Aircraft shock strut having an improved piston head

Details Aircraft shock strut having an improved piston head Aircraft shock strut having an improved piston head

1996-01-24

1999-12-07

Oberleitner, Robert J.

Spring devices

Vehicle

Comprising compressible fluid

267 6426, 1882821, F16F 500

Patent

active

059969792

ABSTRACT:
The invention is in the field of aircraft shock struts, of the type having a piston cylinder and a piston head, for slowing movement of an aircraft structure toward the ground, particularly during landing or take-off. The invention provides a more constant change in pressure across the piston head, that is generally independent of piston head speed, relative to the prior art. The piston head has a damped valve poppet received within the piston head moveable from a first position wherein the damped valve poppet covers a pressure relief orifice to a second position that uncovers a pressure relief orifice, thereby providing a more constant change in pressure across the piston head.

REFERENCES:
patent: 3647239 (1972-03-01), Katsumori
patent: 3888436 (1975-06-01), Sealey
patent: 4524929 (1985-06-01), Gebhard
patent: 4595159 (1986-06-01), Hrusch
patent: 4826094 (1989-05-01), Whiteley

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