Methods of calculating airframe noise due to the following components are presented: wings and stabilizers, flaps, landing gear 'self-noise', landing gear bay (wheel well) oscillations, separated flow interaction with edges of cavities, and doors associated with gear deployment. The predominant source mechanisms were dipole-like in nature, being related to the local fluctuating aerodynamic forces on struts, airfoil edges, cavity edges, etc. Available data are converted into semiempirical prediction methods to enable a tentative rank ordering of noise sources. A sample application of these prediction procedures is carried out for a typical CTOL passenger jet using actual aircraft parameters, where available.
Diagnostic calculations of airframe-radiated noise
American Institute of Aeronautics and Astronautics, Aero-Acoustics Conference ; 1975 ; Hampton, VA
1975-03-01
Conference paper
No indication
English
Diagnostic calculations of airframe-radiated noise
AIAA | 1975
|Diagnostic Calculations of Airframe-Radiated Noise
AIAA | 1976
|