Seat vibration system for simulating aircraft buffeting

Details Seat vibration system for simulating aircraft buffeting Seat vibration system for simulating aircraft buffeting

1976-01-15

1977-06-21

Pinkham, Richard C.

G09B 908

Patent

active

040302083

ABSTRACT:
A system for vibrating a seat within the cockpit of a flight trainer to simulate aircraft buffeting. The seat is mounted at its rear on a pair of linear bearings which permit z axis movement of the seat relative to the trainer cockpit. A hydraulic actuator, acting through a bell crank and link, vibrates the seat up and down under computer control. The computer determines the required seat vibration frequency and amplitude as a function of simulated aircraft angle of attack and maneuvering load factor. Analog signals representing the computed vibration frequency and amplitude are fed to a voltage controlled ramp generator which provides a seat driving signal to the hydraulic actuator through a closed loop servo system.

REFERENCES:
patent: 2700382 (1955-01-01), Brand
patent: 2787842 (1957-04-01), Smith et al.
patent: 3164911 (1965-01-01), Vaughen
patent: 3246403 (1966-04-01), Vaughen
patent: 3376658 (1968-04-01), Thurner
patent: 3378939 (1968-04-01), Carey et al.

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