The Long March 1 (长征一号), also known as the Changzheng-1 (CZ-1), was the first member of China's Long March rocket family. Like the U.S.'s and the Soviet Union's first rockets, it was based on a class of ballistic missiles, namely the DF-4 class.
| Function | Small-lift launch vehicle |
|---|---|
| Manufacturer |
|
| Country of origin | China |
| Size | |
| Height | 29.86 m (98.0 ft) |
| Diameter | 2.25 m (7 ft 5 in) |
| Mass | 81,570 kg (179,830 lb) |
| Stages | 3 |
| Capacity | |
| Payload to Low Earth orbit | |
| Mass | 300 kg (660 lb) |
| Associated rockets | |
| Family | Long March |
| Launch history | |
| Status | Retired |
| Launch sites | Jiuquan Satellite Launch Center |
| Total launches | 2 |
| Success(es) | 2 |
| First flight | 24 April 1970 |
| Last flight | 3 March 1971 |
| Carries passengers or cargo | Dong Fang Hong I |
| First stage | |
| Height | 17.835 m (58.51 ft) |
| Diameter | 2.25 m (7 ft 5 in) |
| Empty mass | 4,180 kg (9,220 lb) |
| Gross mass | 65,250 kg (143,850 lb) |
| Powered by | 1 YF-2A (4 x YF-1A) |
| Maximum thrust | 1,101.2 kN (247,600 lbf) (sea level) 1,214.4 kN (273,000 lbf) (vacuum level) |
| Specific impulse | 242.5 s (2.378 km/s) (sea level) 267.4 s (2.622 km/s) (vacuum level) |
| Burn time | About 130 seconds |
| Propellant | UDMH/AK27S |
| Second stage | |
| Height | 7.486 m (24.56 ft) |
| Diameter | 2.25 m (7 ft 5 in) |
| Empty mass | 2,340 kg (5,160 lb) |
| Gross mass | 13,550 kg (29,870 lb) |
| Powered by | YF-3A |
| Maximum thrust | 320.2 kN (72,000 lbf) |
| Specific impulse | 286.9 s (2.814 km/s) |
| Burn time | About 126 seconds |
| Propellant | UDMH/AK27S |
| Third stage – FG-02 | |
| Height | 4.565 m (14.98 ft) |
| Diameter | 0.77 m (2 ft 6 in) |
| Empty mass | 400 kg (880 lb) |
| Gross mass | 2,200 kg (4,900 lb) |
| Powered by | FG-02 |
| Maximum thrust | 181 kN (41,000 lbf) |
| Specific impulse | 254 s (2.49 km/s) |
| Burn time | 38 seconds |
| Propellant | Solid: Polysulfide/AP |
History
Development started in January 1965 as the Seventh Ministry of Machine Building issued a design task. The two stage liquid fueled DF-4 was modified by adding a third stage in order to reach the desired orbit. Long March 1's first flight launched China's first satellite Dong Fang Hong 1 to space on 24 April 1970. The rocket was operational during 1970–1971. Wang Xiji was the chief designer of the rocket.
Launch history
| Date and time (GMT) | Launch site | Payload | Orbit | Function | Decay | Outcome | Notes |
| 24 April 1970 13:35 | Jiuquan, LA-2A | Dong Fang Hong 1 | MEO | Technology demonstration | 14 May 1970 | Success | First satellite launched by China. |
| 3 March 1971 12:15 | Jiuquan, LA-2A | Shijian 1 | LEO | Technology demonstration | 17 June 1979 | Success |
See also
- DF-4 - ICBM on which this rocket is based
- Long March 1D - Other member of this rocket family
- YF-2A - Main propulsion module
- FG-02 - Upper stage
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