Comparison of the Ride and Mobility Characteristics of Selected Commercial 1/4- to 3/4-Ton Vehicles and the Military M151A2 Utility Truck
Final rept. Apr-Nov 1975
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS
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A study was conducted to a obtain experimental ride, shock, and speed data for 10 commercial 14- to 34-ton vehicles with 800-lb payloads and with rated payloads b use the experimental data to develop ride and shock relations for use in the Army Mobility Model AMM c compare the relative ride performances of the candidate commercial vehicles with that of the military M151A2 utility truck and d use the experimental ride and shock data and the measured traverse speed data to validate the AMM in relation to these vehicles. Ride, shock, and traverse tests were conducted with each vehicle configuration at Fort Hood, Texas. These data were used to develop ride and shock relations for each vehicle and load configuration. Speed limitations due to steering and handling were identified and related to surface roughness for each configuration. Vehicle configurations were ranked according to relative ride quality, cargo responses, obstacle shock, traverse speed, and absorbed energy per mile of traverse. Traverse speed predicted with the AMM was compared to the measured traverse speed for each configuration. AMM was determined to be adequate for predicting speed performance on the short test traverse, provided the maximum control speed due to steering- and handling-surface roughness relation is used in predicting speed in place of the 6-watt driver absorbed power limit, which is more appropriate for missions of longer duration. Appendix A contains the detailed dynamics data for ride and obstacle tests, and Appendix B contains the detailed speed and dynamics data for the traverse tests.
- Surface Transportation and Equipment