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

w/CHANGE 1

c. A means other than removal of the breech cap or movement of the electrical connection to indicate cartridge installation.

d. A positive retention feature shall be provided to maintain cartridge containers/breech caps in a secure position during flight.

4.3.11.2.2 Pneumatic or hydraulic BRU.

4.3.11.2.2.1 Pressure vessel. If a pressure vessel is used as the release/ejection energy source, its design shall provide for:

a. A visual indication of the internal pressure level (not dependent on electrical power availability).

b. A means to manually relieve the vessel internal pressure.

4.3.11.2.2.2 Removable pressure vessel. If a removable pressure vessel is used as the release/ejection energy source, its design, in addition to the previous requirements, shall comply with the following requirements:

a. It shall be possible to install/remove the vessel without using special tools.

b. It shall be possible to install/remove the vessel with the store fully latched to the BRU. c. It shall be possible to install/remove the vessel regardless of its pressurization status.

d. In the case where the above requirement c is not fulfilled, it shall not be possible to install/remove the vessel unless its internal pressure has been relieved.

4.3.11.3 Ejector system component maintenance time.

4.3.11.3.1 Pyrotechnic ejection. The total servicing time for the cleaning of designated BRU ejector components, related to firing, should be 0.33 man-hour (20 man-minutes) maximum (see 4.3.11.4.1.1). If cartridges are employed, the maximum time for removal or installation of cartridges shall be not greater than 2 man-minutes per cartridge. Items requiring only periodic replacement, such as screens, filters, and/or desiccant canisters are not considered within this cleaning time constraint, but shall be removable/replaceable in 0.50 man-hour (30 man-minutes) maximum.

4.3.11.3.2 Pneumatic or hydraulic ejection. The time needed to charge a pressure vessel shall be stated by the procuring activity, differentiating between: