Turbojet thrust inverter with doors combined with an...

F - Mech Eng,Light,Heat,Weapons – 02 – K

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F02K 1/70 (2006.01)

Patent

CA 2197165

thrust inverter for a bypass turbojet with pivoting doors (7) which, during undeflected thrust, are flush with the outer wall of the nacelle and, during thrust inversion, become obstacles causing flow deviation. An internal upstream panel (20) doubles the inner surface of each door (7) and turns on the same pivot as the door (7). The door (7) and the upstream panel (20) are connected by an epicyclic gear train made up of a pawl (31), a planetary gear attached to the door (7) an external ring gear (34) attached to the upstream panel (20) sand at least one satellite pinion gear (33), free to rotate although part of the fixed inverter structure. When the turbojet is placed in inverse thrust position by an actuator, the door (7) and the upstream panel (20) pivot in opposite directions.

Un inverseur de poussée de turboréacteur à double flux comporte des portes pivotantes (7) intégrées en jet direct dans la paroi extérieure de nacelle et constituant des obstacles de déviation de flux en inversion de poussée. Un panneau amont interne (20) double la face interne de chaque porte (7) et est articulé sur le même pivot (27) que la porte (7). Les moyens de liaison entre la porte (7) et le panneau amont (20) sont constitués par un ensemble à train d'engrenage épicycloïdal composé d'un élément denté (31), planétaire solidaire de la porte (7), d'une couronne dentée (34) extérieure, solidaire du panneau amont (20) et d'au moins un pignon (33) satellite, libre en rotation et solidaire de la structure fixe de l'inverseur. Lors du passage en position de jet inversé sous l'action d'un moyen de commande, la rotation en pivotement de la porte (7) et du panneau amont (20) se fait dans des sens opposés.

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