Abstract: An engine exhaust noise suppression system comprising a plurality of bypass ports surrounding the exhaust tailpipe and opening to the atmosphere to create streams of cool air which generate vortices effective to dampen the exhaust noise vibrations and to contain the same as they dissipate into the atmosphere. Fluid is injected into the air streams to enhance the vorticular action thereof by applying a helical swirling motion to the streams.

Abstract: An annular rotator is mounted between inner and outer stators and has a plurality of combustion chambers therein, each having an inlet port to receive a pressurized explosive fuel mixture from a source at one point in the rotation of the rotator and an exhaust port to later register with an exhaust opening in the outer stator when the fuel mixture is ignited. The intake ports later register with a source of presurized air and the exhaust ports register with additional exhaust openings in the outer stator to purge and cool the combustion chambers and to subsequently pressurize the chambers.