MIL-STD-2088 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

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augmentation, gun, electronic-countermeasure, data link), multiple rack, target, and other similar items.

3.2  Bomb Rack Unit (BRU).  Suspension equipment used for carrying aircraft store(s) that incorporates a method of separating the aircraft store from the aircraft at the time of commanded release.

3.3  Burst pressure.  Design test pressure aimed to verify the structural integrity of the pressure system.  Permanent deformation and leakage are permitted when burst pressure is applied, but no sudden ruptures or detachment of parts are allowed.

3.4.  Ejections.  The number of powered store releases or separations.

3.5  Flight hours.  The number of hours accumulated in the airborne condition.

3.6  Gravity release.  The mode wherein an aircraft store is intentionally separated from aircraft suspension and release equipment and the applied separation force is the force of gravity only.

3.7   Latch.  Those mechanisms that engage the BRU vertical supports to retain the store.

3.8   Loading.  An operation that installs aircraft stores on the aircraft.

3.9  Operating cycles.  The number of store loading/off-loading events, including manual.

3.10  Operating hours.  The number of hours accumulated in a status implying a degree of stress or an active operating condition (i.e. store restraint for mechanical components, generation of/being subjected to electric or electromechanical forces for electrical and electromechanical components, pressurization for pneumatic or hydraulic components, etc.).

3.11  Pressure vessel.  A storage tank or container that has been designed to operate with a liquid (e.g. hydraulic fluid) or gas (e.g. air) under pressure greater than atmospheric pressure.

3.12  Primary release.  The principal provision for safe separation of stores or suspension items (or both) from the aircraft.

3.13  Proof pressure.  Design test pressure aimed to verify the functional and structural integrity of the pressure system.  Neither permanent deformation nor leakage is allowed when proof pressure is applied.

3.14  Secondary release.  The emergency provision for safe separation of stores or suspension items (or both) from the aircraft.

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