MIL-STD-2088-SUP-2 Bomb Rack Unit BRU, Single Store, AircraftThis standard establishes the general guidelines and criteria for the design and development of a single store bomb rack unit BRU for carriage and release of airborne stores excluding air-to-air missiles from fixed wing and rotary wing aircraft using a single suspension point or suspension points spaced at 14 or 30 inches. This standard addresses detailed requirements for gravity non-ejected, pyrotechnic, hydraulic, and pneumatic powered BRUs. Mechanical aircraft armament interoperable interfaces are incorporated to enhance cross utilization and servicing capabilities between military aircraft and aircraft stores see 3.1 of all services of the Department of Defense DoD and North Atlantic Treaty Organization NATO nations.

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MIL-STD-2088B

visually discernible on both sides of the BRU without requiring power. The latch and latch drive shall be designed to operate with the functions of the safety interlock and its drive mechanism. The latch mechanism design shall not be susceptible to inadvertent release due to the failure of a single component. Vertical supports and their latching mechanisms shall be designed to be functionally insensitive to manufacturing and assembly tolerances, wear, normal misuse during handling, aircraft induced loads and vibration, and contamination build-up on their surfaces. The force required to latch each vertical support and engage its latching mechanism shall be not greater than 25 pounds per vertical support for Type I BRUs and 50 pounds per vertical support for Type II BRUs.

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FIGURE 1. 14-inch vertical support spacing Type I, two-piston bomb rack unit (BRU) geometric relationships.