"Two way high-pressure self-locking valve" maintains the safety of "Chang'e 3"
"double ball screw is a rotary friction to high-pressure self-locking valve by means of balls". It is a special key actuator that uses electric control commands to control the valve and realize the execution of spacecraft through high-pressure gas. As a professional unit engaged in the research and production of special valves in the aerospace system, Henan space administration immediately formed a special research and development team after receiving this special valve research and development task. From a monthly perspective, "two-way high-pressure self-locking valve" is a special key actuator that uses electric control commands to control the valve to realize the execution of spacecraft through high-pressure gas. Henan Space Administration, as a professional unit engaged in the development and production of special valves in the space system, immediately formed a special research and development team after receiving this special valve development task
in the development process, there are no relevant standards, and there are two lack of relevant data, and many technical problems have been encountered. In order to ensure the special performance requirements of the valve, the R & D team should not only do complex computer simulation calculations, but also test the influence of various changing factors on the safety of the valve by foam particle machine. More than 10 (5) processing schemes for taking out the test pieces were determined before and after, and more than 20 sets of tooling and fixtures were made. Finally, the appropriate process method was found
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