Abstract:
This report gives the results of tests on flutter models of cropped delta wings having 40, 50 and 60 deg leading-edge sweepback and a taper ratio of 1 : 7. A comparison is made between the measured flutter speeds and the speeds estimated using a flutter speed formula, and the estimated speeds are found to be within ± 15 per cent of the measured speeds. A modification to the formula is proposed to allow for the high values of stiffness ratio that are obtained for delta wings.
