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|Title:||Mobility assessment of the ROLAND Wheeled Vehicle System. Report 2, Mobility assessment using the army mobility model|
|Authors:||United States. Army. Missile Command.|
Randolph, Donald D.
Off- road mobility
Army Mobility Model (AMM)
|Publisher:||Geotechnical Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||Technical report (U.S. Army Engineer Waterways Experiment Station) ; GL-82-12 rept. 2.|
Abstract: The study evaluates the relative mobility performance of a primary candidate ROLAND missile carrier for the Rapid Deployment Force (RDF) based on the M812A1 , 6x6 truck chassis with 11.00 X 20 dual tires, an alternative on 14 .00 X 20 dual tires, and a third assuming use of the M977, 8x8 , 10-ton truck chassis with 16.00 R20 tires. The standard M813A1, 5-ton, 6x6 car go truck and M109A1 self propelled howitzer (tracked) are included for reference. Performances are assessed in study terrains typical of the central highlands in the Federal Republic of Germany, of northwest Jordan, and of the mountains in southwest Iran, in dry, wet, wet-wet slippery, snow and sand surface conditions, as appropriate. The evaluations use on-road and off-road predictions from the Army Mobility Hodel (AMM) and linear feature crossing predictions from the SWIMCRIT/WACROSS water-crossing model in conjunction with suitable digital mobility terrain data bases. Vehicles in the study are compared in each study terrain and condition primarily in terms of (a) percent of area in which each is immobile (NOGO), and mean speeds achievable in the 50 percent and 80 percent of the area offering the least impedance to the vehicle (V50 and V80); (b) percent of total trail distance which is NOGO, and mean speeds on primary roads, on secondary roads, and on trails, and (c) rating speeds for operations at a special level of mobility or mission profile proposed by the U. S. Army Missile Command as most appropriate for the carrier. Excursions are made to examine the effect on performance statistics, first including a requirement for side slope operation in all terrain situations, and second of using ride at the commander's station rather than at the driver's station as a possible speed-limiting factor. Appendices identify study terrains, list values of vehicle parameters used in AMM, present complete speed profile data and reasons for NOGO 's, and tabulate gap-crossing times and rating speeds for five standard levels of mobility.
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