A vehicle management and mission management computer architecture and packaging may include a first line replaceable unit and a second line replaceable unit. The first line replaceable unit may include a vehicle management system computer channel coupleable to a group including at least one mission related system and at least one vehicle system. The first line replaceable unit may also include a mission management system computer channel coupleable to the group including the at least one mission related system and the at least one vehicle system. The second line replaceable unit may include another vehicle management system computer channel coupleable to the group including the at least one mission related system and the at least one vehicle system. The second line replaceable unit may also include another mission management system computer channel coupleable to the group including the at least one mission related system and the at least one vehicle system.