Vibration performance test system under super-high temperature environment

Abstract

The present invention relates to an aircraft vibration test, especially to a vibration performance test system under a super-high temperature environment. The system comprises: a test piece; a heatingpiece configured to heat the test piece; an acceleration sensor fixed at the surface of the test piece; a sensor cooling housing fixed at the upper surface of the test piece, wherein the accelerationsensor is locate in a first inner cavity; a force sensor located below the test piece in a vertical direction; an exciting rod fixedly arranged between the test piece and the force sensor; a vibration exciter fixed at the bottom portion of the force sensor; an insulation board horizontally arranged between the test piece and the force sensor; a cooling device configured to regulate temperatures in the first inner cavity and the exciting rod; and a processor configured to receive and process information transmitted by the acceleration sensor and the force sensor. The vibration performance testsystem under the super-high temperature environment can automatically regulate the temperature of a sensor environment so as to maintain that the sensor still works in a set temperature interval andensure the safety of the sensor and the accuracy of measurement data.

Description

technical field [0001] The invention relates to aircraft vibration testing, in particular to a vibration characteristic testing system in an ultra-high temperature environment. Background technique [0002] With the rapid development of aircraft technology, strict requirements such as hypersonic speed and long endurance have been put forward for aircraft. Hypersonic aircraft has become one of the main research directions at present. Countries around the world are competing to carry out related research work. Based on this situation, my country The research work on hypersonic aircraft has also begun. Hypersonic flight speed is fast and the flight time is long. During the flight, the various structures of the aircraft will vibrate for a long time. Changes in the inherent characteristics of vibration have a significant impact on the flutter analysis of aircraft, so it is of great significance to study the structural vibration characteristics under high temperature conditions. ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a vibration characteristic testing system in an ultra-high temperature environment to solve at least one problem existing in the existing vibration characteristic testing system

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