Helicopter blade bird strike performance test verification method

A kind of test verification, helicopter technology, applied in the direction of elasticity test, machine/structural component test, measuring device, etc., can solve the problem that there is no verification method for the blade bird strike performance of the helicopter rotor system

Inactive Publication Date: 2018-06-15
CHINA HELICOPTER RES & DEV INST
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Problems solved by technology

[0003] In the prior art, there is no method for verifying the bird strike performance of the blade blade, a key comp

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  • Helicopter blade bird strike performance test verification method
  • Helicopter blade bird strike performance test verification method

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Embodiment Construction

[0020] In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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Abstract

The present invention discloses a helicopter blade bird strike performance test verification method. The method comprises the following steps of: the step 1: selecting at least blades in helicopter blades as test pieces, patching strain gages at the strike section area of each test piece, and installing one acceleration sensor near the strike section area of each test piece; the step 2: installingeach test piece to simulate the installation state of each test piece; the step 3: applying the loaded environment when flight of each test piece is simulated; the step 4: performing birdshot test debugging; the step 5: performing checking after a bird strike test is performed; and step 6: performing a fatigue life test and performing assessment after the bird strike test is performed. The helicopter blade bird strike performance test verification method provides a helicopter bird strike flight safety verification method, and therefore the helicopter flight safety can be improved.

Description

technical field [0001] The invention relates to the technical field of helicopter structural strength tests, in particular to a method for verifying the bird impact performance test of helicopter blades. Background technique [0002] As a special low-altitude aircraft, helicopters are mainly used in the range of 0 to 1000 meters. For example, the use time ratio of a certain type of aircraft in the range of 0 to 600 meters is as high as 40%. This range is the main activity of flying birds. Therefore, the accidents of bird strikes on helicopters worldwide have remained high. Although a helicopter is a low-speed aircraft, its flight speed is generally within 300km / h, but compared with a fixed-wing aircraft, it has a high-speed rotating rotor system. Generally, the speed of the main rotor system of a helicopter is between 200 rpm and 400 rpm. , the speed of the tail rotor is higher, so if the bird strike occurs in the rotor system, the relative speed at the time of impact is al...

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Application Information

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IPC IPC(8): G01M5/00
CPCG01M5/0016
Inventor 岳巍沈亚娟余洵臧曙光孟庆春胡磊吕明月
Owner CHINA HELICOPTER RES & DEV INST
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