US 11,939,933 B2
Mobile-cowl thrust reverser comprising a thrust-reduction mechanism that is independent of the mobile cowl
Denis Guillois, Moissy-Cramayel (FR); Florent Matthieu Jacques Nobelen, Moissy-Cramayel (FR); and Luigi Bisanti, Moissy-Cramayel (FR)
Assigned to SAFRAN NACELLES, Gonfreville-L'Orcher (FR); and SAFRAN AIRCRAFT ENGINES, Paris (FR)
Appl. No. 17/596,525
Filed by SAFRAN NACELLES, Gonfreville-l 'Orcher (FR); and SAFRAN AIRCRAFT ENGINES, Paris (FR)
PCT Filed Jun. 9, 2020, PCT No. PCT/FR2020/050976
§ 371(c)(1), (2) Date Dec. 13, 2021,
PCT Pub. No. WO2020/249896, PCT Pub. Date Dec. 17, 2020.
Claims priority of application No. 1906381 (FR), filed on Jun. 14, 2019.
Prior Publication US 2022/0260038 A1, Aug. 18, 2022
Int. Cl. F02K 1/72 (2006.01); F02K 1/76 (2006.01)
CPC F02K 1/72 (2013.01) [F02K 1/763 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A thrust reverser for an aircraft propulsion assembly, the thrust reverser comprising:
a fixed internal structure, a mobile external structure and at least one blocking flap, wherein the thrust reverser is configured to be placed in:
a full thrust configuration wherein the mobile external structure is in a closing position and the at least one blocking flap is in a retracted position so as to channel a fluid flow in a conduit delimited radially inwards by the fixed internal structure and radially outwards by the mobile external structure, p2 a thrust reversal configuration wherein the mobile external structure is in an opening position freeing a radial opening, and wherein the at least one blocking flap is in a deployed position so as to deflect a portion of said fluid flow towards said radial opening;
a reduced thrust configuration wherein the mobile external structure is in the closing position and the at least one blocking flap is in a partially deployed position; and
an actuation mechanism configured to move the at least one blocking flap between the retracted position and the partially deployed position while the mobile external structure is in the closing position, so as to switch the thrust reverser respectively between said full thrust configuration and said reduced thrust configuration, the actuation mechanism comprising at least one tie rod and a driving member of the at least one tie rod, the driving member being movable between an idle position and an active position, the at least one tie rod being connected at a first end to the at least one blocking flap and at a second end to the driving member such that the movement of the driving member between the idle position and the active position induces a movement of the at least one blocking flap respectively between the retracted position and the partially deployed position, the movement of the driving member between the idle position and the active position comprising a rotation movement of the driving member about a longitudinal axis of the thrust reverser.