GYROSCOPIC EFFECT IN BALL BEARINGS OF FUZE ARMING VANE
NAVAL ORDNANCE LAB WHITE OAK MD
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The rotating section of a fuze armed by a vane spinning in a windstream due to free fall was variously mounted with steel ball bearings, nylon ball bearings, and teflon O-rings. Wind tunnel tests were run and theoretical analyses made to determine the rise time and the steady state speed of the vane as a function of the air speed. An expression for the steady state velocity of the vane when mounted with ball bearings was developed which showed that gyroscopic action of the balls determined the maximum angular velocity of the vane the theoretical results are in good agreement with experimental data.
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