Design, Fabrication, and Demonstration of a Miniaturized Tip Clearance Measuring Device

Abstract

This report describes the design, fabrication, and demonstration of a miniaturized turbine blade tip clearance measurement system for use with small gas turbine engines during engine operation. This system was originated by Pratt and Whitney Aircraft and uses laser light that is focused on the blade tips. The light reflected from the blade tips is imaged onto an output device. The relationship between the change in tip clearance and the change in position of the output light spot provides a direct indication of tip clearance.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1974
Accession Number
AD0787318

Entities

People

  • J. C. Prosser
  • J. R. Hildebrand
  • M. J. Ford

Organizations

  • Pratt & Whitney

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Antireflection Coatings
  • Blade Tips
  • Clearances
  • Design Criteria
  • Engines
  • Fabrication
  • Fiber Optics
  • Gas Turbines
  • Generators
  • High Temperature
  • Light Sources
  • Measurement
  • Optical Materials
  • Recording Systems
  • Test Fixtures
  • Turbines

Readers

  • Aerodynamics.
  • Aerosol Science/Aerosol Physics
  • Software Engineering

Technology Areas

  • Directed Energy