Estimation of Helicopter Performance Using a Program Based on Blade Element Analysis.

Abstract

A convenient method of predicting helicopter performance is presented, which is applicable up to speeds corresponding to an advance ratio of 0.3, for any conventional helicopter (ie. single main rotor) with flapping blades. This method uses a computer program, 'POLAR', which is based on a blade-element analysis assuming uniform induced flow. Program 'POLAR' can be employed for most steady flight conditions and is not subject to limitations imposed by the use of performance tables and charts. Details of blade operating conditions may be estimated at specified points on the rotor disc. The structure of the program and examples of its use are given. Comparisons of estimates obtained using 'POLAR', with other performance methods are also included. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1984
Accession Number
ADA146341

Entities

People

  • A. M. Arney

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Airframes
  • Airspeed
  • Computer Programs
  • Engineering
  • Flight Paths
  • Fourier Series
  • Fuel Consumption
  • Ground Effect
  • Level Flight
  • Mach Number
  • Momentum
  • Plastic Explosives
  • Polyethylene Glycols
  • Power
  • Sea Level

Fields of Study

  • Physics

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Aerodynamics.
  • Computer Science.