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| MIL-T-18232B(AS)
3.10.1
DESCRIPTION. - The fuel system shall include tanks, plumbing,
functional equipment, arrangement necessary for required fuel
feed to the engine, and fuel transfer system. The fuel system shall be in accord-
ance with Specification MIL-F-17874. (For target protection against fire see 3.1.26).
3.10.10.2
FUEL TANKS (FIXED). - Fuel tanks shall be of the the required
by the detail specification. All metal and nonmetallic tanks
(except integral) shall be in accordance with Specification MIL-T-6396. Integral
fuel tanks shall be in accordance with the following:
(1) Integral tanks shall normally be of clad aluminum alloy con-
struction. Where it is not practicable to have internal tank
surfaces so clad, they shall be protected against corrosion by means approved by
NAVAIR.
(2) Closed section stiffeners shall not be used inside integral
fuel tanks. Stiffeners shall not be continuous through fuel-
tight bulkheads unless the compartments are intended to contain fuel.
(3) Since rows of rivets, screws, or bolts shall not be used in
fuel-tight joints if the thickness of either piece of material
to be joined is less than 0.125 inch
(4) Water and sediment shall drain to the lowest point in the
tank with the target on handling truck or launching device.
(5) The tanks shall be capable of being sealed and maintained
fuel-tight throughout in service.
FUEL TANK CAPACITY. - The usable capacity of fuel tanks shall
3.10.10.2.l
be sufficient for the missions of the target and shall be as
required by the detail specification. The usable capacity shall be the quantity
of fuel which can be placed in the tanks when the target is on handling truck or
launching device. In determining tank capacities, allowance shall be made for a
3% expansion space. (For definition of unusable fuel, see 6.4.5)
FUEL TANK INSTALLATION. - All fuel tanks shall be securely
3.10.10.2.2
anchored to the target structure to prevent movement of the
tank in any direction with respect to the target. Fuel tanks shall be removed Or
replaced with minimum disassembly of the target structure. It shall not be
necessary to jack the target to maintain alignment of the fuselage or wings for
fuel cell replacement. It is desired that it is possible to remove and replace any
fuel tank without disturbing the remaining tanks or major components of the
structure.
PIPING AND FITTINGS. - Piping and fittings, and their installa-
3.10.10.3
tion shall be in accordance with Specification MIL-I-18802.
AN or MS standard fittings shall be used unless other fittings are approved for
use by NAVAIR.
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