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

electrical connection shall contain socket-type contacts, and the weapon side shall contain pin- type contacts.

4.2.1.10 Wiring. All electrical wiring shall be selected and installed in accordance with

SAE-AS50881.

4.2.1.11 Soldered or brazed connections. The soldering of contacts shall be in accordance with IPC J-STD-001, Class 3. When a brazing process is used, it shall be in accordance with AWS-C3.4, 3.5, 3.6, 3.7.

4.2.2 Drawings. Drawings shall be in accordance with ASME-Y14.100.

4.3 General design requirements.

4.3.1 BRU to aircraft installation. The BRU to aircraft installation shall not require any special tools or equipment for mating and attachment.

4.3.2 Design factors of safety.

4.3.2.1 Yield. The BRU yield load shall be 1.15 times the design limit load. No permanent deformation shall be allowed after application of the yield load.

4.3.2.2 Ultimate. The BRU ultimate load shall be 1.50 times the design limit 1oad. Failure of the BRU, upon application of the ultimate load, shall be defined as:

a. Separation of the store from the BRU, or b. Separation of the BRU from the aircraft.

Other structural breakage or permanent deformation of the BRU shall not constitute failure at the ultimate load level.

4.3.2.3 Pressure system.

a. Hydraulic system. Components of the pressure system exposed to hydraulic pressure shall be designed to a minimum proof pressure of 1.15 and a minimum burst pressure of 1.5 times the operational peak pressure of that system.

b. Gas system (hot and cold). Components of the pressure system exposed to gas pressure shall be designed to a minimum proof pressure of 1.5 and a minimum burst pressure of 2.5 times the operational peak pressure of that system.