Flight measurements of the vibratory bending and torsional stresses on a modified supersonic propeller for forward Mach numbers up to 0.95

Thomas C. O'Bryan
naca-tn-4342
Jun 1958


Vibratory stress measurements were obtained in flight on a modified supersonic propeller for forward Mach numbers up to 0.95. The magnitude of the vibratory bending stress was low in relation to the strength of the material throughout the flight range of the airplane. Vibratory bending stress was primarily once-per-revolution stress (1-P), with some 3-P stress evident at Mach number above 0.85

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