For the researches of aerospace string pyrotechnically actuated separation devices, traditional development approach bases on design-test-modification, which requires repeatedly testing and modifying design, and results in increasing project cost and development period.

A reliability evaluation method for pyrotechnics of recovery system of manned spacecraft is put forward based on the characteristics of pyrotechnics and the standard of GJB376-87,on the condition that the parameters of the normal distribution stress and strength are unknown.

As a key of recovery and landing subsystem of manned spacecraft,high reliability of the pyrotechnics is demanded.

Application study of water-erosible materials in water-induced separation device;

) and according to the principle of specific gravity and using the method of double decker filter, the new separating device for eggs of striped flea beetle in crucifer vegetable filed was design and made.

The separating device was designed to solving key questions of sugar transplanter high-speed separation and order supply for seedlings.