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Propeller Tip Flutter

Description: The present report is limited to a case of tip flutter recognized by experience as being important. It is the case where outside interferences force vibrations upon the propeller. Such interferences may be set up by the engine, or they may be the result of an unsymmetrical field of flow.
Date: September 1932
Creator: Liebers, Fritz
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Resonance Vibrations of Aircraft Propellers

Description: On the basis of the consideration of various possible kinds of propeller vibrations, the resonance vibrations caused by unequal impacts of the propeller blades appear to be the most important. Their theoretical investigation is made by separate analysis of torsional and bending vibrations. This method is justified by the very great difference in the two natural frequencies of aircraft propeller blades. The calculated data are illustrated by practical examples.
Date: February 1932
Creator: Liebers, Fritz
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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