter: 3.35 m (10.99 ft). Apogee: 200 km (120 mi).

The third stage used the first Chinese liquid oxygen/liquid hydrogen engine. This had a vacuum thrust of 44 kN (4.5 metric tons thrust) and was capable of one restart. Development of the cryogenic third stage engine was a major technical achievement. This advanced in technology engine was superior in performance (vacuum specific impulse 50% more than that of a conventional propellant engine). Its combustion products were safe and non- toxic. But the boiling points of liquid hydrogen and liquid oxygen were low (-253 deg C and 183 deg C respectively) and they were inflammable and explosive. Many problems in low temperature technology and multiple restarting of the engine in high vacuum and zero-G had to be solved. During development longitudinal coupling vibration was a knotty problem that took some time to cure. The problems were all surmounted under the leadership of Chief Designer Xie Guanxuan.

LEO Payload: 4,800 kg (10,500 lb) to a 200 km orbit at 28.50 degrees. Payload: 1,400 kg (3,000 lb) to a GTO. Launch Price $: 40.000 million in 1999 dollars.

Stage Data - CZ-3


More at: Chang Zheng 3.

Family: orbital launch vehicle. Country: China. Engines: YF-20A, YF-22A/23A, YF-73. Spacecraft: Apstar, HS 376, DFH-2, FY-2. Projects: Asiasat, Chinastar. Launch Sites: Xichang, Xichang LC1. Stages: CZ-YF-73, CZ-3-1, CZ-3-2. Agency: CALT.

1984 January 29 - . 12:25 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3. FAILURE: Third stage failed to ignite.. Failed Stage: U.
1984 April 8 - . 11:20 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
1986 February 1 - . 12:37 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
1988 March 7 - . 12:41 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
1988 December 22 - . 12:40 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
1990 February 4 - . 12:28 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
1990 April 7 - . 13:30 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
1991 December 28 - . 12:00 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3. FAILURE: Third stage failed to ignite. Partial Failure.. Failed Stage: U.
1994 July 21 - . 10:55 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
1996 July 3 - . 10:47 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
1996 August 18 - . 10:27 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
1997 June 10 - . 12:01 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.
2000 June 25 - . 11:50 GMT - . Launch Site: Xichang. Launch Complex: Xichang LC1. LV Family: CZ. Launch Vehicle: Chang Zheng 3.

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