An experimental inveStigation of some effects of longitudinally and vertically varied location of one, engine-pod like shaped, concentrated mass on transonic flutter characteristics of thin cantilever wings having a sweptback angle of quarter chord line of 20° and panel aspect ratio and taper ratio of 4.0 and 0.4, respectively, has been conducted in the N.A.L. 60cm×60cm transonic blowdown wind tunnel for flutter testing at Mach numbers between 0.759 and 0.964.
The experimental results are presented in comparing the boundaries of flutter density and experimental flutter-velocity coefficients of the respective wing-pod configuration experimented, as a function of Mach number, and also are compared with the calcullated results by the matrix iteration method employing two-dimensional incompressible unsteady flow theory as required oscillatory aerodynamic forces.
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