FIELD: test equipment.
SUBSTANCE: invention relates to equipment for testing instruments for vibration and impact effects. Hard bulkhead with a vibration level sensor is fixed on the base, two identical on-board compressors are installed on various vibration isolation systems and their amplitude-frequency characteristics are measured. One compressor is installed on the regular rubber vibration isolators, and the other compressor is installed on the analyzed two-mass vibration isolation system. Vibration level sensor is attached to the rigid bulkhead, said sensor is connected to an amplifier and spectrometer, then the first compressor is turned on and the amplitude-frequency characteristics of the system are taken, after which the first compressor is turned off and the second compressor, installed on the investigated two-mass vibration isolation system, is turned on. Amplitude-frequency characteristics are taken, then the obtained characteristics from the operation of each of the compressors are compared, and conclusions about the effectiveness of the vibration isolation of each system are made. To determine fundamental frequencies of each of the analyzed vibration isolation systems simulated are impact pulse loads on each of the systems with the help of a diagnostic impact device, comprising a body, piezoelectric dynamometer, impact element and additional mass. Additional mass of the diagnostic impact device is made in the form of a cylinder and placed above the main mass, which contains a cavity filled with rigid balls, which, in determining the fundamental frequencies of each of the analyzed vibration isolation systems, serve as a random stochastic impact imposed on the impact load.
EFFECT: expanded process functionality of testing objects having several flexible links with aircraft structural parts.
1 cl, 6 dwg
