• Question: Does the RCS on a space shuttle require a special type of fuel, or does it get it from the main fuel tank (rocket fuel)?

    Asked by Krishan to Agata, Chris, John, Kirstin, Michael on 21 Jun 2016.
    • Photo: John Allport

      John Allport answered on 21 Jun 2016:

      No idea!

    • Photo: Chris Hackett

      Chris Hackett answered on 22 Jun 2016:

      It would use a different tank as it would use a different type of fuel. Reaction control uses a type of thruster called cold gas, it has a low thrust and Isp but allows for fine control. Using the rocket fuel would be like trying to hit a nail into wood using a truck

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