Downloaded from https://www.everyspec.com MIL-STD-81.OD :19 July 1983 These durations are derived from the mileage for a typical misaionlfield transportation scenario which has been established to be 500 miles to the Forward Supply Point (FSP); 15 miles from the FSP to “theusing .Unit;and .15 miles at the using unit itself (dependent upon the type of cargo: expendable cargo, e.g. ammunition, may be hauled 15 miles and nonexpendable cargo, e.g. generators, may not be hauled at all once it reaches the using unit). Figure 514.3-23 ehowa the typical scenario and the tyPes of vehicle~,utilized most frequent1y in’the various segment~ of the scenario. .. . ;. ... .,”. ,. ,.
Two-Wheeled Trailera Two-Wheeled ... Trailers or M548 Cargo Carrier ,., ,, :, . . ,. . . . ,, FIGURE 514.3-23. Al”thoughboth trucks and two-wheeled trailers are utilized between the FSP end are the using unit”and at the using unit, the vibration levels on the trailers aitiificantly higher and .thuashould be used represent the wheeled vehicle environment, unless the test item is too large to fit in the two-wheeled trailer. In that case, the composite wheeled environmentshould be used. . . c. Test s~tuz: Mount the test item in ite transport configuration on the vibration fixture/table using restraints and tie-downs typical of those to be used during actual tran~port.
Testing should be coh~ucted.ueins all repreeentative stacking configurations and excitation should be applied through all .~ep,Teae,nta~iVe axes. The equipment ie not operated during this test. :, .... ... . . . .. ., , -, ,.. ,,,. ,. ,: .: .,.,’ f,. .’.ilSTliOD” 514.3 19 iUly 1’983 51’4.+29