F - Mech Eng,Light,Heat,Weapons – 02 – K
Patent
F - Mech Eng,Light,Heat,Weapons
02
K
F02K 1/62 (2006.01) F02K 1/72 (2006.01) F02K 3/04 (2006.01)
Patent
CA 2511432
The invention relates to a device comprising gratings which are used to form a reverse flow from a jet engine thrust flow. The inventive device comprises a plurality of flow diverter gratings (22) which are disposed side-by-side at the outer edge of an annular thrust flow circulation channel. Each of the gratings comprises a plurality of intersecting inner transverse blades (24A) and inner longitudinal blades (24B), two adjacent gratings being separated by a side clearance which generates a leakage flow. The device also comprises means of re-directing the aforementioned leakage flow in a direction such as to increase the effectiveness of the reverse flow, said re-direction means comprising aerodynamic appendages (36) which are mounted to at least one outer longitudinal edge of each grating.
Dispositif à grilles pour la formation d'un flux d'inversion à partir d'un flux de poussée de turboréacteur, comportant une pluralité de grilles de dérivation de flux (22) disposées cote à cote à la périphérie externe d'un canal annulaire de circulation du flux de poussée, chaque grille étant constituée par une pluralité d'aubes internes transversales (24A) et d'aubes internes longitudinales (24B) entrecroisées, deux grilles adjacentes étant séparées par un jeu latéral générant un flux de fuite, dispositif comportant des moyens pour rediriger ce flux de fuite dans une direction augmentant l'efficacité du flux d'inversion constitués par des d'appendices aérodynamiques (36) montés sur au moins un bord externe longitudinal de chaque grille.
Blin Laurent
Cazuc Xavier
Vauchel Guy
Aircelle
Hurel Hispano
Robic
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