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Which of the following cycles is used in RL10 hydrogen/oxygen rocket engine?

Which of the following cycles is used in RL10 hydrogen/oxygen rocket engine? Correct Answer Expander cycle

Expander cycle was used in RL-10 hydrogen/oxygen rocket engine. In this cycle, fuel used for cooling the thrust chamber is used as the working fluid in the turbine used to power the turbopumps. The exhaust from the turbine is fed to the combustion chamber and burned.

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