For the final stage of a launch vehicle which cannot start multiple times,the main constraint of a highly eccentric orbit launch mission is the argument of peri
In the past two decades,the world's unmanned aerial vehicle (UAV) industry has developed rapidly.Various kinds of UAVs have been used in military and civilian f
The divergence angle of laser beam used in space laser communication is usually no more than 100μrad.Using laser beam with small divergence angle to achieve ac
At 13:40 Beijing time on September 21, a LM-4B carrier rocket lifted offfrom the Jiuquan Satellite Launch Center, and successfully launched the HY-2C satellite
It is an important scientific research activity in China to carry out near-space exploration and scientific ex periments via aerospace carriers.Early near-space
At 13:40 Beijing time on September 21, 2020, a LM-4B launch vehicle lifted off from the Jiuquan Satellite Launch Center, successfully deploying the Haiyang 2C (