Shockabsorber for the tail prop of an aircraft.

摘要

The shock absorber comprises a cylinder (1) enclosing a pressurised gas chamber (3) and an adjacent volume of hydraulic fluid (4), disposed within a jacket (6) internal to the cylinder (1), as well as a rod (7) sliding in the cylinder (1) and carrying a piston (9) equipped with a permanent orifice (10) for compression lamination of the hydraulic fluid passing from the volume (4) to the annular chamber (16). The cross-section of the orifices (10) is such that shock absorption takes place over the entire stroke for penetration speeds below or equal to a first selected threshold, cavitation and then shock absorption for penetration speeds within the range between this first threshold and a second threshold, and cavitation without shock absorption for speeds exceeding the second threshold, the device then behaving as a limiter of the force transmitted to the aircraft. Application to the equipment of aircraft, especially tail props for helicopters. <IMAGE>