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

A front landing gear, inflatable technology, used in landing gear, shock absorbers, shock absorbers, etc., can solve the problem of long protrusion time, slow down the elongation speed of the buffer piston rod, and the oil return speed of the protrusion oil cavity. Small problems, etc., to achieve the effect of reliable operation, convenient shipboard modification, and simple control system

Inactive Publication Date: 2011-05-11
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
View PDF4 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Nose landing gear bumper with high-pressure inflatable sudden-extension mechanism
  • Nose landing gear bumper with high-pressure inflatable sudden-extension mechanism
  • Nose landing gear bumper with high-pressure inflatable sudden-extension mechanism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0011] as attached figure 1 It is a schematic diagram of the structure of the front landing gear buffer with a high-pressure inflatable protrusion mechanism. The piston cylinder 18 is composed of a piston cylinder outer cylinder 33 and a piston cylinder inner cylinder 14 . The piston cylinder inner cylinder 14 is composed of a cylindrical cylinder with a central oil hole 8 on the bottom surface and an annular upper wall surface, wherein the piston cylinder inner cylinder 14 divides the above-mentioned piston cylinder outer cylinder 33 into a T-shaped upper chamber 19 and a concave lower chamber 12; The upper wall surface of the cylinder 14 and the side wall of the cylindrical cylinder are provided with vent holes 13; the T-shaped upper chamber 19 side walls are also provided with air pressure sensor mounting holes 17 and inflation holes 21; the piston rod 1 is composed of the piston rod outer cylinder 34, the piston 11 and the The cross-section oil needle 3 is composed of an ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): F16F9/16F16F9/34F16F9/32B64C25/60
Inventor 聂宏崔俊华张明段萍萍
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products