Accession Number:
AD0768797
Title:
An Analytical and Experimental Study of Farfield Rotor Wake Geometry and Velocity
Descriptive Note:
Master's thesis
Corporate Author:
PENNSYLVANIA STATE UNIV STATE COLLEGE DEPT OF AEROSPACE ENGINEERING
Personal Author(s):
Report Date:
1973-08-01
Pagination or Media Count:
89.0
Abstract:
All fixed wing aircraft generate trailing vortex wakes whose circulatory strength is dependent on flight conditions and aircraft geometry. A rotor also generates a vortex wake. A vortex sheet is shed from each blade. Each sheet rolls up rapidly outboard to form a tip vortex. The purpose of the study reported here is to estimate the rotor wake geometry and velocity field downstream of the rotor for the particular case where the rotor wake exhibits strong similarities to the fixed wing wake. A method is developed by which the helicopter far field wake can be readily compared to the far field wake generated by an equivalent wing.
Descriptors:
Subject Categories:
- Aerodynamics