Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/34418
Title: An Analytical Model for Predicting Cross-Country Vehicle Performance. Appendix B, Vehicle Performance in Lateral and Longitudinal Obstacles (Vegetation). Volume II, Longitudinal Obstacles
Authors: Blackmon, Claude A.
Randolph, Donald D.
Mobility and Environmental Systems Laboratory (U.S.)
Keywords: Obstacles (Military science)
Vehicles, Military--Testing
Mathematical models
Publisher: U.S. Army Engineer Waterways Experiment Station
Series/Report no.: Technical Report (U.S. Army Engineer Waterways Experiment Station);no. 3-783 app.B v.2
Abstract: A total of 372 tests were conducted with one tracked and one wheeled vehicle at the NASA Marshall Space Flight Center, Miss., Eglin Air Force Base, Fla., Fran Buri, Thailand, and Khon Kaen, Thailand. The general purpose of these tests was to obtain data relating characteristics of longitudinal obstacles to vehicle performance in terms suitable for use in developing that portion of the analytical model for cross-country performance. The specific purposes were (a) to determine the maximum horizontal force and total work required to override single standing trees of a range of sizes at various speeds and pushbar heights and ( b) to determine average horizontal force and total work required to override trees in multiple array. Empirical relations are presented to support the conclusions that pushbar force required to fail trees singly and in multiple array, work required to fail trees singly and in multiple array, and work required to override a single standing tree may be predicted from stern diameter( s) . A method is suggested for predicting work required to override trees in multiple array. The results of the tree-felling tests in the Tunguska meteorite area were confirmed, with a single exception noted, and discussed. It is recommended that additional testing be done in areas of soft soil to strength on uprooting, and in grass and brush of small areas vegetation on speed.
Description: Technical Report
Gov't Doc #: Technical Report No. 3-783 Appendix B Volume 2
URI: https://hdl.handle.net/11681/34418
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