Multiple choice

Which of the following makes use of inert gas as the reaction mass?

  1. A steam rocket

  2. Solar thermal rocket

  3. A nuclear thermal rocket

  4. A cold gas thruster
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A cold gas thruster is a rocket engine/thruster that uses a typically inert gas as the reaction mass. A cold gas thruster usually simply consists of a pressurized tank containing gas, a valve to control its release and a nozzle, and plumbing connecting them.

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