Power Gear Box (PGB) of the flight demonstrator Contra Rotative Open Rotor (CROR) engine

Flight Test Demonstrator CROR includes the Power Gear Box which is one major element of the power system of this Contra Rotative Open Rotor. This PGB tranfers power from the PWT to the 2 propeller shafts. The two other elements of the power system are the Power Turbine (PWT) and the shafts transmitting power to propeller blade system.