US 12,139,267 B2
Assembly for an aircraft nacelle and comprising a support panel, a thermal protection element and a fastening system
Frédéric Piard, Toulouse (FR); and Lionel Czapla, Toulouse (FR)
Assigned to Airbus Operations SAS, Toulouse (FR)
Filed by Airbus Operations SAS, Toulouse (FR)
Filed on Sep. 7, 2022, as Appl. No. 17/939,000.
Claims priority of application No. 2109535 (FR), filed on Sep. 10, 2021.
Prior Publication US 2023/0084689 A1, Mar. 16, 2023
Int. Cl. B64D 29/06 (2006.01); F01D 25/24 (2006.01); F16L 59/12 (2006.01)
CPC B64D 29/06 (2013.01) [F16L 59/12 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An assembly comprising:
a support panel of an internal fixed structure of a nacelle of a turbofan,
a thermal protection element in contact with the support panel at a contact surface, and
a plurality of fastening systems which removably fasten the thermal protection element to the support panel,
wherein, for each fastening system, the thermal protection element has a hole passing through it,
wherein each fastening system comprises:
a female part accommodated in the corresponding hole, and having a base secured to the support panel and a cylindrical wall delimiting a free and open space in a direction away from the support panel, wherein the cylindrical wall has a circular shoulder which protrudes towards the interior of the cylindrical wall, and
a male part comprising
a sleeve inserted in the cylindrical wall and pierced with a main bore,
a slide movable in translation in the main bore, and
a plurality of balls,
wherein, for each ball, the sleeve has a secondary bore which is perpendicular to the main bore and which leads, on a first side, into said main bore and, on a second side, to the exterior of the sleeve,
wherein each ball is placed in the corresponding secondary bore and is movable in translation along said secondary bore between a locking position, in which the ball projects on the second side, and an unlocking position, in which the ball does not project on the second side,
wherein, for each ball, the slide comprises a cavity having a shape of a half-ball,
wherein the slide is movable in translation between a blocking position, in which the slide is in a position such that the cavities are not opposite the balls and such that the balls are forced into the locking position, and an unblocking position, in which the slide is in a position such that the cavities are opposite the balls allowing the balls to pass into the unlocking position, and
wherein the male part comprises a cap which is secured to the sleeve and which bears against a face of the thermal protection element on a side opposite to the contact surface.