Long March 4A
Rendering of Long March 4A | |
Function | Carrier rocket |
---|---|
Manufacturer | CALT |
Country of origin | China |
Size | |
Height | 41.9 metres (137 ft)[1] |
Diameter | 3.35 metres (11.0 ft)[1] |
Mass | 249,000 kilograms (549,000 lb)[1] |
Stages | 3 |
Capacity | |
Payload to LEO | |
Mass | 4,000 kilograms (8,800 lb)[2] |
Payload to SSO | |
Mass | 1,500 kilograms (3,300 lb)[2] |
Associated rockets | |
Family | Long March |
Derivative work | Long March 4B |
Launch history | |
Status | Retired |
Launch sites | LA-7, TSLC |
Total launches | 2 |
Success(es) | 2 |
First flight | 6 September 1988 |
Last flight | 3 September 1990 |
[edit on Wikidata] |
The Long March 4A (Chinese: 长征四号甲火箭), also known as the Changzheng 4A, CZ-4A and LM-4A, sometimes misidentified as the Long March 4 due to the lack of any such designated rocket, was a Chinese orbital carrier rocket. It was launched from Launch Area 7 at the Taiyuan Satellite Launch Center. It was a three-stage rocket, used for two launches in 1988 and 1990. On its maiden flight, on 6 September 1988, it placed the FY-1A weather satellite into orbit. On its second, and final, flight it launched another weather satellite, FY-1B.
A few days after the launch of FY-18, the third-stage of the CZ-4A launch vehicle exploded in the 895 km orbit, creating more than 80 pieces of space debris. This incident led to a redesign of the rocket to include a residual propellant venting system. A venting system was not included in the 4a because of the concern that it would damage the satellite.
It was replaced by a derivative, the Long March 4B, which first flew in 1999. The Long March 4B offers a more powerful third stage, and a larger payload fairing.
List of launches
Flight No. | Date (UTC) | Launch site | Payload | Orbit | Result |
---|---|---|---|---|---|
1 | September 6, 1988 20:30 | LA-7, TSLC | Fengyun 1A | SSO | Success |
2 | September 3, 1990 00:53 | LA-7, TSLC | Fengyun 1B | SSO | Success |
References
- ^ a b c Mark Wade. "CZ-4A". Encyclopedia Astronautica. Archived from the original on 2008-02-26. Retrieved 2008-04-27.
- ^ a b Gunter Krebs. "CZ-4 (Chang Zheng-4)". Gunter's Space Page. Retrieved 2008-04-27.
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