US 12,006,892 B2
Thrust reverser comprising doors forming an upward air deflection opening in the open position
Sebastien Laurent Marie Pascal, Moissy-Cramayel (FR)
Assigned to SAFRAN NACELLES, Gonfreville-l'Orcher (FR)
Appl. No. 17/790,661
Filed by SAFRAN NACELLES, Gonfreville-l'Orcher (FR)
PCT Filed Dec. 18, 2020, PCT No. PCT/FR2020/052543
§ 371(c)(1), (2) Date Jul. 1, 2022,
PCT Pub. No. WO2021/136898, PCT Pub. Date Jul. 8, 2021.
Claims priority of application No. 2000005 (FR), filed on Jan. 2, 2020.
Prior Publication US 2023/0067232 A1, Mar. 2, 2023
Int. Cl. F02K 1/62 (2006.01)
CPC F02K 1/62 (2013.01) [F05D 2220/323 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A thrust reverser for an aircraft propulsion assembly, said reverser having a central longitudinal axis and comprising a fixed structure, a lower door and an upper door, the lower door and the upper door each comprising a downstream edge and each being movable with respect to the fixed structure, around a respective axis of rotation, between:
a closed position wherein the lower and upper doors delimit with the fixed structure a flow conduit, the flow conduit comprising an ejection outlet delimited at least partly by a rear end of the fixed structure, the lower and upper doors in the closed position being configured to be able to guide a fluid flowing in the conduit to its ejection outlet to generate a thrust, and
an open position wherein the lower and upper doors each release a reversal opening so as to be able to evacuate from the flow conduit a first portion of said fluid, via these reversal openings, and redirect at least a fraction of the fluid thus evacuated towards a front end of the fixed structure in order to generate counter-thrust,
the downstream edge of the lower door and the downstream edge of the upper door defining, when the lower and upper doors are in the open position, a deflection opening configured to allow a second portion of said fluid to exit the reverser through said deflection opening, said reverser comprising, when the lower and upper doors are in the open position:
a midpoint of the downstream edge of the lower door is offset along the central longitudinal axis towards the rear by a first distance with respect to a midpoint of the downstream edge of the upper door, these midpoints intersecting a median longitudinal plane perpendicular to said axis of rotation of the lower and upper doors,
said midpoint of the downstream edge of the lower door is offset in a vertical direction, with respect to said midpoint of the downstream edge of the upper door, towards a distal end of the lower door by a second distance, such that said midpoint of the downstream edge of the lower door and said midpoint of the downstream edge of the upper door are not overlapping in said vertical direction,
the vertical direction being perpendicular to the central longitudinal axis and to the axis of rotation of the lower and upper doors,
the ratio of said second distance and said first distance is comprised between 0.2 and 2.