US 12,325,527 B2
Aircraft provided with an engine and an exhaust duct around an exhaust nozzle of the engine
Guillaume Legras, Velaux (FR); Philippe Pinto, Saint-Chamas (FR); and Christophe Albertini, Septemes les Vallons (FR)
Assigned to AIRBUS HELICOPTERS, Marignane (FR)
Filed by AIRBUS HELICOPTERS, Marignane (FR)
Filed on Oct. 16, 2023, as Appl. No. 18/380,240.
Claims priority of application No. 2213058 (FR), filed on Dec. 9, 2022.
Prior Publication US 2024/0190576 A1, Jun. 13, 2024
Int. Cl. B64D 33/04 (2006.01)
CPC B64D 33/04 (2013.01) 12 Claims
OG exemplary drawing
 
1. An exhaust duct configured to be arranged around an exhaust nozzle of an engine, the exhaust duct having a plurality of sections, the sections comprising an inlet section and an outlet section, the exhaust duct extending along a guiding line from the inlet section to the outlet section, the outlet section being configured to expel gases discharged by the exhaust nozzle,
wherein the sections are circular between the inlet section and the outlet section, with the exception of the sections of a deformed segment, each section of the deformed segment comprising a bottom sector and a top sector, the bottom sector having a non-circular shape so that at least a volume of liquid that is not able to reach, by force of gravity, the inlet section and the outlet section, is less than a volume threshold when the pitch and roll angles respectively lie within predetermined pitch and roll angle ranges.