Real-time measurement of aerodynamic deformation of wing by laser rangefinder

A novel method for measuring the aerodynamic deformation of wings during fluttering in real-time by using a two-laser rangefinder is proposed for the first time, in which one laser is fixed above the plane and the other is fixed below the plane. Based on the distances between lasers and the diffuse reflector on wingtip, the wingtip displacement is geometrically calculated. The displacement of a certain point on the surface of the wing is acquired from the database formed in wind tunnel test, including the function of the aerodynamics deformation of wing. The method mentioned above and error analysis is explained by giving a simple two-dimensional example. The method is useful and all-pervading for real-time measurement of deformation of wing during fluttering.

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