Analytical Aircraft Landing Gear Soil Interaction. Phase III. Rolling Single Wheel Analytical Sinkage Prediction Technique and Computer Program.
Interim rept. 17 Nov 69-17 Jun 70,
DAYTON UNIV OH RESEARCH INST
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The drag force on aircraft landing gears operating on semi- and unprepared soil runways depends on the sinkage of the tires into the soil medium. This investigation was concerned with an analytical technique for predicting the sinkage of a rolling single wheel. The tire-soil interaction was simulated by a moving surface contact pressure distribution traveling at the aircraft ground forward velocity. The soil was assumed to be an elastic-perfectly plastic medium. The lumped parameter iteration technique was used for obtaining the solution of the three-dimensional dynamic boundary value problem, and a computer program was developed. A test case evaluation was performed. The surface deflections, constant surface displacement contours, and movement paths of selected soil particles are presented. Author
- Soil Mechanics