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

CONTENTS

PARAGRAPH                                                                                                                        PAGE

4.2.1.2             Non-metallic components ...................................................................................... 8

4.2.1.2.1          Reinforced plastic and structural composites ........................................................ 9

4.2.1.3             Lubrication............................................................................................................. 9

4.2.1.4             Hydraulic fluids ..................................................................................................... 9

4.2.1.5             Fungus-proof materials .......................................................................................... 9

4.2.1.6             Potting compounds................................................................................................. 9

4.2.1.7             Corrosion protection .............................................................................................. 9

4.2.1.8             Finishes .................................................................................................................. 9

4.2.1.8.1          Anodizing............................................................................................................. 10

4.2.1.8.2          Chemical surface treatment.................................................................................. 10

4.2.1.8.3          Plating .................................................................................................................. 10

4.2.1.9             Electrical connectors............................................................................................ 10

4.2.1.10           Wiring .................................................................................................................. 10

4.2.1.11           Soldered or brazed connections ........................................................................... 10

4.2.2                Drawings.............................................................................................................. 10

4.3                   General design requirements................................................................................ 10

4.3.1                BRU to aircraft installation.................................................................................. 10

4.3.2                Design factors of safety ....................................................................................... 10

4.3.2.1             Yield..................................................................................................................... 11

4.3.2.2             Ultimate................................................................................................................ 11

4.3.2.3             Pressure system.................................................................................................... 11

4.3.3                Structural load requirements................................................................................ 11

4.3.3.1             Take-off and landing loads .................................................................................. 11

4.3.3.2             Captive flight loads.............................................................................................. 11

4.3.3.3             Launch loads ........................................................................................................ 11

4.3.3.4             Jettison loads........................................................................................................ 11

4.3.3.5             Cyclic loads.......................................................................................................... 12

4.3.4                Stress analysis ...................................................................................................... 12

4.3.5                Service life ........................................................................................................... 12

4.3.6                Reliability............................................................................................................. 12

4.3.7                Shelf life............................................................................................................... 12

4.3.8                Interfaces.............................................................................................................. 12

4.3.8.1             BRU to aircraft interface...................................................................................... 12

4.3.8.2             BRU to store interface ......................................................................................... 12

4.3.8.3             Electrical grounding interface.............................................................................. 13

4.3.8.3.1          BRU to aircraft structure grounding .................................................................... 13

4.3.8.3.2          BRU internal ground interface............................................................................. 13

4.3.9                Human engineering.............................................................................................. 13

4.3.10              Environmental and service conditions................................................................. 14

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