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Dynamic load measurement device

A measurement device and dynamic load technology, applied in the direction of aircraft component testing, etc., can solve the problems of large coupling, low measurement accuracy, poor dynamic characteristics, etc., and achieve the effects of small coupling, accurate and convenient calculation, and stable and reliable performance.

Inactive Publication Date: 2018-11-30
CHINA HELICOPTER RES & DEV INST
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  • Claims
  • Application Information

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Problems solved by technology

The dynamic load measurement used by other units in the landing gear drop test is the former Soviet-style three-point support force measurement platform, which has shortcomings such as low measurement accuracy, large coupling degree, and poor dynamic characteristics.

Method used

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Embodiment Construction

[0022] 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 invention provides a dynamic load measurement device and relates to the technical field of helicopter dynamic testing. The device comprises an upper plate, eight single-dimension mechanisms and abaseplate. The upper plate and the baseplate are arranged in parallel, and four lug sheets are arranged in the middle of one side of the upper plate and connected with the four single-dimension mechanisms; the other ends of the two single-dimension mechanisms are connected to the two corners, at the same side of the upper plate, of the baseplate, the other end of each of another two single-dimension mechanisms is connected to the middle of the baseplate, in a similar way, the other four single-dimension mechanisms are installed between the middle of the other side of the upper plate and the baseplate, and a load sensor is arranged on each single-dimension mechanism. The eight load sensors form measurement circuits of eight Wheatstone bridges, and dynamic loads in all directions can be obtained through decoupling calculation. The dynamic load measurement device is high in practicability, has the advantages of high precision, low coupling and the like and can be successfully applied to falling vibration tests and anti-crash tests of helicopter undercarriages of various types.

Description

technical field [0001] The invention relates to the technical field of helicopter dynamics tests, in particular to a dynamic load measurement device, which is mainly used for the measurement of three-component dynamic loads in helicopter landing gear drop shock / crash resistance tests. Background technique [0002] Dynamic measurement is one of the most commonly used and most complex measurement methods in aerospace dynamics tests. In helicopter dynamics tests, landing gear drop shock / anti-crash tests have very high measurement requirements for dynamic loads. The size of dynamic loads is the key to judging The only standard for energy absorption when a helicopter lands is the only standard for verifying the design of the landing gear. In the helicopter dynamics test, the measurement accuracy of the three-component dynamic load of the landing gear drop shock / anti-crash test is required to be ≤0.5%, and the coupling degree between each component is ≤±2%. At the same time, it mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/60
CPCB64F5/60
Inventor 邓景辉章剑廖良全赵卓
Owner CHINA HELICOPTER RES & DEV INST
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