Downloaded from https://www.everyspec.com MIL-STD-810C D. Two test items may be used. Drop one test item on each face and corner (total of 14 drops). Drop a second test item on each edge (total of 12 drops). 3.5 Procedure 111, crash safety test. This procedure shall be used to determine the structural integrity of equipment mounting means. The test item or dummy load shall be attached by its normal points of attachment. The test item or dummy load shall be subjected to two shocks in each direction along three mutually perpendicular axes of the equipment (total of 12 shocks).
The shock pulse shape shall be in accordance with either figure S16.2-1 or 516.2-2, of amplitude a or b and time duration c or d, as specified. There shall be no failure of the mounting attachment and the test item or dummy load shall remain in place and not create a hazard. However,“bendingand distortion shall be permitted. 3.6 Procedure IV, high intensity test. This procedure shall be used where high acceleration, short time duration shock excitation results from hand- li~g, stage ignition, separation, re-entry, and high velocity aerodynamic buffeting..experiencedby missiles and high performance weapon systems.
TWO shocks shall be applied to the test item in each direction along each of three mutually perpendicular axes (total of 12 shocks). The shock pulse shape shall be in accordance with either figure 516.2-1 or 516.2-2, of amplitude a or b and time duration c or d, as specified. The test item shall be operating during the test if required by the equipment specifica- tion. At the conclusion of the test, the test item shall be operated and inspected and results obtained in accordance with General Requirements, 3.2. 3.7 Procedure V, bench handling test. This procedure shall be used to determine the ability of equipment to withstand the shock encountered during servicing.
The chassis and front panel assembly shall be removed from its enclosure, as for servicing, and placed in a suitable position for servicing on a horizontal, solid wooden bench top at least 1-5/8 inches thick. The test shall be performed, as follows, in a manner simulating shocks liable to occur during servicing. Step 1 - Using one edge,as a pivot, lift the opposite edge of the chassis until one of the following conditions occurs (whicheveroccurs first): a. The chassis forms an angle of 45 degrees with the horizontal bench top. b. The lifted edge of the chassis has been raised 4 inches above the horizontal bench ,top. 516.2-5 METHOD 516.2