-> Left rotor is the "combustion rotor". Combustion takes place in the chambers.
-> Right rotor is the "isolation rotor". It isolates the exhaust gases from the intake gases.
~ Green is the fuel-air mixture during intake.
~ Light Blue is the first stage compression.
~ Dark Blue is the second stage compression.
~ Yellow is combustion.
~ Red is the hot gases that push on the Power rotor.
~ Purple is the spent exhaust gases.
~ Grey is the gases exhausting.