The so-called Propulsive Fuselage Concept (PFC) has the potential to play a key role in developing more efficient and less polluting airplanes of the future. Fuselage wake-filling propulsion integration incorporates the ingestion and re-energisation of the fuselage boundary layer flow by the propulsion system. The positive effect of “wake-filling” on propulsive power requirements has long been known from the field of marine propulsion. Ship propellers are typically located at the aft body of the vessel and operated within the boundary layer flow close to the ship’s body surface. This physical principle is also applicable to airborne propulsion, as the 11
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