FIELD: test equipment.
SUBSTANCE: invention relates to testing equipment. Device contains a base on which additional plates with fixed to them vibration-proof devices are arranged and recording equipment, on the base the aircraft equipment is installed, for example, two identical onboard compressors for obtaining compressed air on board the aircraft. At that, one compressor is installed on the standard rubber vibration isolators, 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. On the rigid bulkhead, between compressors, a vibration sensor is secured, signal from which is supplied to the amplifier and recording equipment, for example, octave spectrometer operating in 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
