Unlock instant, AI-driven research and patent intelligence for your innovation.

Overpressure and heeling detector for a shock absorber or the like

A detector and overvoltage technology, applied in the field of detectors, can solve problems such as hard landing of aircraft

Active Publication Date: 2011-08-10
SAFRAN LANDING SYSTEMS
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] the possibility that an aircraft will experience a hard landing, that is, a situation in which it descends at a vertical speed greater than that for which the landing gear is designed

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
  • Overpressure and heeling detector for a shock absorber or the like
  • Overpressure and heeling detector for a shock absorber or the like

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The invention is described herein with reference to an aircraft shock absorber, which shock absorber 1 can be found in figure 1 . In the picture it is the separate shock absorber that is hinged between the landing gear strut that is attached directly to the aircraft and the rocker arm that is hinged to the strut and carries the Dropped wheels.

[0016] The shock absorber 1 comprises a cylinder 2 within which a rod 3 is telescopically mounted so as to slide sealingly. A drilled tube 5 called a post carries a diaphragm 4 that is fixed to the end of the cylinder 2 and separates the first chamber of "oil" from the second chamber, which is located in the rod 3 extends inside the cylinder 2 up to the membrane 4, while a second chamber extends inside the cylinder 2 up to the membrane 4, said second chamber being called the "air" chamber because it is mainly filled with gas under pressure. A third chamber, called the “annular” chamber, extends between the outer surface of th...

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 an overpressure and heeling detector that comprises a hollow body (11) in which a piston (14) can sealingly slide and is subjected to a pressure via an inlet (12) of the body in communication with a housing at said pressure, the piston being maintained in position against the pressure by a threshold retaining means (21) adapted for releasing the piston when the pressure reaches or exceeds said threshold so that the piston is urged under the action of the pressure towards an indication position, and in which the piston is rigidly connected to a lug (27) protruding from the body inlet so as to be urged against the threshold retaining means.

Description

technical field [0001] The invention relates to a detector for overpressure and bottoming, in particular for aircraft landing gear shock absorbers. Background technique [0002] It is possible for an aircraft to experience a hard landing, ie, a situation in which it descends at a vertical speed greater than that for which the landing gear is designed. The shock absorber of the landing gear may then be subjected to overpressurization, during which the pressure within the shock absorber becomes greater than the design pressure of the shock absorber, or may even be subjected to bottoming, during which both sides of the shock absorber stretchable parts become interior adjacencies. Conditions other than hard landings can also lead to overpressure or bottoming. In particular, such an event can occur if the aircraft is overloaded or if the shock absorbers are poorly adjusted (inappropriate fuel or expansion levels). [0003] Detecting the occurrence of such events is important b...

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
Patent Type & Authority Applications(China)
IPC IPC(8): F16F9/32
CPCF16F9/3264B64D45/00B64D2045/008
Inventor P·马丁D·杜克斯
Owner SAFRAN LANDING SYSTEMS