Accession Number : ADA294465

Title :   Vortex Wakes of Rotorcraft,

Corporate Author : NATIONAL AERONAUTICS AND SPACE ADMINISTRATION MOFFETT FIELD CA AMES RESEARCH CENTER

Personal Author(s) : McCroskey, W. J.

PDF Url : ADA294465

Report Date : 1995

Pagination or Media Count : 25

Abstract : This paper presents an overview of the complex unsteady vortical flows that comprise the wakes of rotary-wing aircraft; of the effects these tangled vortical structures have on the performance, noise, and vibration; and of some of the recent attempts to measure, predict, and control the phenomena. The main points are illustrated with a number of examples from the recent literature and technical conferences. (AN)

Descriptors :   *VORTICES, *WAKE, *UNSTEADY FLOW, MATHEMATICAL MODELS, VIBRATION, EXPERIMENTAL DATA, AIR FLOW, COMPUTATIONAL FLUID DYNAMICS, ROTOR BLADES(ROTARY WINGS), FLOW VISUALIZATION, FLOW FIELDS, HELICOPTERS, AERODYNAMIC FORCES, FLAPS(CONTROL SURFACES), FLOW NOISE, FLIGHT MANEUVERS, WING BODY CONFIGURATIONS, PRESSURE DISTRIBUTION, INCOMPRESSIBLE FLOW, ROTARY WING AIRCRAFT, GAS SURFACE INTERACTIONS, HOVERING, BLADE TIPS.

Subject Categories : Aerodynamics
      Fluid Mechanics
      Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE