Hydraulic energy converter
Integrated reduction gear and counterrotation propeller
Marine propelling apparatus
Method and apparatus for serial coolant flow control
Noise reduction in aircraft propellers
Oppositely skewed counter-rotating fans
Pitch change mechanism for prop fans
Propeller combination for a boat propeller unit
Propeller combination for a boat propeller unit
Propeller module for an aero gas turbine engine
Propeller module for an aero gas turbine engine
Propeller module for an aero gas turbine engine
Propeller pitch change mechanism
Propeller shaft assembly for marine propulsion system
Propfan engine having two oppositely rotating fan rotors
Rotatable turbine frame
Rotor device
Rotor system, particularly a boat propeller system
Rotor with a split rotor blade
Ship drive with two counterturning propellers