The Effects of Parameter Variation on Helicopter Performance.

Abstract

Six different cases of helicopter main rotor parameter variation are considered for each of three different forward velocities - hover, sixty knots and one-hundred fifty knots - in order to consider the effects of the changes on the total power required for the helicopter. The six cases included variations in rotor radius, rotor chord, solidity disc area, rotational velocity and tip velocity. Although strong positive or negative effects may be observed at some velocities, these trends are generally not the same at all velocities, indicating that trade-offs must be made in the design process in order to optimize the level flight performance. (Theses)

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1985
Accession Number
ADA156027

Entities

People

  • C. K. Kim

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Air Force
  • Aircrafts
  • Airspeed
  • Coefficients
  • Equations
  • Flight
  • Fuselages
  • Helicopters
  • Level Flight
  • Parasites
  • Power
  • Schools
  • Sea Level
  • Standards
  • Tail Rotors
  • Vehicles

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Mathematics or Statistics