BRU-11A/A Bomb Ejector Rack

The BRU-11A/A bomb ejector rack is a modification of the BRU-10A/B bomb ejector rack. The BRU-11A/A is used on the wing stations of the S-3 aircraft. However, it doesn't operate in exactly the same way. The major difference between the two bomb ejector racks is that the BRU-11A/A is equipped with an IFOBRL. This mechanism consists of a remotecontrolled bomb rack lock and a remote-controlled emergency release for the bomb rack lock. This allows the bomb rack to be locked by the use of a remote-controlled actuator during loading and during flight. This eliminates the need for the safety pin assembly used on the BRU-10A/B.

There are several different models of the BRU-10A/B and the BRU-11A/A bomb ejector racks currently in use. Part numbers are assigned to identify the various models of configured bomb racks and are used during maintenance.

If you need more information about the BRU-10A/B and the BRU-11A/A bomb ejector racks, refer to Bomb Ejector Rack BRU-11A/A, NAVAIR 11-10C-24.

Once the parts have been properly cleaned, you should inspect them for damage or wear and replace or repair the parts as necessary. Before reassembling the ejector mechanism, apply a light coat of generalpurpose preservative lubricating oil (VV-L-800). To prevent the piston from locking up, you must wipe off all the excess oil.

For further information concerning the Aero 7A-5 and Aero 7B-4, refer to the publication Ejector Rack Assembly Model Aero 7A-5, NAVAIR 11-5D-20.

BRU-10A/B AND BRU-11A/A BOMB EJECTOR RACKS

The BRU-10A/B and BRU-11A/A bomb ejector racks are used to mount and sway brace a single weapon/store or for a variety of multiple weapon/store adapters. The BRU-10A/B bomb ejector rack is pylon mounted on the wing stations of the A-7E aircraft. It is part of the aircraft's basic weapon/store suspension system. It may also be weapons-rail mounted to the F-14 aircraft fuselage. The BRU-11A/A bomb ejector rack is pylon mounted on the wing stations of the S-3 aircraft. It is part of the aircraft's basic weapon/store suspension system.

BRU-10A/B Bomb Ejector Rack

The BRU-10A/B bomb ejector rack (fig. 10-15) has four suspension hooks-two hooks spaced 14 inches apart and two hooks spaced 30 inches apart. It carries weapons/stores weighing up to 4,000 pounds. The bomb ejector rack has the necessary electrical connections, mechanical and electrical arming units, ejection components, and the mechanical linkage for safely suspending and ejecting weapons or stores. Although the BRU-10A/B bomb ejector rack differs from the bomb ejector racks previously discussed, the basic principles of operation are the same, except for the operations discussed in the following paragraphs. As you read them, refer to figure 10-15.

A manual cocking bolt and a manual release bolt are located on the forward left-hand side of the frame assembly, Before you load a weapon or store, manually cock the mechanical linkage by rotating the cocking bolt. This places the linkage sears in a position to lock the suspension hooks when they are moved to the closed position. The suspension hooks may be released (opened) by manually rotating the manual release bolt. To prevent damage to the mechanical linkage, you must remove the safety flag assembly (safety pin) before you rotate either the cocking bolt or the release bolt.

Figure 10-16.-BRU-10A/B bomb ejector rack hook latched indicators.

To find out if the suspension hooks are properly Iocked, you must visually check the latch inspection holes (fig. 10-16) located in the frame assembly above each hook. If the hook is properly locked, you can see a silver latch indicator through the latching inspection hole. If the hook is not locked, you can see a blue or silver latch indicator. If the hooks are unlocked (open), the latching inspection hole will be blank.

The BRU-10A/B bomb ejector rack is designed to hold one ejector assembly that can be inserted in the bomb rack in one of four different positions (fig. 10-17).

Figure 10-17.-BRU-10A/B bomb ejector rack ejector assembly and installation positions.

Figure 10-19.-BRU-32/A bomb ejector rack.

auxiliary release unit uses one cartridge that opens the hooks only. Nose and tail arming solenoids are used with mechanical fuzing. The Mk 39 electric fuzing receptacle is used for electric fuzing. The bomb rack is interchangeable with the centerline. or the inboard and outboard pylons.