Topic summary
Voyager spacecraft
Extracted from the Wikipedia article Voyager program.
Spacecraft design
The Voyager spacecraft each weighed 815 kilograms (1,797 pounds) at launch, but after fuel usage are now about 733 kilograms (1,616 pounds). Of this weight, each spacecraft carries 105 kilograms (231 pounds) of scientific instruments. The identical Voyager spacecraft use three-axis-stabilized guidance systems that use gyroscopic and accelerometer inputs to their attitude control computers to point their high-gain antennas towards the Earth and their scientific instruments towards their targets, sometimes with the help of a movable instrument platform for the smaller instruments and the electronic photography system.