4 ms·

Hydrogen offers low drag and good thermal conductivity: http://en.wikipedia.org/wiki/Hydrogen-cooled_turbo_generator http://en.wikipedia.org/wiki/Hydrogen-coole

Hydrogen offers low drag and good thermal conductivity: http://en.wikipedia.org/wiki/Hydrogen-cooled_turbo_generator http://en.wikipedia.org/wiki/Hydrogen-cooled_turbo_generator

nakedrobot2 13y ago
Why wouldn't they spin instead in a near-vacuum, instead of an environment of hydrogen?
- bronson 13y ago
  Because near vacuum is a terrible heat conductor.
- kragen 13y ago
  Vacuum has no drag but also no thermal conductivity, so you'd have to cool the generators some other way.