Avionics systems for advanced launch vehicles

A brief description of the successful pre-planned product improvement program used for the integration of modern avionics into the Centaur upper stage system is used to illustrate the implementation of evolutionary changes to an existing launch system. This concept can be used to leverage industry technology to existing vehicles as well as new programs. A common module approach to standard avionics processing capabilities is developed to provide a technology evolution plan to benefit existing and future systems and reduce the total development risk. Topics discussed include multipath redundant avionics, adaptive guidance, navigation & control, electromechanical actuators, integrated GPS (Global Positioning System) with the inertial navigation system, and laser ordnance initiation systems