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|  MIL-T-81527B(AS)
shall not exceed 16 inches by 24 inches and shall conform to the shape of
the Rear Frame overhead structure.
3.4.1.6.2.6 Pallet Shaft Assembly.
3.4.1.6.2.6. 1 Function.
The Pallet Shaft Assembly shall serve to support
the three pallets of the Receiver Section of the AN/APG-59 Radar Set Bar-
rel Assembly for service and adjustment.
The Pallet Shaft Assembly shall
also distribute cooling air to these pallets through a central shaft and
associated manifolds.
3.4.1.6.2.6.2 Form Factor.
The Pallet Shaft Assembly shall consist of a
rotable hollow shaft, nominal 4-3/4 inches in diameter by 44 inches high.
The shaft shall rest on load-bearing surface built into the Base Structure
below the Bench Top and shall be supported by overhead structure of the
Rear Frame.
The shaft shall contain fittings to support three pallets of the
The three pallets shall be mount-
AN/APG-59 Radar Set Barrel Assembly.
able in normal vertical position on bracket structures 90 degrees apart about
the shaft.
The fourth side of the shaft assembly shall be left open. Each
Pallet shall be attached to the bracket structure by means of vertical hinges
to permit access to the rear of the pallets for servicing and adjustment. Latches
shall be provided for each pallet location to lock the pallets in place to the
bracket structures when access to the rear of the pallets is not required.
Means to lock the Pallet Shaft Assembly into place shall be provided on the
I
Rear Frame overhead structure. Means shall be provided to lock the pal-
lets in the open position for stability during servicing by means of the lower
and upper stow brackets installed on the Base Structure and on the Rear
Frame overhead structure respectively.
The Pallet Shaft Assembly shall be used
3.4.1.6.2.6.3 Air Distributions
The lower end of the
as a manifold to distribute cooling air to the pallets.
shaft shall be open on the bottom and shall be connected through a rotating air
duct to the plenum chamber of the Blower Assembly. The shaft shall be
closed at the top to prevent escape of cooling air. The lower bracket
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