The reporter learned on the 25th from China Academy of Aerospace Science and Technology that the 140-ton vibration test system independently developed by the General Assembly and Environmental Engineering Department has successfully completed the acceptance test and a certain type of vibration environment test recently. The successful development of the world's largest thrust electric vibration test system means that China's environmental simulation test capability has been further improved.
It is understood that during the launch phase of the rocket, the spacecraft will withstand the test of vibration, shock, noise and other mechanical environments. The shaker is a test system that simulates the vibration environment of the spacecraft when it takes off.
In order to meet the needs of the large-scale spacecraft mechanical testing represented by the second phase of China's manned space project, the system was designed and built from the beginning of 2013 and was completed and put into use by the end of 2015. It has completely independent independent intellectual property rights.
The system mainly includes a vertical vibration test system and a horizontal vibration test system. The vertical vibration test system consists of four shaking tables, magnesium alloy welding expansion table and guide support system, synchronous control system, and intelligent health monitoring system. During the development, it broke through four simultaneous excitations, large-size magnesium alloy table top welding, and high High precision, high stability and many other key technologies, such as high-stability guiding support, system static load capacity of 40 tons, maximum thrust 140 tons, anti-overturning capacity of 350 kN, system frequency greater than 200 Hz.
The horizontal vibration test system consisting of two vibratory tables adopts a “pin-shaped†combined horizontal sliding table top, which overcomes the problems of processing and manufacturing of large-scale magnesium alloy table tops, and has single and dual-use modes; The remaining bearings have a static load capacity of over 100 tons, a maximum thrust of 70 tons, an anti-overturning capacity of 6,000 kilonewtons, and a system frequency of more than 300 hertz. The technical indicators of the entire system have reached the international advanced level.
On-site assembly and debugging is the key to the development of the system. Within 5 meters, the assembly error must be controlled within 0.05 millimeters and the local area should be within 0.02 millimeters. (Reporter Fu Yifei)
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