A new approach to measuring model deflection

摘要

This paper illustrates results of a series of deformationmeasurements on a dummy wing which were performed in the NLR workshop.Two different Moire techniques are applied: the Painted Pattern Method,and the Projected Pattern Method. The out-of-plane distortions, obtainedunder applied different loads, are compared with those measured in fivesections along the wing span using a 3D Co-ordinate Measuring Machineand with those predicted using a CAD system. Two examples of wind tunnelmeasurements are briefly discussed