A side window is usually adopted by the kinetic kill vehicle(KKV) operating in higher atmosphere as a basic layout.

During the research,it is found that there are two types of high-production gas pay in electric property.

In consideration of the situation of natural gas development and delivery with different gas reservoir pressures in northwest gas field,a scheme is proposed that the energy in a high-pressure gas reservoir is used for expansion by a expander,and at the same time a thermodynamic calculation is made on the expander.

These included forecast and analysis of the space environment effects on SZ-5 in four aspects: upper atmosphere, high-energy particle radiation, meteoroids and debris, and important space weather events.