Aircraft propulsion systems

摘要

Disclosed are propulsion systems (30) providing reduced fuel burn, weight and cost. A single gas generator core (38) drives multiple bladed propulsion elements (36) with a power train (48). The core (38) has a forward compressor (56) and a rearward turbine (40) and rotates about a longitudinal core axis (62). The bladed propulsion elements (36) rotate about bladed propulsion element axes (78) that are not coaxial with the core axis (62). The bladed propulsion elements (36) discharge an ambient air stream (50) rearward as a bypass stream (52) portion and a core stream (54) portion. The core stream (54) portion is directed to the compressor (56). The propulsion systems (30) mount inside a fuselage (22) of an airframe (20) or they are suspended beneath a wing (24) via pylons (32).