Efficient low-noise aircraft propulsion system

Abstract

An aircraft propulsion system comprising a reciprocating liquid cooled engine housed within the fuselage driving twin fuselage mounted ducted-fans is disclosed. The propulsion system may be liquid cooled with a liquid cooled exhaust and at least one turbocharger. The ducted-fans may run fan blade tip speeds of up to 97% Mach driven by a near constant RPM engine through a continuously variable transmission. The propulsion system may be low noise and may meet environmental standards typical in the automotive industry.

1 . A propulsion system for an aircraft, comprising:
 a reciprocating engine;   a continuously variable transmission,   wherein the reciprocating engine and the continuously variable transmission are housed within a fuselage of the aircraft;   a liquid cooled exhaust system; and   a ducted fan assembly configured to be powered by the reciprocating engine via a drive shaft connected to the continuously variable transmission,   wherein the ducted fan assembly is configured to be mounted to the exterior of the fuselage,   wherein the ducted fan assembly comprises at least three blades and one stator,   wherein the drive shaft is configured to be at least partially housed within the one stator,   
     
     
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