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Non-contact measuring method for deformation of aircraft wing structure

A non-contact measurement, wing structure technology, applied in measurement devices, photogrammetry/video measurement, instruments, etc., can solve problems such as structural static deformation

Inactive Publication Date: 2012-12-19
NANTONG JINNIU MACHINERY MFR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the deficiencies of the existing technology in measuring the static deformation of the structure during the flight of the aircraft, the present invention provides a non-contact measurement method for the deformation of the aircraft wing structure

Method used

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  • Non-contact measuring method for deformation of aircraft wing structure
  • Non-contact measuring method for deformation of aircraft wing structure
  • Non-contact measuring method for deformation of aircraft wing structure

Examples

Experimental program
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specific example

[0044] Specific example: X1 wing aeroelastic static deformation photogrammetry, the measured actual wingspan is 14806mm, and the chord length of the winglet tip is 180mm:

[0045] (a) Ground state:

[0046] (1) Fix the two cameras on the two spirit levels respectively;

[0047] (2) The two measuring points are located at the left porthole of the 9th row and the 26th row, and the inner angle between the main optical axis of the left camera lens and the line connecting the two cameras is α 1 =58°, the inner angle between the main optical axis of the right camera lens and the line connecting the two cameras is α 2 = 70°;

[0048] (3) Adjust the reading of the level meter to zero and keep it until the end of taking pictures;

[0049] (4) Take pictures of the object to be measured, and measure the distance L=11900mm between the two cameras;

[0050] (5) Read the point at the corresponding position on the photo (point C on the leading edge of the winglet 0 and trailing edge poi...

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Abstract

The invention discloses a non-contact measuring method for deformation of an aircraft wing structure, which comprises the following steps: respectively fixing two cameras on two leveling gauges; rotating the cameras to a suitable position and recording angular magnitude of a left inner included angle and a right inner included angle; setting numerical reading of the leveling gauges to zero; photographing and measuring an interval between the two cameras; reading parameter values of characteristic points of photographs; calculating to obtain coordinate values of the photographs; and obtaining torsion angles of wings through converting the obtained space coordinates. The method can be used for measuring on a flying airplane and cannot be affected by the limit of porthole positions of the airplane, is insensitive to influence on mechanical vibrating strength and can be used in common flying environments.

Description

technical field [0001] The invention belongs to the technical field of aeronautical aeroelasticity analysis, in particular to a method for measuring the deformation of the wing structure of an aircraft during flight. Background technique [0002] During the flight of the aircraft, due to the aerodynamic load acting on the wings, large structural deformations will occur. At present, this deformation is mainly studied by computer simulation calculations, and there is no relevant experiment to verify it. Because when measuring in flight, the observation position is greatly restricted by the position of the porthole, and aviation regulations do not allow the use of lasers, high-power electronic equipment and wireless communication equipment during flight. In the existing non-contact measurement methods, lasers are used as light sources or sensors need to be attached to the measured object, and some are also completed by shooting, but the entire system needs to be in a 22-degree ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C11/00G01C11/02
Inventor 史爱明万兵兵张陈安
Owner NANTONG JINNIU MACHINERY MFR