Turbine Windage Torque Tests.

Abstract

Systems for producing high electrical power on demand include the use of a turbine/gas generator system. The power absorption by turbine windage is an important factor in determining the sizes of the vacuum pump and drive, if the turbine exhaust cavity is to be evacuated, and the size and quality of the vacuum isolation valve on the turbine exhaust system. Rocketdyne conducted windage torque tests on a MK15E3-2 turbine at speeds up to 30,000 RPM where torque contributions of shrouded and unshrouded wheels, single wheel, and bearing and seal power losses were determined at turbine cavity air pressure of 0.3 psia to atmospheric pressure (14.3 psia). Windage torque losses of the shrouded two-wheel system at atmospheric conditions represented about 2.6 percent of the overall rated turbine horsepower (155 versus 6,000 HP). (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1981
Accession Number
ADA098310

Entities

People

  • R. F. Sutton

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Assembly
  • Barometric Pressure
  • Data Acquisition
  • Data Analysis
  • Data Reduction
  • Engineering
  • Failure Mode And Effect Analysis
  • Generators
  • Government Procurement
  • Governments
  • Hypervelocity Flow
  • Measurement
  • Plastic Explosives
  • Pressure Measurement
  • Test Facilities
  • Turbines

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Internal Combustion Engine (ICE) Technology.