CURRENT STATUS AND DEVELOPMENT TREND OF CRYOGENIC HEAT PIPE TECHNOLOGIES IN SPACECRAFT

Cryogenic system，mainly composed of cryogenic cooling devices and cryogenic heat transport devices，provides the necessary temperature environment for the future astronomical observation，scientific detection and long-term space mission，as well as for superconducting magnets.One of the most efficient cryogenic heat transport technology is cryogenic heat pipe technology，including grooved heat pipe，loop heat pipe，flexible heat pipe and pulsating heat pipe.In this paper，the current status of the above four types of heat pipe in theoretical study，application and flight verify tests are summarized.Moreover，the development trend of the cryogenic heat pipe technology was proposed.