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.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43 - 44 - 45 - 46 - 47 - 48 - 49 - 50 - 51 - 52

MIL-STD-2088B

w/CHANGE 1

5.2.10.4 Cartridge actuated device (CAD) override control. If used, this discrete signal to the BRU shall be used to control the application of energy to the CAD actuated safety interlock override control. This electrical energy pulse shall be as specified in 5.1.7.2.

5.2.11 Vertical support status. This signal from the BRU shall confirm the opening of the BRU vertical supports. This discrete signal is a ground/open signal which changes state only when both fore and aft vertical supports have been opened. Nominal current sink capability of the devices used for this function shall be 250 milliamperes.

5.2.12 BRU presence status. This signal from the BRU shall indicate the presence of the BRU on the aircraft. This discrete signal is a ground signal used to confirm that the BRU is attached to the aircraft. Nominal current sink capability shall be 250 milliamperes.

5.2.13 Store sensing signal. This signal from the BRU shall indicate that a store is present on the BRU. This signal shall be a ground/open and shall be capable of sinking 250 milli- amperes. Store sensing shall ensure that a store retained by one vertical support shall be sensed as a store present.

5.2.14 BRU power/master arm. This signal to the BRU shall be available to supply power to those mechanisms or devices requiring currents higher than those available for listed command functions such as higher current devices which will use the commands listed to activate a power switching device within the BRU to supply the current for the function. This function shall operate from a 28 VDC/open discrete.

6. NOTES

(This section contains information of a general or explanatory nature which may be helpful, but is not mandatory.)

6.1 Intended use. This standard is intended to be used in establishing general criteria for the design and development of a Bomb Rack Unit for carriage and powered ejection or gravity

release of airborne stores (excluding air-to-air missiles) on single lug, 14- or 30-inch suspensions from fixed and rotary wing aircraft, manned and unmanned. It is not intended to be applicable to Small Diameter Bombs (SDB) or practice bombs.

6.2 Subject term (key word) listing.

Cartridges

Ejector racks

Electrical fuze arming unit

Gravity release

Hydraulic ejection