Long March 7
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| Function | Medium to heavy orbital launch vehicle |
|---|---|
| Manufacturer | CALT |
| Country of origin | China |
| Size | |
| Height | 53.10 m (174.2 ft) |
| Diameter | 3.35 m (11.0 ft) |
| Mass | 594,000 kg (1,310,000 lb) |
| Stages | 2 |
| Capacity | |
| Associated rockets | |
| Family | Long March |
| Comparable | Delta IV, Atlas V, Falcon 9, H-IIA, Angara |
| Launch history | |
| Status | In development |
| Launch sites | Wenchang, Jiuquan, Xichang, Taiyuan |
The Long March 7 (Chinese: 长征七号运载火箭), or Chang Zheng 7 as in pinyin, abbreviated LM-7 for export or CZ-7 within China, is a Chinese liquid-fuelled carrier rocket, which is being developed by the China Aerospace Science and Technology Corporation. Its maiden flight is scheduled for 2016. [3]
As one of the new generation rocket family of Long March 5, Long March 6 and Long March 7, it is to be a medium-heavy launch vehicle and fits the gap between the heavy Long March 5 family and the small-mid Long March 6 family.
The structure will be based on the reliable man-rated Long March 2F rocket. Thus it will inherit the 3.35m-diameter core stage and 2.25m-diameter liquid rocket boosters. However, it will use LOX/kerosene fuel instead of the expensive and dangerous N2O4/UDMH fuels used previously in the Long March 2 rocket family. The new engine is borrowed from the engines developed for Long March 5, similar to Long March 6. The target is to build a more cost-effective and less environmentally damaging rocket family to replace today's Long March 2 and potentially Long March 3 serial to satisfy both domestic and international launch market needs.[4] It will be capable of placing 5,500 kilograms (12,100 lb) of payload into a sun-synchronous orbit.[1]
With payloads in the range of 10-20 tons cited, it is likely to use two YF-100 first-stage engines at the 1st core stage, and one YF-100 engine for each of its 4 liquid rocket boosters.[5][6]
Bradley Perrett from Aviation Week writes that the description of Long March 7 corresponds with the mid-sized launcher that the China Academy of Launch Vehicle Technology detailed in 2007. The configuration displayed then had the two K3 core modules, four K2 boosters and a special 3-meter-dia. module, H3, that would presumably be an optional third stage for missions beyond low Earth orbit. But the range of payloads quoted for Long March 7, 10-20 tons, shows that it would be built with a variety of booster combinations. A single YF-100 would presumably provide second-stage propulsion.[5]
References
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<references />, or <references group="..." />| LM 1 family |
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| LM 2 family | ||
| LM 3 family | ||
| LM 4 family | ||
| LM 5 family | ||
| LM 6 family | ||
| LM 7 family |
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| LM 8 family | ||
| LM 9 family | ||
| LM 11 family | ||
- ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
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- ↑ 17 March 2015, China Outlines New Rockets, Space Station and Moon Plans [1]
- ↑ SINA News Sina, 19 November 2010, [2]
- ↑ 5.0 5.1 Bradley Perrett, Aviation Week, 15 March 2010, Longer Marches
- ↑ Bradley Perrett, Aviation Week, 5 March 2010
