The Aerodynamic and Aeroelastic Characteristics of a Full-Scale Rotor Operating at very High Advance Ratios and during Start/Stop Operation.

摘要

The purpose of this program was to study the aerodynamic and aeroelastic behavior of a rigid two-bladed rotor system operating at steady-state advance ratios up to approximately 15. Also to be investigated was the operation of this rotor during periods of acceleration and deceleration which were representative of the starting/stopping sequence of a stowable rotor. The objective of the program was accomplished by conducting wind tunnel tests in the NASA-Ames 40- x 80-foot wind tunnel on a full-scale rotor. Hub forces and moments,blade pressure distributions (chordwise and spanwise),and blade flatwise,chordwise and torsional moments were measured. The experimental results were used to correlate with existing theory.