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

k.  Allowable leakage rate of the pressure vessel shall be specified by the procuring activity. l.  Any leakage shall not result in pressurization downstream of the pressure vessel.

FIGURE 5.  Initiation circuits to activate redundant energy source control devices.

5.1.7.3.1  Pneumatic interface.  The pressure vessel charging connection shall be located to enable replenishment when the vessel is installed on the pylon/BRU or aircraft, and shall be compatible with ground support equipment as specified by the procuring activity.

5.1.7.3.2  Pneumatic activated BRUs with removable energy source.  A pneumatic activated BRU may be powered by a removable energy source.  This vessel may directly interface to the BRU or may be at a remote location in the aircraft and interface to the BRU through appropriate plumbing.

5.1.7.4  Ejection force.  Ejection force shall be applied to a store in such a manner as to provide adequate store velocity, pitch attitude, and pitch rate to ensure safe store separation from the aircraft.  Unless otherwise specified by the procuring activity, the maximum ejection force applied to a store by the BRU shall be not greater than 22,500 pounds.  If multiple ejector pistons are used, the maximum ejection force shall be distributed between the pistons to achieve the desired pitch control.  The pressure applied on a store shall be not greater than 15,000 psi.  If

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