FIELD: attachment units for flying vehicle engines. SUBSTANCE: device has housing 1 and rod 6 with taper thrust bushes 2 and 3 and elastic gaskets 4 located between them. Located at the bottom of housing 1 between elastic membranes are chambers C, B and D which are filled with liquid and are divided by upper piston 11 and lower piston 12 secured on rod 6. Each piston has circular passage 9 for connecting the adjacent chambers. Located in chamber B between pistons 11 and 12 is elastic gas-filled torus envelope. Gas cushions are formed above elastic membrane 7 and under elastic membrane 8. EFFECT: possibility of dampening rotor frequencies of multi-shaft aircraft engines within 20 to 300 Hz. 2 dwg
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