Long March 1
 |
|
| Manufacturer | MAI, CASC, CAST |
|---|---|
| Country of origin | China |
| Size | |
| Height | 29.86 metres (98.0 ft) |
| Diameter | 2.25 metres (7.4 ft) |
| Mass | 81,570 kilograms (179,830 lb) |
| Stages | 3 |
| Capacity | |
| Payload to LEO | 300 kilograms (660 lb) |
| Associated rockets | |
| Family | Long March |
| Launch history | |
| Status | Retired |
| Launch sites | Jiuquan Satellite Launch Center |
| Total launches | 2 |
| Successes | 2 |
| First flight | 24 April 1970 |
| Last flight | 3 March 1971 |
| Notable payloads | Dong Fang Hong I |
| First stage | |
| Length | 17.835 m (58.51 ft) |
| Diameter | 2.25 m (7.4 ft) |
| Empty mass | 4,180 kg (9,220 lb) |
| Gross mass | 65,250 kg (143,850 lb) |
| Engines | 1 YF-2A (4 x YF-1A) |
| Thrust | 1,101.2 kN (247,600 lbf) (SL) 1,214.4 kN (273,000 lbf) |
| Specific impulse | 242.5 s (2.378 km/s) (SL) 267.4 s (2.622 km/s) (vacuum) |
| Burn time | about 130 s |
| Fuel | UDMH/AK27S |
| Second stage | |
| Length | 7.486 m (24.56 ft) |
| Diameter | 2.25 m (7.4 ft) |
| Empty mass | 2,340 kg (5,160 lb) |
| Gross mass | 13,550 kg (29,870 lb) |
| Engines | YF-3A |
| Thrust | 320.2 kN (72,000 lbf) |
| Specific impulse | 286.9 s (2.814 km/s) |
| Burn time | about 126 s |
| Fuel | UDMH/AK27S |
| Third stage - FG-02 | |
| Length | 4.565 m (14.98 ft) |
| Diameter | 0.77 m (2.5 ft) |
| Empty mass | 400 kg (880 lb) |
| Gross mass | 2,200 kg (4,900 lb) |
| Engines | FG-02 |
| Thrust | 181 kN (41,000 lbf) |
| Specific impulse | 254 s (2.49 km/s) |
| Burn time | 38s |
| Fuel | Solid: Polysulfide |
The Long March 1 (长征一号), also known as the Changzheng-1 (CZ-1), is the first member of China's Long March 1 (rocket family).
Development started in January 1965 as the Seventh Ministry of Machinery Industry issued a design task. The two stage liquid fueled Dong Feng 14 was modified by adding a third stage in order to make it to the desired orbit. Long March 1's second flight launched China's first satellite Dong Fang Hong 1 to space on April 24, 1970. The rocket was operational during 1970-1971.
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