Douglas Aircraft Company experience in flight flutter testing is reviewed briefly, with comments on state-of-the-art excitation and instrumentation techniques used up to the present time. The limitations of previous techniques are discussed with emphasis on the problem of: (1) establishing a flutter margin of safety for predicted marginal flutter modes; (2) resolving instances of flutter not predicted by theoretical calculations in advance; and (3) delaying the airplane demonstration by time consumed in acquisition and reduction of flutter data. Current Douglas philosophy in flight flutter testing is presented and a description given of steady-state vane excitation system development, automatic data handling system, and the potential application of automatic computing methods for increasing flutter data yield.
Douglas Experience in Flight Flutter Testing
1975-01-01
Conference paper
No indication
English
NTIS | 1992
|AIAA | 1975
|Flight Flutter Testing Symposium
NTRS | 1975
NTIS | 1963
|Flight Flutter Testing Symposium
NTIS | 1975