Description of Driving Event:
Voyager flight operations strategy and system design was based upon a philosophy of very limited real-time ground commanding, assuming the vast majority of activity could be preloaded onto the spacecraft. Flight experience, particularly early in the mission, proved that the need for real-time commanding was significantly greater than planned. The end-to-end system design which was based upon the above strategy was cumbersome to use in a real-time commanding environment.

Description of Driving Event:
Voyager flight operations strategy and system design was based upon a philosophy of very limited real-time ground commanding, assuming the vast majority of activity could be preloaded onto the spacecraft. Flight experience, particularly early in the mission, proved that the need for real-time commanding was significantly greater than planned. The end-to-end system design which was based upon the above strategy was cumbersome to use in a real-time commanding environment.