Convertible Fan/Shaft Engines Incorporating Variable-Pitch Fan Rotors

Abstract

The report presents the results of an analytic study of a convertible turbofan/turboshaft engine embodying a variable-pitch fan rotor. By moving the fan blades into minimum pitch, their power absorption is reduced to about 15% of the power available from the low pressure turbine; thus, the remaining power is available as external shaft power. A novel method of variable-pitch fan blade attachment was devised. Estimated performance and weight of the engine are presented.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1969
Accession Number
AD0859275

Entities

People

  • Denis P. Edkins

Organizations

  • General Electric

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircraft Engines
  • Aircrafts
  • Airframes
  • Army Aviation
  • Bearings
  • Boundary Layer
  • Compressors
  • Computer Programs
  • Computer Simulations
  • Control Systems
  • Friction
  • Geometry
  • Pressure Distribution
  • Sea Level
  • Turbines
  • Turbofan Engines
  • Turboshaft Engines

Readers

  • Aerospace Engineering
  • Calculus or Mathematical Analysis