US 11,753,176 B2
Forward secondary structure for a mounting pylon of an aircraft
Alexis Courpet, Toulouse (FR); Jean Geliot, Toulouse (FR); and Arnaud Bourhis, Toulouse (FR)
Assigned to Airbus Operations (S.A.S.), Toulouse (FR)
Filed by Airbus Operations (S.A.S.), Toulouse (FR)
Filed on Dec. 21, 2021, as Appl. No. 17/558,213.
Claims priority of application No. 2100298 (FR), filed on Jan. 13, 2021.
Prior Publication US 2022/0219829 A1, Jul. 14, 2022
Int. Cl. B64D 27/26 (2006.01); B64D 29/06 (2006.01); B64D 29/08 (2006.01)
CPC B64D 27/26 (2013.01) [B64D 29/06 (2013.01); B64D 29/08 (2013.01); B64D 2027/264 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A forward secondary structure for a mounting pylon for a turbomachine, the forward secondary structure comprising:
an aerodynamic fairing comprising a first cowl and a second cowl, the first cowl being adjacent to the second cowl; and
a chassis clad with the aerodynamic fairing;
wherein the forward secondary structure extends from upstream to downstream along a longitudinal axis;
wherein the first cowl has an upstream portion;
wherein the second cowl has an upstream portion;
wherein the first cowl extends lengthwise along a longitudinal direction and comprises, in the upstream portion thereof, an articulation system for articulating the first cowl to the chassis, by which articulation system the first cowl can pivot, with respect to the chassis about an axis of rotation that is normal to the longitudinal axis, between a closed position, in which all of an inner face of the first cowl is pressed against the chassis, and an open position, in which the first cowl frees up an opening in the forward secondary structure; and
wherein the second cowl extends lengthwise along the longitudinal direction and comprises, in the upstream portion thereof, an articulation system for articulating the second cowl to the chassis, by which articulation system the second cowl can pivot, with respect to the chassis about an axis of rotation that is normal to the longitudinal axis, between a closed position, in which all of an inner face of the second cowl is pressed against the chassis, and an open position, in which the second cowl frees up an opening in the forward secondary structure.