FIELD: test equipment.
SUBSTANCE: invention relates to test equipment and can be used for investigation of vibration isolation systems. Method involves arranging on a base additional plates with vibro-isolated objects, as well as a recording equipment, herewith on the base the analyzed object is installed, for example, an aircraft equipment, in the form of two identical onboard compressors to produce compressed air. Herewith one of the compressors is installed on standard rubber vibration absorbers, and the other compressor is installed on the investigated dual-mass vibration isolation system including rubber vibration absorbers and a resiliently damping intermediate plate with vibration absorbers, for example, in the form of plates from polyurethane, which like the standard rubber vibration absorbers of the compressor are installed on a rigid bulkhead, which via a vibro-damping gasket is installed on the base. Onto the rigid bulkhead, between the compressors, a vibration sensor is fixed, a signal from which is directed to an amplifier and the recording equipment, for example an octave spectrometer operating within the frequency band (Hz): 2; 4; 8; 16; 31.5; 63; 125; 250; 500; 1,000; 2,000; 4,000; 8,000 Hz, and then the obtained amplitude-frequency characteristics of operation of each of the compressors are compared and conclusions on vibration isolation efficiency of each system, where they are installed, are made.
EFFECT: technical result is expansion of technological capabilities of testing objects having several flexible links with the aircraft structural parts.
1 cl, 5 dwg
