Comparison of two propeller source models for aircraft interior noise studiesThe sensitivity of the predicted synchrophasing (SP) effectiveness trends to the propeller source model issued is investigated with reference to the development of advanced turboprop engines for transport aircraft. SP effectiveness is shown to be sensitive to the type of source model used. For the virtually rotating dipole source model, the SP effectiveness is sensitive to the direction of rotation at some frequencies but not at others. The SP effectiveness obtained from the virtually rotating dipole model is not very sensitive to the radial location of the source distribution within reasonable limits. Finally, the predicted SP effectiveness is shown to be more sensitive to the details of the source model used for the case of corotation than for the case of counterrotation.
Document ID
19870026322
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Mahan, J. R. (Virginia Polytechnic Inst. and State Univ. Blacksburg, VA, United States)
Fuller, C. R. (Virginia Polytechnic Institute and State University Blacksburg, United States)