A Measurement Method for High Aspect Ratio Flexible Wing

Abstract

The invention discloses a measuring method for a high aspect ratio flexible wing, which comprises the steps that mark points are distributed on the surface of a wing zone that needs a deformation detection; two photographic devices are mounted at the top of an airframe of a plane; stereoscopic imaging is conducted for the wing by the two photographic devices in a flying process to acquire stereopairs; three-dimensional coordinates of the mark points in a local coordinate system are acquired through the stereopairs; and a deformation state of the wing is confirmed according to changes of the three-dimensional coordinates of the mark points in the local coordinate system. The measuring method overcomes the difficulty that the deformation of the high aspect ratio wing is difficult to monitor in real time, and realizes a quick and accurate acquisition of the deformation state of the wing.

Description

technical field [0001] The invention belongs to the field of aircraft flight status and parameter monitoring, and relates to a method for measuring a flexible wing with a large aspect ratio. Background technique [0002] Over the past ten years, more and more attention has been paid to high-altitude and long-endurance aircraft, and it has broad development prospects in military and civilian applications such as long-term reconnaissance and monitoring, environmental monitoring, and communication relay. This type of aircraft generally has the characteristics of large aspect ratio wings, light weight structure, and great flexibility. Under the action of flight load, the wings of large-aspect-ratio aircraft will produce large bending and torsional deformations. The real-time and high-precision measurement of the large deformation of such wings can be used to evaluate the performance of the aircraft, design and structure of the aircraft. research is of great significance. [00...

AI Technical Summary

Problems solved by technology

Obviously this method is not suitable for large aspect ratio flexible wings

[0004] Another method is to use sensors to monitor the deformation of the wing. This method can obtain the deformation of the wing in real time, but it needs to arrange more sensors on the wing body, which is expensive, and the sensor data is easy to obtain during high-altitude flight. The real-time deformation of the wing cannot be visually monitored due to interference

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