Apparatus and method for predicting fore/aft forces generated by tires
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United States of America Patent
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-
Mar 21, 1989
Grant Date -
N/A
app pub date -
Oct 17, 1986
filing date -
Oct 17, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for predicting fore-aft translations of tires. An inflated tire is rotated at a nominally constant angular velocity against a freely rotatable rigid loadwheel under a radial load. Changes in the instantaneous effective radius of the tire as it rolls give rise to fore/aft forces which tend to translate the tire alternately forward, toward the direction of travel and aft, toward the opposite direction. The tendency of the tire to so translate is predicted by measuring variations in effective radius or a parameter correlated thereto such as changes in the motion of the tread surface of the tire or the loadwheel relative to the angular speed of the tire.
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