CONTACTLESS METHOD OF MEASURING AMPLITUDE AND FREQUENCY OF VIBRATIONS OF BLADES OF REVOLVING TURBINES, FOR EXAMPLE, GAS ONES,

Abstract

The object of the invention is a contactless method of measuring the amplitude and frequency of the vibrations of the blades of a revolving turbine, for example, of a gas one, with the use of photoelectric pickups. Use is made of the infrared rays given off by the highly heated parts of the turbine blades. In the body of the turbine openings are made through which the flux of rays with the aid of an optical system and an optical wedge with a density changing directly proportionally in length, is projected onto the photosensitive element of the pickup the signal on the output of which is proportional to the parameters to be measured. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 19, 1965
Accession Number
AD0625792

Entities

People

  • N. A. Yashkir

Organizations

  • National Air and Space Intelligence Center

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Doppler Effect
  • Frequency
  • Frequency Shift
  • Intellectual Property
  • Inventions
  • Law
  • Patents
  • Rotor Blades (Turbomachinery)
  • Turbine Blades
  • Turbines
  • Turbomachinery
  • Vibration

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Electrical Engineering
  • Optical Physics and Photonics.