Saturday, June 25, 2016

China - Launch of Long March 7


People's Network just reported the succesful maiden flight of carrier rocket "Long March No.7" after its launch from Wenchang space center in Hainan province.




6月25日20时00分,我国新一代运载火箭长征七号在海南文昌航天发射场点火升空,约603秒后,载荷组合体与火箭成功分离,进入近地点200千米、远地点394千米的椭圆轨道,长征七号运载火箭首次发射圆满成功。

On June 25, at 20:00 local time, China's new carrier rocket "Long March No.7" had a flaming lift-off from Wenchang space launching site in Hainan [province]. After 603 seconds, the payload assembly successfully separated and entered an elliptic orbit with a minimum distance from Earth of 200 km [perigee] and a maximum distance of 394 km [apogee], such making the maiden launch of carrier rocket "Long March No.7" a complete success.


Technical information from other sources:

The Long March 7 is the medium-lift variant of a new generation rocket family that includes the heavier-lift Long March 5 and the small-mid cargo Long March 6. The structure is based on the reliable, man-rated Long March 2F rocket. It inherited the 3.35m-diameter core stage and 2.25m-diameter liquid rocket boosters. Where the earlier Long March 2 rocket family used expensive and dangerous N2O4/UDMH propellants, the Long March 7 uses LOX/kerosene. The engines are shared with the Long March 5 and 6. The goal was to build a more cost-effective and less hazardous rocket family to replace today's Long March 2 and eventually the Long March 3. It will be capable of placing a 5,500 kilograms (12,100 lb) payload into a sun-synchronous orbit.




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