Development and flight experience of the Voyager propulsion system

The primary Voyager Project objective is to extend the exploration of the solar system to the neighborhood of Jupiter and Saturn with a spacecraft that can conduct scientific experiments at both planetary systems and pave the way for later missions to the outer planets. The development and in-flight performance of the Voyager propulsion system are described. Emphasis is placed on the unique features of this system and on the solution to several problems encountered in its development. Over the past 20-month flight, the propulsion systems on Voyager I and Voyager II have exhibited excellent performance without failures.