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Connection method of transmission interface of embedded sensor for rotor blade and rotor blade

A transmission interface and rotor blade technology, applied in the field of rotor blade dynamic load testing, can solve problems such as shedding, changes in rotor blade mass distribution characteristics, and loose transmission interfaces.

Active Publication Date: 2020-10-02
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0004] However, adding strain gauges, connecting wires and structural glue on the surface of the blade will have a certain impact on the aerodynamic shape of the rotor blade, and at the same time, the mass distribution characteristics of the rotor blade will also be slightly changed
After a long time of testing, the transmission interface is easy to loosen or fall off, and the reliability of data signal transmission is difficult to guarantee

Method used

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  • Connection method of transmission interface of embedded sensor for rotor blade and rotor blade
  • Connection method of transmission interface of embedded sensor for rotor blade and rotor blade
  • Connection method of transmission interface of embedded sensor for rotor blade and rotor blade

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Embodiment Construction

[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Hereinafter, embodiments of the present invention will be described in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refe...

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Abstract

The embodiment of the invention discloses a connection method of a transmission interface of an embedded sensor for a rotor blade and the rotor blade, which relate to the technical field of rotor blade dynamic load test, and can improve the reliability of the transmission interface of a fiber bragg grating sensor data signal embedded in the rotor blade. The method comprises the steps that S1, a transmission interface box (2) is installed at the root of a rotor blade (1), and a bottom surface extension edge (6) of the transmission interface box is embedded into the lower surface of a surface layer skin (5) of the rotor blade (1); S2, a tail fiber of a fiber grating sensor (3) embedded in the rotor blade (1) is connected with a connecting fiber (10) of external fiber grating demodulator equipment through a transmission interface box (2), and the transmission interface box (2) serves as a junction box; and S3, the rotor blade (1) provided with the transmission interface box (2) is heated,molded and cured. The method is suitable for reinforcing the sensor transmission interface in the rotor blade dynamic load test.

Description

technical field [0001] The invention relates to the technical field of rotor blade dynamic load testing, in particular to a connection method for a transmission interface of an embedded sensor of a rotor blade and the rotor blade. Background technique [0002] The dynamic load measurement of the helicopter rotor blades is an important basis for formulating the rotor blade load spectrum and determining the blade life, and it is also an effective method for monitoring the use status of the helicopter rotor blades. At present, the dynamic load measurement of helicopter rotor blades uses the traditional strain gauge sensor measurement method. In this method, the strain gauge is pasted on the surface of the blade at a designated position. During the flight of the helicopter, the resistance value of the strain gauge changes , to obtain the structural load on the specific position of the helicopter rotor blade. [0003] In practical applications, the strain gauge sensor is pasted ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64F5/10B64C27/473G01M13/00G01L1/24G01D5/353
CPCB64F5/10B64C27/473G01M13/00G01L1/242G01D5/353
Inventor 周国臣刘政韩东林长亮
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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