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

temperature extremes, fuel, hydraulic and lubricating oil, grease, and salt spray. Protection shall be provided for those non-metallic components that can endanger or jeopardize the function of the BRU due to strength degradation associated with abrasion, load or exposure-induced deterioration.

4.2.1.2.1 Reinforced plastic and structural composites. The use of structural composites and/or plastic, if required, shall be as specified for Type-I materials in L-P-383 or meet the applicable requirements for fibrous composite construction in JSSG-2006. MIL-HDBK-17/1 shall be used where applicable for material and fabrication processing guidelines. The material and configuration design shall be of such character and quality as to be capable of withstanding all service conditions, as specified herein, without degrading the performance of other components of the BRU or surrounding materials.

4.2.1.3 Lubrication. Lubricants and lubrication practices shall conform to the requirements of MIL-HDBK-838 and MIL-PRF-46010. Lubricants shall function satisfactorily throughout

the temperature range from -70 to +200 °F. Choice of lubricants shall: (a) be compatible with non-metallic components, (b) not damage finishes adjacent to location of lubricant application, and (c) eliminate the need for frequent lubrication by field maintenance activities. If lubrication is required, choice of lubricants and practices shall be such that lubrication need be accomplished only during post deployment intermediate level maintenance (see 4.3.11.4.2).

4.2.1.4 Hydraulic fluids. Hydraulic fluids used in the BRU shall be in accordance with

MIL-PRF-83282.

4.2.1.5 Fungus-proof materials. The materials used in the BRU shall be non-nutrients for fungi.

4.2.1.6 Potting compounds. Potting compounds shall comply with MIL-HDBK-454, Guideline 47, Encapsulation and Embedment (Potting).

4.2.1.7 Corrosion protection. Corrosion protection practices employed shall be in accordance with the MIL-STD-7179 requirements for exterior surfaces. Design shall make use of materials which preclude corrosion susceptibility under service environmental conditions without a requirement for hermetic sealing. Materials and processes for corrosion prevention shall meet the requirements of MIL-HDBK-1568.

4.2.1.8 Finishes. Protective coatings and finishes shall not crack, chip, or scale during normal service, or in the herein specified extremes of environmental conditions. Surface treatments, coatings, and finishes shall conform to MIL-S-5002 or surface treatments specified herein.