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CONTACTLESS METHOD OF MEASURING AMPLITUDE AND FREQUENCY OF VIBRATIONS OF BLADES OF REVOLVING TURBINES, FOR EXAMPLE, GAS ONES,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
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
APPROVED FOR PUBLIC RELEASE