MIL-STD-1365 General Design Criteria For Handling Equipment Associated With Weapons And Related ItemsThis design standard contains the general design criteria and applicable tests for beams, bands, strongbacks, cradles, assembly stands, slings, dollies, bomb loaders, trailers and hoists used as an integral component of an ordnance handling device associated with handling weapons and related items. This standard is not intended to be used directly for acquisition of related equipment, but is to be used as the basis to prepare appropriate development specifications from which the equipment is to be designed and procured.

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MIL-STD-1365C

5.2.4 Environmental. The trailer shall be subjected to all tests described in 5.3.4 except with the following addition: Equipment designed for fording shall be capable of operating through water deep enough to submerge its running gear for at least 30 minutes with no adverse effect on equipment performance or braking characteristics. Confirmation that the requirement has been achieved shall be determined by towing the trailer at 15 mph and applying the brakes within 2 minutes after the 30-minute submersion. Any unusual towing or braking characteristics, such as yawing, skidding, or other evidence of improper operation, are cause for rejection.

5.3 Special requirements - loader.

5.3.1 Classification of requirements. Loaders designed under this specification shall be subjected to all tests listed with the exception of those tests which do not apply to the loader as designed (see 6.2). The loader test requirements shall be classified as follows:

a. Product examination (see 5.3.2).

b. Functional requirement test (see 5.3.3).

c. Environmental requirement test (see 5.3.4).

Unless otherwise specified in the applicable development specification or by the procuring activity (see 6.2), all testing to satisfy requirements shall be conducted with the rated load.

5.3.2 Product examination. The loader shall be examined for conformance with applicable loader specifications and drawings, with respect to functions and performance. The loader shall be operated with the rated load, and shall demonstrate forward and rear propulsion, steering, brakes, lift and incremental control, azimuth and incremental control, lateral, longitudinal, yaw, pitch, roll, side frame extension, and operation of electrical switches. The boom motions are to be verified to coincide with their design limitations. It shall be determined that the weight of the loader does not exceed the specified maximum. When a turning radius is specified by the applicable development specification, the turning radius shall be measured to determine conformance.

5.3.3 Functional.

5.3.3.1 Lift rate.

5.3.3.1.1 Powered. The lifting mechanism shall be capable of lifting the rated load throughout the entire lift cycle at a controllable rate up to the maximum required as specified in the applicable development specification or by the procuring activity (see 6.2).

5.3.3.1.2 Auxiliary. In case of a prime mover failure, the auxiliary lifting mechanism shall demonstrate a maximum lifting time of 1 minute per every 16 inches of travel.

5.3.3.2 Accumulator (if required). When the loader is so equipped, the accumulator shall demonstrate its capability of being charged to capacity while the power source is running at the required rpm. The time required to fully charge the accumulator shall be specified in the development specification.

5.3.3.3 Fail-safe. The loader fail-safe device for the lifting mechanism shall hold the load in any given attitude during the entire lifting operation in the event of a power failure. Compliance with this requirement shall be determined by simulating a failure in the lifting mechanism as follows. During the lift cycle, the power shall be interrupted and the lift mechanism observed to assure that it remains stationary, within the limits specified herein, in the attitude at which it was when the power was disengaged. Any movement greater than 0.5 inches per hour is unacceptable.

5.3.3.4 Boom lifting and azimuth incremental control. The boom shall be capable of both vertical and horizontal movement in 1/8-inch or less increments. Testing shall be accomplished along selected points of the vertical and horizontal paths to determine compliance.

5.3.3.5 Cycle. The loader shall be subjected to a simulated loading condition comprising all boom and manipulator head movements, thus constituting one cycle. The cycle shall be repeated 250 times with the side rails, if any, fully extended. The tests shall be run at specified loads and at normal operating speed.