Aircraft propulsion system combining two open rotor propulsion units and one BLI propulsion unit

摘要

Aircraft propulsion device combining two open rotor propellants (4) of the USF type with a tractor blower, each connected to a rear fuselage part (2) by a ducted mast (6), and a BLI propulsion unit (5) of UHBR BLI type installed in the tail of the fuselage in which a BLI blower (18) of the BLI propulsion unit (5) is rotated by the rotors (13) of the open rotor propulsion units (4) via a mechanical transmission with a transmission shaft and mechanical references. The BLI powertrain provides 15% to 35%, for example 20%, of the total thrust of the aircraft. The combination of a BLI thruster (5) with two open rotor thrusters (4) in this configuration increases the propulsive efficiency of the aircraft. Figure for the abstract: Fig. 2