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Method for real-time measurement of airfoil deformation using dual laser

A dual-laser, real-time measurement technology, used in measurement devices, radio wave measurement systems, instruments, etc., can solve problems such as high-precision installation difficulties, edge distortion, and heavy weight, and achieve the effect of promoting the aerospace industry.

Inactive Publication Date: 2005-06-29
李小路 +1
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Problems solved by technology

[0003] There are certain defects in the above methods and test schemes: the inclinometer, for example, has a large volume and is not easy to install on a small unmanned aircraft or a light fighter; the Bragg grating sensor is suitable for measuring the local micro vibration of the surface material of the aircraft wing skin, and cannot Measure the overall large deformation of the wing under the action of aerodynamic force; the implementation of photogrammetry technology needs to add a pod, there are problems such as edge distortion during imaging, camera parameters need to be calibrated, etc. In addition, it is heavy in weight, high in cost, and difficult to install with high precision And problems such as the inability to obtain the position information of the relevant points on the wing plane

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  • Method for real-time measurement of airfoil deformation using dual laser
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  • Method for real-time measurement of airfoil deformation using dual laser

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Embodiment Construction

[0020] first need to achieve figure 1 In the dual-laser real-time ranging system 103, the dual-laser real-time ranging system includes a laser rangefinder and a reflector; wherein the laser rangefinder is a distance-finding instrument with a laser as the core, requiring small size and light weight; The laser rangefinder is installed outside the fuselage of the aircraft, and the layout is required according to the actual model; a beam expanding optical system can be added to the laser emitting end of the laser in the laser rangefinder, so that the laser beam has a larger divergence angle; The reflector is a single-wavelength dielectric reflector or a dual-wavelength dielectric reflector.

[0021] figure 2 It is a schematic diagram of using dual lasers to measure the elastic deformation of the wing during the flight of the aircraft. In the figure, the laser 201 is installed on the fuselage, the laser 202 is installed under the fuselage, and the reflector 203 at the top of the...

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Abstract

This invention discloses a double-laser real time measurement of aerofoil deformation, which comprises double-laser real time distance measurement system; data receiving and process system and aerofoil deformation database. It is characterized by the following: the said distance measurement system comprises laser distance meter, reflection mirror; the said data receiving and process system comprises data transmission and conversion system, micro machine computation system; the said aerofoil deformation database comprises detail images of aerofoil deformation and three-dimension data; the said data transmission and conversion system converts the data of the receiving system and then sends them to the micro computation system to get the vertical displacement of the aerofoil top end; to take images and data from the said aerofoil deformation database.

Description

【Technical field】 [0001] The invention is a method for real-time measurement of wing deformation by dual lasers, which mainly utilizes laser ranging technology and mathematical modeling method, and combines computer programs and databases to establish an effective solution to wing deformation during aircraft flight. 【Background technique】 [0002] At present, there are several methods to solve the deformation of the wing: inclinometer, Bragg grating sensor, pressure band and photogrammetry. Noise and vortices in the far zone are measured by a microphone array and a lidar system. In addition to the flight tests and the supporting theoretical work now underway, there will be a number of other tests taking place in Europe, including simulator tests, various system and structural test rig tests, and numerous test. [0003] There are certain defects in the above methods and test schemes: the inclinometer, for example, has a large volume and is not easy to install on a small unm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/02G01S17/08
Inventor 李小路江月松
Owner 李小路
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