MIL-STD-1660A APPENDIX C
C.1 SCOPE
CORNERWISE-DROP (ROTATIONAL) TEST
C.1.1 Scope. The following procedure is applicable for determining the ability of unit loads to resist the
impacts of being dropped on their corners and for determining the ability of the unit load, the packaging and packing methods to provide protection to the contents when the pack is dropped on its corners. This Appendix is a
mandatory part of the standard. The information contained herein is intended for compliance. C.2 DEFINITIONS
C.2.1 Level of packing. The level of packing to be provided for any item or contents is dependent upon the handling and shipping conditions which the container, pack, or unit load may be expected to encounter. For the purpose of this standard, the levels of packing shall be defined as:
C.2.1.1 Level A. This protection level is generally considered for unit loads subjected to tactical environments and is fully defined in 4.11.1.
C.2.1.2 Level B. This protection level is generally considered for unit loads subjected to the tactical logistics cycle but not for long-term storage and is fully defined in 4.11.2.
C.3 APPARATUS
C.3.1 Cornerwise-drop test. In conducting the cornerwise-drop test, the unit load may be handled with any convenient equipment, such as a forklift truck, a hoist, or a block and tackle. A smooth, level, concrete surface (or similarly unyielding surface) shall be used in performing the cornerwise-drop test.
C.4 SPECIMEN
C.4.1 Contents. One unit load and its contents shall constitute a single specimen. The unit load shall be loaded for the test with the interior packing and the actual contents for which it was designed. If use of the actual contents
is not practical, a dummy load shall be substituted to simulate such contents in weight, rigidity, shape, and center of gravity, position in the unit load, and appropriately instrumented to record shock forces or deflections during the
test. The contents, or dummy load, shall be blocked, braced, and cushioned in place as for shipment. C.5 CONDITIONING OF SPECIMEN
C.5.1 Test specimen. All tests shall be conducted at room temperature (77±18 °F) except as noted below.
source: https://assist.dla.mil -- 2D5ownloaded: 2014-09-28T13:04Z Check the source to verify that this is the current version before use.
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