Design, Fabrication, and Demonstration of a Miniaturized Tip Clearance Measuring Device
- 1 September 1974
- report
- Published by Defense Technical Information Center (DTIC)
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.Keywords
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