Effect of Wake on the Performance and Stability Characteristics of Advanced Rotor Systems

Abstract

The performance parameters and stability and control drivatives for various rotor systems are considered using the wake-induced velocity distributions to compute the loading and responses of the rotor blades. The geometry of a self-deformed wake is used to compute influence coefficients which, when multiplied by the blade circulation loading, provide the distribution of the wake-induced velocities. The blade's loading and response are coupled together and iterations are carried out in the blade loads and response program until the two are compatible. Interactions of the wake with the airframe are not considered, and the flight conditions are limited to steady forward flight.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1974
Accession Number
ADA002671

Entities

People

  • Keith W. Shipman

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Aerodynamic Loading
  • Aircrafts
  • Airframes
  • Cartesian Coordinates
  • Computer Programs
  • Coordinate Systems
  • Equations
  • Flight Speeds
  • Geometry
  • Harmonic Analysis
  • Helicopter Rotors
  • Helicopters
  • Mach Number
  • Plastic Explosives
  • Tail Rotors
  • Trailing Vortices

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Engineering