Nose landing gear bumper with high-pressure inflatable sudden-extension mechanism

Abstract

The invention relates to a nose landing gear bumper with a high-pressure inflatable sudden-extension mechanism, belonging to the landing gear bumper of an airplane. The device provided by the invention comprises a piston cylinder (18), a piston rod (1), a high-pressure air bottle (30), a three-position and three-way magnetic valve (23) and an air pressure sensor (15), wherein the piston cylinder (18) and the piston rod (1) form the outer structure of the bumper; the three-position and three-way magnetic valve (23) comprises a No.1 channel (25) of magnetic valve, a No.2 channel (24) of magnetic valve and a No.3 channel (22) of the magnetic valve which are connected with the high-pressure air bottle (30), the outside atmosphere and an air inflation hole (21); and the air pressure sensor (15) is arranged in an air pressure sensor installing hole (17) of the piston cylinder (18) and is directly in contact with the gas in a T-shaped upper cavity (19). The bumper provided by the invention has the characteristics of short sudden-extension time, good sudden-extension effect, controllable sudden-extension force, simple structure and operation reliability, and can be used for a ground-based airplane for short take-off.

Description

technical field [0001] The invention belongs to a landing gear buffer of a catapult take-off carrier-based aircraft or a short-distance take-off land-based aircraft. technical background [0002] Due to the very short decks allowed for carrier-based aircraft to take off on aircraft carriers, the largest decks available for take-off on large aircraft carriers in the world are only about 100 m at most. The ground effect is lost after leaving the ship, and the carrier-based aircraft may sink after leaving the ship. If the sinking of the track is too large, it is easy to fall into the sea, even if it does not fall into the sea, it will increase the psychological burden of the pilot. At the same time, in order to ensure the flight safety of the carrier-based aircraft after leaving the ship, it is required that the angle of attack of the carrier-based aircraft should be neither too large nor too small. If the angle of attack away from the ship is too small, the lift will not be ...

AI Technical Summary

Problems solved by technology

Although this kind of buffer ensures that the buffer has a certain amount of compression before the protrusion, due to the small return velocity of the oil in the protrusion oil chamber during the protrusion, the elongation speed of the piston rod of the buffer is slowed down, so that the aircraft can operate in a short time. cannot establish sufficient angle of attack within

Therefore, this kind of protruding method takes a long time to protrude, and the protruding effect is not obvious

At the same time, the structure of this kind of buffer is relatively complicated, which increases the structural weight of the landing gear.

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