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Devices for rotorcraft capable of providing information concerning the extent of damage related to device fatigue

A technology of rotorcraft and aircraft, which is applied in the direction of rotorcraft, aircraft component testing, aircraft, etc.

Active Publication Date: 2019-10-11
HUTCHINSON SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] This also has a negative impact on the life (fatigue) of the buffer

Method used

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  • Devices for rotorcraft capable of providing information concerning the extent of damage related to device fatigue
  • Devices for rotorcraft capable of providing information concerning the extent of damage related to device fatigue
  • Devices for rotorcraft capable of providing information concerning the extent of damage related to device fatigue

Examples

Experimental program
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Embodiment Construction

[0052] image 3 The main rotor 200 of the rotorcraft is shown, on which a hub 201 can be seen, as well as bushings 202 extending radially from the hub 201 and designed to support the blades of the aircraft.

[0053] Note also the presence of a layered thrust bearing 203 , spherical in the present case, positioned between the hub 201 and the end of each sleeve 202 on the side of the hub 201 .

[0054] It will also be noted the presence of a bumper 204 positioned between the hub 201 and the opposite end of each bushing 202 . They are commonly referred to as hub blade dampers. Buffer 204 is generally not layered.

[0055] The spherical layered thrust bearing 203 and the buffer 204 are typical devices of the present invention.

[0056] It should also be noted that although image 3 The main rotor is shown, but the invention is also applicable to, for example, non-lamellar laminar thrust bearings or dampers which could be implemented on the rear rotor (not shown) of such an aircraf...

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Abstract

The present invention involves a device between the two components (205) that may withstand the two components (205) that may withstand the relative relative motion that is used in the rotor aircraft (205).At least one of the two components installed on the aircraft; and at least one elastic body layer (21) between at least one of the two framework components (21) I ), The second surface (S E ) And the outside (S ext ) Limited, the first surface belongs to the internal volume of the device, and the second surface also belongs to the internal volume of the device. int ), Its characteristics are that the device (205) includes at least two bags (250‑253) within the internal volume of the device, and each bag is located on the outside (S S. ext ) At the predetermined distance, each bag is filled with a product (P). ext ) When it is expanded to the bag, it flows out of its bag.

Description

technical field [0001] The present invention relates to a device designed to be inserted between two parts of a rotorcraft which may be subjected to repeated relative movements with respect to each other and capable of providing information on fatigue-related damage to said device level of information. Background technique [0002] An example of a rotorcraft is a helicopter. [0003] FR 2949432 (D1) proposes such a device, in this example a damper designed to be mounted on a rotorcraft rotor. [0004] The solution envisaged in this document consists in providing a single chamber within the elastomeric layer. [0005] Figures 1 and 2 show two embodiments of buffers, respectively. [0006] The damper 100' comprises two frame elements 100'A, 100'B, each intended to be mounted on one of the parts of the rotorcraft. [0007] In Fig. 1, the bumper 100' comprises: an elastomeric layer 101 ' between two frame elements 100'A, 100'B; and a single chamber 102' within the elastomeri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F15/04
CPCF16F15/04B64C27/51B64F5/60F16F1/38F16F2230/24B64C27/006F16F7/087F16F7/09F16F15/121F16C17/246F16F2236/103F16F2238/04F16F2222/04F16F2222/025F16F2230/0047F16F2224/025
Inventor 埃杜拉多·贝尔特伦弗洛里安·布里齐
Owner HUTCHINSON SA