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Aero 7A-5 ejector rack assembly
Principles of Operation - 14023_275

Aviation Ordinanceman 2 & 3 - Aviation theories and other practices
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Figure 10-13.—Mk-39 electric fuze arming connector used on the Aero 7A-5 bomb ejector rack. Rotating the manual release nut mechanically actuates the mechanical linkage. This raises the suspension hook sears and opens the suspension hooks. The mechanical linkage is also activated by the dual breech assembly. The electrical junction box electrically connects the bomb ejector rack to the aircraft’s weapons control system. Electrical power is supplied from the aircraft through the electrical junction box. This operates the mechanical arming solenoids, the dual breech assembly, and provides emergency operation of the rack. The voltage required for electrical arming doesn’t pass A1. through the electrical junction box. A separate connector assembly is located on the side of the bomb ejector rack. It connects the Mk 39 electric fuze connector to the aircraft’s fuze function control system. The Aero 7A-5 has mechanical and electrical arming capabilities. Two electromechanical solenoids are attached to the bomb ejector rack. They give the pilot the in-flight option of selecting nose only, tail only, or nose and tail arming capabilities. When an armed drop of an electrically fuzed weapon is desired, the Mk 122 Mod 0 safety arming switch is installed in the weapon. It is electrically connected to the Mk 39 electric fuze arming connector (fig. 10-13) during weapon loading procedures. By using the Mk 122 Mod 0 safety arming switch, the weapon is free of the suspension hooks before forwarding the fuze arming signal to the electric fuze. Aero 7B-4 Bomb Ejector Rack The Aero 7B-4 bomb ejector rack (fig. 10-14) is similar in operation to the Aero 7A-5 bomb ejector rack. The Aero 7B-4 bomb ejector rack is 2 inches shorter in height than the Aero 7A-5. This, together with modifications in the aircraft keel, provides 4 inches of additional deck clearance at the centerline fuselage station on the A-6 aircraft. The side location of the dual breech assembly and the rack mounting method also differ from the Aero 7A-5. REVIEW NUMBER 1 ANSWERS TO QUESTIONS Q1. THROUGH Q8. To suspend stores weighing up to 2,000 pounds on the Aero 65A bomb rack, you would use the Aero 1A adapter assembly. A2. Before you load a weapon on the Aero 65A bomb rack, you must cock and latch the rack. A3. A4. A5. A6. A7. A8. A 28-volt dc is required to energize the release unit of the Aero 65A bomb rack. The MAU-38/A bomb rack is mounted on the bomb bays of the P-3 aircraft. To connect a MAU-38/A bomb rack to a BRU-12/A bomb rack, you would use the AAC 571 change. The BRU-14/A bomb rack is a major modification of the Aero 65A bomb rack. The BRU-14/A bomb rack is installed in the P-3C aircraft. The BRU-15/A bomb rack is used on the wing stations of the P-3C aircraft. 10-10







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