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

ejecting stores with greater force than identified herein, the facilities shall exist in the BRU to reliably reduce the performance to the identified limits. Ejection reaction forces shall be compatible with BRU mounting and aircraft station capabilities. Store ejection force application shall be as shown on Figures 1, 2 and 3. Application of ejection forces shall not induce impact loading that will damage the BRU or store.

5.1.7.5 Separation parameters. The procuring activity shall specify for any store mass the minimum required separation velocity of the store center-of-gravity and the pitch rate at the end of the ejector stroke.

5.1.7.6 Ejector pistons. Upon loading, the ejector pistons shall automatically contact and pre-load against the top surface of the store. After store ejection, the ejector pistons shall automatically retract.

5.1.8 Safety in design. An active safety program shall be implemented and specific requirements introduced into the BRU design and development.

5.1.8.1 BRU safety program. Safety shall be achieved through pre-engineering safety analyses and evaluation of design concepts. This effort shall provide surveillance, control, and visibility to ensure that no design creates a condition that can cause personnel injury, damage, or loss of equipment. The safety program shall meet the objectives to:

a. Eliminate all MIL-STD-882 Categories I and II hazard levels and provide control of all Category III hazard levels commensurate with mission objectives. To select an optional corrective action and to determine whether to implement the corrective action, a tradeoff study shall be conducted. Final implementation shall be acceptable to the procuring activity.

b. Ensure the subassemblies or components cannot be incorrectly assembled or incorrectly installed.

5.1.8.1.1 Safety program functions. The safety program shall contain the following

MIL-STD-882 requirements, as a minimum:

a. Provide for qualitative systems analyses to identify potential hazards. Close attention shall be given to those design features and characteristics that have created safety related problems on previous systems.

b. Submit periodic safety program status reports identifying all category hazard levels, including probability of occurrence. Probabilities shall be based on mean time between failures (MTBF) data and past failure histories. If a corrective safety program has been identified and is to be corrected within the scope of the contract, the corrective action also shall be included.