16 citations · 56 across the 17 of their papers we have counts for
6 papers · 1 filter
Shielding of rotor noise by plates and wings
Michael Carley
A method of noise reduction proposed for the next generation of aircraft is to shield noise from the propulsion system, by positioning the noise source over a wing or another surfa…
Sound from rotors in non-uniform flow
Michael Carley
An analysis is presented for the evaluation of the acoustic field of a rotating source in a non-uniform potential flow. Other than the restriction to low flow Mach numbers, the met…
Radial cancellation in spinning sound fields
Michael Carley
The radiating part of a circular acoustic source is determined on the basis of an exact analysis of the radiation properties of a source with angular dependence $\exp \J nθ$ and ar…
Series expansion for the sound field of a ring source
Michael Carley
An exact series expansion for the field radiated by a monopole ring source with angular variation in source strength is derived from a previously developed expression for the field…
Information in spinning sound fields
Michael Carley
The information content of a spinning sound field is analyzed using a combination of exact and asymptotic results, in order to set limits on how accurately source identification ca…
Inversion of spinning sound fields
Michael Carley
A method is presented for the reconstruction of rotating monopole source distributions using acoustic pressures measured on a sideline parallel to the source axis. The method requi…