DEVELOPMENT OF A DATA ANALYSIS TECHNIQUE FOR DETERMINING THE LEVEL FLIGHT PERFORMANCE OF A HELICOPTER

Abstract

The paper reviews and expands a helicopter level flight performance data analysis procedure. The data analysis procedure presents formulae to account for rotor blade compressibility and stall effects which until recently have been largely ignored in classical rotor analyses. The initial approach for determining a helicopter's level flight power required was through a power buildup concept. This concept was modified during the report to be more compatible with the flight test environment. Flight test data of the CH-3C helicopter was used for comparing and verifying the analytic determinations. Reasonable approximations to the CH-3C flight test data were attained, although an improvement in accuracy is needed before the method can be substantiated as a valid flight test procedure. The analytic approach utilized was considered to possess the potential for arriving at a solution and further studies in this area are strongly recommended.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1970
Accession Number
AD0703719

Entities

People

  • John R. Somsel

Organizations

  • Air Force Test Center

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Aircrafts
  • Airspeed
  • Birds
  • Blade Tips
  • Climate Change
  • Compressive Properties
  • Data Analysis
  • Engineering
  • Equations
  • Flight Speeds
  • Helicopters
  • Level Flight
  • Mach Number
  • Mechanical Engineering
  • Outboard
  • Test And Evaluation

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Statistical inference.
  • Systems Analysis and Design