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Multiple Rolling Tire Sinkage and Drag Interaction Effects
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English
Abstract
A study was made of the influence of adjacent loaded areas on the performance of rolling aircraft tires on soil runways. These tire/soil interaction effects which occur in multiple tire landing gears were evaluated based on sinkage and drag. The total study consisted of four parts. Three of the parts have been completed. The fourth part, which is an experimental effort, is still in progress. The first part consisted of an evaluation of existing full scale field test data from aircraft or test carts operating with multiple tire configurations. The second part was a Dual Plate Vertical Load Test Program which yielded sinkage interaction effects from single and dual plate load tests in sand and clay. An analytical study was made in the third part using a lumped parameter iteration technique together with an elastic-plastic soil model for studying adjacent load interaction effects. The results show that definite benefits in terms of rolling drag reduction can be gained by proper use and spacing of dual and tandem tires when operating on sand and clay type soils.
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Citation
Kraft, D. and Luming, H., "Multiple Rolling Tire Sinkage and Drag Interaction Effects," SAE Technical Paper 710180, 1971, https://doi.org/10.4271/710180.Also In
References
- Westberg J. V. “Study of the Effects of Support Area Airfields on the Ground Performance of Heavy Logistics Transport Aircraft.” Douglas Aircraft Co. Inc. 1965
- Westberg J. V. “Study of the Effects of Aircraft Landing Gear Parameters on Support Area Airfield Flotation Capability.” Douglas Aircraft Co., Inc. 1965
- Richmond L. D. Brueske N. W. et al “Aircraft Dynamic Loads from Substandard Landing Sites, Part I and II.” Air Force Flight Dynamics Laboratory Wright-Patterson AFB, Ohio September 1968
- Ladd D. Ulery, H. Jr. “Aircraft Ground-Flotation Investigation Part 1-Basic Report.” Air Force Flight Dynamics Laboratory Wright-Patterson AFB, Ohio August 1967
- Freitag Dean R. “Wheels on Soft Soils, an Analysis of Existing Data.” U.S. Army Corps of Engineers 1965
- Barker J. V. L. “Sinkage of a Dual Aircraft Wheel Assembly.” Military Engineering Experimental Establishment Christ Church, England 1965
- Kraft David C. Luming Henry Hoppenjans J. Richard “Aircraft Landing Gear-Soils Interaction and Flotation Criteria, Phase II.” Air Force Flight Dynamics Laboratory Wright-Patterson AFB, Ohio 1969
- Kraft David C. Liguori Albert E. Hoppenjans J. Richard “T win-Vertical Plate Verification Tests Test Report.” University of Dayton Research Institute 1970
- Luming Henry “Multiwheel Vertical Pulse Load Analytical Sinkage Prediction Technique and Computer Program.” University of Dayton Research Institute 1970