Final Report of the Type III Mobility Vibration Profile

There is an existing void in current test specifications for vibration design and laboratory test schedules. Present standards contain specifications for a common carrier environment, which is representative of operation in commercial vehicles over highways (only), and the composite wheeled vehicle specifications, which represent operation over extreme terrain at worst-case speeds. The proposed series of tests subjected the test items to highway, improved surface, and cross-country terrains, and produced results which lie between the existing standards. A series of seven different mobile shelter/prime mover configurations was subjected to the Type III mobility requirements of MIL-M-8090F in order to gather vibration data. Data were collected using selected courses at the Munson Test Area (MTA) and Perryman Test Area (PTA) at Aberdeen Proving Ground (APG), Maryland. Test specifications were developed for the shelter input (attachment to prime mover/mobilizer), the walls, and the floor of each shelter combination and master input; wall and floor specifications were developed by combining data from all shelter combinations. Original contains color plates: All DTIC reproductions will be in black and white.