COMPRESSIBILITY EFFECTS ON OSCILLATING ROTOR BLADES IN HOVERING FLIGHT,

Abstract

A theory is developed and used for determining the influence of compressibility on the aerodynamic forces acting on helicopter rotor blades when oscillating in hovering flight. The usual two-dimensional mathematical model of the flow is adopted in which a section of the reference rotor blade and its helical wake is replaced by an airfoil with a straight wake and a system of regularly spaced infinite wakes below, the amount of spacing depending on the downward flow induced by the rotor and the number of blades. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1968
Accession Number
AD0678624

Entities

People

  • B. M. Rao
  • W. P. Jones

Organizations

  • Texas A&M University

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aerodynamic Forces
  • Aircrafts
  • Airfoils
  • Airframes
  • Compressive Properties
  • Flight
  • Helicopter Rotors
  • Helicopters
  • Hovering
  • Mathematical Models
  • Models
  • Physical Properties
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Aerodynamics.

Technology Areas

  • Space
  • Space - Spacecraft Maneuvers