Some Interesting parts:
Some Interesting parts:
Chief designer Lan Xiaohui (兰晓辉) and his team spent four years to develop the 7500-newton variable thrust engine for the Tianwen-1 Mars lander. Due to the size and weight limitations imposed by the lander's design, the engine had to be both lighter and more compact. Compared to Chang'e lunar lander's variable thrust engine, which also develops 7500 newtons of thrust, the Mars lander engine is smaller and lighter by two-thirds (see 3rd and 4th image below).
Do you have any info on the other performance parameters of the engines? Like Isp or the fuel it uses? I assume the older engine had better Isp because of the engine bell nozzle geometry.
according to this post it is still alive
According to this post, Shiyan-10 satellite still alive.
Posted on weibo and later deleted.
It say "congratulation on successfully rescue Shiyan-10 satellite"
SY-10 could be an early warning test sat in elliptical orbit
Confirmed, SY-10 in Molniya orbit. First CN sat in such an orbit. Molniya orbit is used for communications service to Arctic regions and high altitude surveillance missions (missile early warning & SIGINT). SY-10 is probably EWSY-10 could be an experimental Early Warning sat in HEO from SAST :