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A Full-scale Investigation of the Effect of Several Factors on the Shimmy of Cantering WheelsA full-scale investigation has been conducted to determine the effect of various factors on the shimmy of castering wheels. The factors considered were the geometric arrangement, the tire types, the variations of load, the spindle moment of inertia, and the tire inflation. A comparison of the results of the present investigation with those calculated from existing theory was made. The constants needed in the calculations to determine the damping required for a castering wheel were measured. The results indicate that solid friction appears to be impracticable as the sole damping agent for castering nose wheels on large airplanes. Also it was concluded that the existing theory is adequate for calculating the damping required to prevent shimmy. The caster angle and the spindle moment of inertia were found to influence the solid friction required to prevent shimmy. The effect of variations in the type and the pressure of the tire was insignificant.
Document ID
19930081575
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Howard, Walter B , Jr
Date Acquired
September 6, 2013
Publication Date
April 1, 1940
Report/Patent Number
NACA-TN-760
Accession Number
93R10865
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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