Cal/Avlabs Symposium Proceedings (3rd), 18-20 June 1969, Buffalo, New York. Aerodynamics of Rotary Wing and V/STOL Aircraft. Volume I. Rotor/Propeller Aerodynamics. Rotor Noise

摘要

Contents: A continuous vortex sheet representation of deformed wakes of hovering propellers; Propeller wake deformation due to instability of a trailing vortex sheet; Vortex field, tip vortex, and shock formation on a model propeller; An experimental investigation of an oscillating two-dimensional airfoil in reverse flow; Design of airfoils for rotors; A hover performance analysis combining the strip-momentum and prescribed wake theories; Helicopter rotor noise generation; The importance of vortex shedding effects on helicopter rotor noise with and without blade slap; Prediction methods and trends for helicopter rotor noise; and Rotor noise measurements in wind tunnels.