Question

what are the stages of combustion of a rocket engine ​

Answer 1

Answer:

The staged combustion cycle is a power cycle of a bipropellant rocket engine. In the staged combustion cycle, propellant flows through multiple combustion chambers, and is thus combusted in stages

Answer 2

Answer:

Typically, propellant flows through two kinds of combustion chambers; the first called preburner and the second called main combustion chamber. In the preburner, a small portion of propellant is combusted, and the increasing volume flow is used to drive the turbopumps that feed the engine with propellant.