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Mission computer

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Northrop assigned development of the software for each avionics system to the individual suppliers. But they still needed an overall program to operate the aircraft. To operate this they needed what Northrop called a mission computer, which would sort through the mux bus traffic from the other systems, analyze the data, and send out orders. For example, for a bomb drop, the mission computer would take position and velocity data from the inertial navigation system and the air data computer; radar data; and calculate the appropriate moment for bomb release for the target designated, send the necessary data to the head-up or head-down displays for the pilot to monitor; and then send the necessary series of bombs away signals to the Pylon Interface Units, which would translate them to the appropriate electrical and software commands to the top of ordnance carried.

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