what are the dimensions of the voyager spacecraft?

Answer 1

Tough question because a lot of the intruments stick out from the bus on booms making the entire deployed length pretty substantial. It's dish is 12 feet across and the spacecraft bus (the non-payload guts of the thing where the gyros, computers, tape recorder and communications equipment lives) is about half that. Most of the visble, IR and UV instruments stick out on one boom about 10 feet long, and then opposite those is the radioactive thermo-electric generator sticking out about 20 feet from the center of mass of the vehicle.

Finally there are some low gain dipole plasma radio wave antennas (2 metal rods oriented at 90 degree angles to one another) and a low field magnetometer boom which is probably about 24 feet long but oriented such that it only projects maybe 12-15 feet from the edge of the high gain antenna (communications dish).

The images below show you what the beast looks like, but the second one does not show the magnetometor boom.

Answer 2

The diameter of the voyager spacecraft dish is 3.7 meters (14 feet) based on information from JPL. Trying to verify the dimensions on the booms, antennas and the generator