Propulsion unit for an aircraft and air intake structure for...

Details Propulsion unit for an aircraft and air intake structure for... Propulsion unit for an aircraft and air intake structure for...

F - Mech Eng,Light,Heat,Weapons

02

C

F02C 7/04 (2006.01)

Patent

CA 2719460

This propulsion unit for an aircraft comprises: a fan (3) comprising a fan casing (23) the interior wall of which has a coating (25) the upstream edge of which is set back relative to the upstream edge (29) of the said casing (23), and an air intake assembly (A) comprising an air intake structure (1) comprising an air intake lip (7) and an acoustic shroud (11) extending between this air intake lip (7) and the upstream edge of the said coating (25). The said shroud (11) is connected to the said casing (23) simply by nesting inside this casing (23), this nesting possibly being supplemented by discrete means of connection between these two elements (11, 23).

Cet ensemble propulsif pour aéronef comprend : une soufflante (3) comprenant un carter de soufflante (23) dont la paroi intérieure comporte un revêtement (25) dont le bord amont est disposé en retrait par rapport au bord amont (29) dudit carter (23), et un ensemble d'entrée d'air (A) comprenant une structure d'entrée d'air (1) comportant une lèvre d'entrée d'air (7) et une virole acoustique (11) s'étendant entre cette lèvre d'entrée d'air (7) et le bord amont dudit revêtement (25). Ladite virole (11) est reliée audit carter (23) par simple encastrement à l'intérieur de ce carter (23), éventuellement complété par des moyens ponctuels de liaison entre ces deux éléments (11, 23).

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