Object Details Manufacturer Aeronautical Engine Corporation (Long Island, New York) (Gnome) Designer Societe des Moteurs Gnome et Rhône Physical Description Type: Rotary, monosoupape (single valve), 9 ...

The original Gnome had two valves, with the inlet in the head of the piston and the exhaust in the in the cylinder head. The monosoupape, as the name signifies, had only one valve in the cylinder head ...