Deflection, stress, and vibration analysis of rotating propellers using holography
Abstract
A new holographic technique has been developed which allows measurement of the deflection of propeller blades while rotating. The technique requires that an axially-symmetric wavefront be directed onto both the propeller blade and a holographic plate rotating with the propeller. Some deflection results for a propeller rotating in air are presented and the technique has been shown to be feasible for propellers rotating in water.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- November 1974
- Bibcode:
- 1974STIN...7519650S
- Keywords:
-
- Deflection;
- Holography;
- Propeller Blades;
- Vibration Measurement;
- Dynamic Tests;
- Rotating Bodies;
- Stresses;
- Instrumentation and Photography