METHOD FOR VIBRATION ISOLATION OF HELICOPTER PILOT AND SEAT SUSPENSION FOR REALISING SAID METHOD Russian patent published in 2016 - IPC B64D11/06 B60N2/50 

FIELD: aviation.

SUBSTANCE: invention relates to methods and devices for vibration isolation of workstations of aircraft pilots. Method for vibration isolation of a helicopter pilot consists in that suspension includes an additional elastic element with controlled stiffness element in parallel to action of first elastic element. Method includes minimising total stiffness of both flexible elements at specified interval of amplitudes of relative displacements of system, defined by conditions of its safe operation. Method includes generating and activating an addition signal for controlling parameters of elastic element at frequency which is less than main frequency of natural vibrations of system. Seat suspension comprises guide mechanism, elastic element and device for control of parameters of elastic element. Suspension is equipped with additional elastic element with adjustable alternating rigidity, installed parallel to action of first elastic element. Control device comprises two channels, one of which has possibility of activation at frequency which is less than main frequency of vibrational motion system.

EFFECT: wider range of frequencies of vibration isolation at preset amplitude limitations of relative displacements.

3 cl, 13 dwg