Downloaded from https://www.everyspec.com MIL-STD-81OC 4 4.6.7.2 Part 2. Test items normally provided with vibration isolators shall be vibrat~accordance with 4.5.1.3 with the vibration isolators removed but including any other required holding devices. Test levels shal1 be accord- ing to curve N from figure 514.2-5. Test time schedules shall be as listed for part 2 of procedure VI as specified in table 514.2-V. 4.6.7.3 Part 3. With vibration isolators in place, proceed the same as in 4.5.2. Test levels shall be according to one specified curve AE through AP from figure 514.2-5. Test time schedules shall be as listed for part 3 of procedure VI as specified in table 514.2-V.
4.6:8 Procedure VII (Former 4.12). Equipment installed in ground launched missiles. (Isolatedequipment, tested without isolators, equipment category e.) 4.6.8.1 Part 1. Proceed the same as in 4.5.1.3. Test levels shall be according to curve N from figure 514.2-5. Test time schedules shall be as listed for part 1 of procedure VII as specified in table 514.2-V. 4.6.8.2 Part 2. Proceed the same as in 4.5.2. Test levels shall be according to curve AE from figure 514.2-5. Test time schedules shall be as specified for part 2 of procedure VII as specified in table S14.2-V. 4.6.9 Procedure VIII (Former 4.13). Equipment installed in ground vehicles (equipmentcategory f).
Proceed the same as in 4.5.1.3. Test levels shall b’eaccording to one specified curve V, W, or Y from figure 514.2-6. Test time schedules shall be as specified in procedure VIII as specified in table 4 514.2-VI. When test item resonances below 5 Hz are measured or expected the test curves shall be extended to 2 .Hz and the sweep time shall be 18 minutes (2-500-2Hz); 15 minutes [2-200-2 Hz). 4.6.10 Procedure IX (Former 4.14) 4.6.10.1 Part 1 (Former 4.14.1) DISCONTINUED 4.6.10.2 Part 2, bounce, vehicular 4.6.10.2.1 Apparatus. A package tester capable of 1 inch (double smplitude) displacement and of suitable capacity for testing mi1itary equipment.- 4.6.10.2.2 Test conditions a.
Cover the test bed of the package tester with wood, with the grain parallel to the drive chain. six-penny nails, with top of heads flush with, or face. Space nails at 6-inch intervals around all a panel of l/2-inch ply- Secure the plywood with slightly below the sur- four edges. If the dis- tance between either pair of fences is greater than .24inches, the plywood shal1 also be nailed at 3-inch intervals in a 6-inch square at the center of the test area. MSTHOD 514.2 514.2-16