Blade-vortex Interaction Noise Generation and DirectionalityCornell University, 1996 - 320 pages |
Contents
Review of BladeVortex Interaction BVI Noise Research | 10 |
BladeVortex Interaction Noise Generation | 18 |
BladeVortex Interaction Noise Directivity | 57 |
Copyright | |
5 other sections not shown
Common terms and phrases
acoustic hotspots acoustic intensity acoustic radiation advance ratio advancing side Aeroacoustics aerodynamic approximately azimuth Beddoes blade interacting blade loading blade motion Blade-Vortex Interaction Noise blade-vortex intersection sources BVI acoustic BVI impulse BVI interaction BVI noise directivity BVI noise predictions BVI noise radiation BVI sources Chapter cone trace intersections cone traces emitted disk effects far-field flight helicopter important BVI impulse factor inverse square law JVX rotor Lowson Mach cone wavefront Mach number sources Mach number/radiation cone NASA noise contours noise field non-compact number/radiation cone method parameters prescribed wake model propagation radiated BVI noise radiation cone caustics radiation cone traces ray tube area region retreating side rigid wake Ringler ROBLOP rotor blade loading rotor noise rotorcraft shown in figure single-bladed rotor sound pressure level Splettstoesser supersonic trace Mach tilt-rotor tip-path-plane angle TPP angle trace Mach number trace Mach number/radiation variation vortex element vortex strength factor wake geometry WOPWOP