Development of a Linear Linkless Feed System
Final rept. Jun-Dec 1974
EMERSON ELECTRIC CO ST LOUIS MO
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The Linear Linkless Storage and Feed System was required to interface with a multibarrel gun similar in configuration to the GAU-8A and the ammunition and gun bays of the F-15 aircraft. A linked carrier concept was used to transfer ammunition through each of two ammunition compartments operating in parallel. The ammunition is extracted from an endless belt of protective metallic carriers at the exit of each compartment, the pitch spacing between rounds is expanded, and the two separate streams of ammunition are combined for transfer to the weapon. Misfired rounds and empty cases returning from the weapon are separated into two streams, the pitch spacing between rounds is contracted, and they are restowed in the belt of carrier elements. The carrier elements are stored inside the magazine compartments in a folded arrangement so as to best utilize the available storage volume and further reduce the linear velocity of the belt within the magazine. As the belt translates through the magazine compartment, a series of guide tracks in the compartment walls unfold and refold the belt as it passes over a series of powered sprockets at the ends of each compartment. A separate flexible conveyor operating in flexible chuting between the combining unit and the weapon serves to isolate the fixed elements of the feed system from gun motions due to recoil and counter-recoil or boresighting.
- Attack and Fighter Aircraft