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

4.3.11              Maintainability..................................................................................................... 14

4.3.11.1           Maximum maintenance time................................................................................ 15

4.3.11.2           Ejector system maintainability............................................................................. 15

4.3.11.2.1        Pyrotechnic BRU ................................................................................................. 15

4.3.11.2.2        Pneumatic or hydraulic BRU............................................................................... 15

4.3.11.2.2.1     Pressure vessel ..................................................................................................... 15

4.3.11.2.2.2     Removable pressure vessel .................................................................................. 15

4.3.11.3           Ejector system component maintenance time...................................................... 16

4.3.11.3.1        Pyrotechnic ejection............................................................................................. 16

4.3.11.3.2        Pneumatic or hydraulic ejection........................................................................... 16

4.3.11.4           Maintenance plan................................................................................................. 16

4.3.11.4.1        Organizational maintenance................................................................................. 16

4.3.11.4.1.1     Organizational maintenance tasks........................................................................ 16

4.3.11.4.2        Intermediate maintenance .................................................................................... 17

4.3.11.4.2.1     Intermediate maintenance tasks ........................................................................... 17

4.4                   Interchangeability ................................................................................................ 17

4.5                   Identification and marking................................................................................... 17

5.         DETAILED REQUIREMENTS...................................................................................... 17

5.1                   Loading of stores.................................................................................................. 17

5.1.1                Support Equipment (SE)...................................................................................... 18

5.1.2                Store vertical support ........................................................................................... 18

5.1.2.1             Vertical support latching...................................................................................... 18

5.1.2.2             Vertical support latching security ........................................................................ 22

5.1.3                Store sensing ........................................................................................................ 22

5.1.3.1             Store sensing failure mode................................................................................... 22

5.1.4                Fuzing and arming control................................................................................... 22

5.1.4.1             Mechanical fuze AUs........................................................................................... 22

5.1.4.2             Electrical fuze AU................................................................................................ 23

5.1.4.3             Positive arming attachment.................................................................................. 23

5.1.5                Swaybraces .......................................................................................................... 24

5.1.6                Safety interlock .................................................................................................... 24

5.1.6.1             Safety interlock status.......................................................................................... 24

5.1.6.2             Interrupt removal ................................................................................................. 25

5.1.6.3             Alternative interrupt removal............................................................................... 25

5.1.6.4             Safety interlock ground operation........................................................................ 25

5.1.6.5             Safety interlock control........................................................................................ 25

5.1.6.6             Safety interlock drive mechanism........................................................................ 26

5.1.6.7             Safety interlock override system.......................................................................... 26

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