UNDUCTED PROPULSION SYSTEM

Abstract: apparatuses and systems are provided herein for unducted propulsion systems. the system includes an aft housing for low drag for high subsonic sustained flight. a plurality of blades are affixed to the aft housing, wherein the housing defines a flowpath curve extending from the axial extent of the aft blade root to the aft end of the aft housing. the flowpath curve is described by an axial direction parallel to an axis of rotation and a radius from the axis of rotation. the flowpath curve includes first point having a first radius where the radius reaches a maximum aft of the aft blade root and a second point forward of the first point having a second radius where the radius stops decreasing. the ratio of the first radius to the second radius is greater than or equal to 1.081.

Inventor(s): Syed Arif Khalid, Daniel L. Tweedt, David B. Riddle

CPC Classification: F02C3/067 (GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines ; jet-propulsion plants ; construction of compressors or fans ; generating combustion products of high pressure or high velocity ; using gas turbines in compression refrigeration plants ))

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