Method based on measurement of interruptions of laser beam provides information on deflections of blades of airplane propeller or unducted turbofan. Bends and twists deduced from timing of laser-beam shadows. Provides for nonintrusive measurement in wind tunnel or on open test stand.
Measuring Deflections Of Propeller And Fan Blades
NASA Tech Briefs ; 17 , 1
1993-01-01
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Englisch