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Deployable and retractable shock strut

A shock strut, pivotable technology, applied in the direction of shock absorbers, springs/shock absorbers, shock absorbers, etc., can solve the problem that shock absorbers cannot provide shock absorption and energy dissipation, and weaken the function of shock struts And other issues

Pending Publication Date: 2018-11-13
SAFRAN LANDING SYST CANADA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in either case, the mid-section of the shock absorber does not provide the desired shock absorption and energy dissipation, and thus reduces the function of the shock strut

Method used

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  • Deployable and retractable shock strut
  • Deployable and retractable shock strut
  • Deployable and retractable shock strut

Examples

Experimental program
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Embodiment Construction

[0030] figure 1 A perspective view of a deployable shock strut assembly 100 for a vehicle according to the present invention is shown in . In some embodiments, deployable shock strut assembly 100 is used as part of a landing gear assembly for an aircraft or helicopter, or as a ground support for a hyperloop.

[0031] The shock strut assembly 100 includes a shock absorber 102 having a piston 104 telescopically engaging a cylinder 106 . Shock absorber 102 is configured to dampen impacts in a conventional manner (eg, during landing), typically by compressing a gas (eg, nitrogen or dry air) contained in shock strut assembly 100 and by means of a gas that is also contained in strut assembly 100 An incompressible fluid such as hydraulic fluid performs work to dissipate the energy of compression.

[0032] One end of piston 104 is pivotally connected to a carriage for a ground engaging member, such as trailing arm assembly 110 . The trailing arm assembly 110 has a trailing arm body...

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PUM

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Abstract

A shock strut for a vehicle includes a housing with a through channel and a motor mount, and a motor fixed to the housing. The cylinder of a shock strut is configured to define a lead screw on its outer surface. The cylinder extends through the housing. The piston of the shock strut is attached to a ground engaging assembly. A gear nut rotatably mounted in the housing threadably engages the threaded cylinder, and is configured to be driven by the motor. The housing is attached to the vehicle, and the gear nut is controllably rotated to extend and retract the shock strut. A sensor provided on the assembly monitors the position of the shock strut. A torsion link assembly reacts rotational forces on the cylinder.

Description

technical field [0001] The present invention relates to a deployable vehicle shock strut or shock strut (eg, oil hydraulic strut) for vehicles such as aircraft and hyperloop vehicles. Background technique [0002] Oil struts (Oleo-pneumatic shock struts) convert kinetic energy into heat by using gas to provide elastic spring characteristics and oil for shock absorption. In aircraft, oil pressure struts cushion landing shocks or impact disturbances and dampen repetitive oscillations and the aircraft's tendency to bounce or "bounce". For example, hydraulic struts can be hybrid or split, and can be single-stage or multi-stage. Other types of shock struts exist but are not commonly used in the prior art. See [Currey, Norman S., Aircraft Landing Gear Design: Principles and Practices (1988)]. For example, an oil hydraulic strut for a landing gear is disclosed in US Patent No. 2,279,447 to Cowey, which is incorporated herein by reference in its entirety. [0003] Aircraft, heli...

Claims

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Application Information

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IPC IPC(8): B64C25/60B61G11/18
CPCB61G11/18B64C25/60B64C25/20B64C25/58B64C2025/008B64C2025/125B61B13/10B61F13/00F16F9/061F16F9/56F16F2232/08F16F2236/04
Inventor 格雷姆·皮特·亚瑟·克林史蒂文·凯文·安伯格克莱门特·罗德里格斯·德·苏扎·梅雷莱斯民·帕萨德·阿迪卡里穆罕默德·莫伊德·依拉卡侯科赛义德·穆罕默德·哈什米
Owner SAFRAN LANDING SYST CANADA INC