MIL-DTL-27443F (USAF)
3.3 Construction. The pallet shall be constructed so that no parts shall work loose in service. It shall
be built to withstand the strains, jars, vibration, and other conditions incident to shipping, storage,
installation, and service (see 6.1). The pallet shall be constructed as an integral unit and shall not require
assembly or attachment of separate parts during operational use. The pallet shall be constructed and
assembled according to requirements herein and applicable drawing 7031843 or 7133047. The top
and bottom skins shall each be 1 continuous sheet (see 4.5.1).
3.3.1 Reliability. The pallet shall be constructed as specified herein (see 4.5.1) to assure optimum
service life under all service conditions specified herein, and shall be acceptably demonstrated during the
testing specified herein. The pallet shall be designed for life of a minimum of 10 years.
3.3.2 Core layout. Core layout shall be such that the bond line between the core and rails shall include
no gap that exceeds 0.020 inch in width and the total accumulation of all core to rail gaps shall not
exceed 8 inches in length. No single gap shall exceed 4 inches in length. Allowable gaps shall be filled
to their depths with the adhesive specified (see 3.2.3) and shims shall not be inserted between the core
and the rails. Wedges may be inserted between the core modules and no part of the core shall be
movable (see 4.5.9 d., 4.5.11).
3.3.3 Load Center of Gravity. The vertical center-of-gravity shall be 48 inches above the pallet surface
of the Type I pallet and 36 inches above the pallet surface of the Type II pallet. The loads shall be
uniformly distributed for each type of pallet.
3.3.4 Load configuration. The load for each pallet shall be rectangular cubes (boxes). The cubes for
Type I pallets shall be approximately 20 inches wide by 20 inches long by 12 inches high. The cubes
for the Type II pallets shall be approximately 24 inches wide by 20 inches long by 12 inches high. All
cubes shall be free to move relative to adjacent cubes.
3.3.5 Edge structure. The bonded sandwich construction shall be fastened to the edge structure as
specified (see 3.3.2) and applicable drawings. The top and bottom skins shall be flush to not more than
0.020 inch below flush with the edge structure as shown on applicable drawings. Mitered corners of
the rails shall be reinforced to withstand the tests (see 4.5.5.1 and 4.5.3.1).
3.4 Performance.
3.4.1 Bond continuity. Each pallet skin is bonded to 4 side rails and the balsa wood core. This bond
shall be continuous and without voids (see 4.5.2).
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