An approach to the calculation of the pressure field produced by rigid wide chord dual rotation propellers of high solidity in compressible flowAn unsteady lifting service theory for the counter-rotating propeller is presented using the linearized governing equations for the acceleration potential and representing the blades by a surface distribution of pulsating acoustic dipoles distributed according to a modified Birnbaum series. The Birnbaum series coefficients are determined by satisfying the surface tangency boundary conditions on the front and rear propeller blades. Expressions for the combined acoustic resonance modes of the front prop, the rear prop and the combination are also given.
Document ID
19860064828
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Ramachandra, S. M. (NASA Lewis Research Center Cleveland, OH, United States)
Bober, L. J. (NASA Lewis Research Center Cleveland, OH, United States)