초록 ▼

The present disclosure relates to a self-mounted cascade for a thrust reverser of an airplane jet engine nacelle. The cascade includes an upstream portion and an opposite downstream portion, along with respective connection means so that two adjacent cascades are directly connected to one another on

The present disclosure relates to a self-mounted cascade for a thrust reverser of an airplane jet engine nacelle. The cascade includes an upstream portion and an opposite downstream portion, along with respective connection means so that two adjacent cascades are directly connected to one another only in the respective downstream portions by downstream connection means thereof. The downstream portion corresponds to an area extending from a downstream side edge over a length less than or equal to N times the length of the last cavity located along said downstream side edge, where N is less than 3. The present disclosure is of use in the field of airplane jet engine nacelles.

대표청구항 ▼

1. A self-mounted cascade vane for a cascade thrust reverser for an airplane turbojet engine nacelle, said cascade vane being provided with a plurality of cells with two opposite openwork front surfaces, having: two opposite side edges extending over a width of the cascade vane, with an upstream sid

1. A self-mounted cascade vane for a cascade thrust reverser for an airplane turbojet engine nacelle, said cascade vane being provided with a plurality of cells with two opposite openwork front surfaces, having: two opposite side edges extending over a width of the cascade vane, with an upstream side edge situated in an upstream portion and a downstream side edge situated in a downstream portion;two opposite transverse edges extending over a length of the cascade, with a first transverse edge and a second transverse edge;an upstream fastening device formed on the upstream side edge and designed to fasten the cascade vane on a stationary structure of the nacelle; andfirst and second connecting devices formed on the two opposite transverse edges, respectively, to connect the cascade vane to two adjacent cascades situated on the cascade thrust reverser;wherein the first and second connecting devices are arranged only on the downstream portion of the cascade vane to directly connect the cascade vane to the two adjacent cascades only in the downstream portion at the first and second connecting devices, said downstream portion corresponding to an area extending from the downstream side edge over a length smaller than or equal to N times the length of the last cell situated along said downstream side edge, where N is less than 3. 2. The cascade vane according to claim 1, wherein at least one of the first and second downstream connecting devices is positioned partially withdrawn from its respective transverse edge. 3. The cascade vane according to claim 2, wherein one of the first and second downstream connecting devices is positioned partially withdrawn relative to its respective transverse edge toward the inside of the cascade, and the other of the first and second downstream connecting devices is positioned partially withdrawn relative to its respective transverse edge toward the outside of the cascade. 4. The cascade vane according to claim 1, wherein one of the first and second downstream connecting devices has at least one passage opening for a fastening member situated withdrawn relative to its respective transverse edge toward the inside of the cascade, while the other of the first and second downstream connecting devices has at least one passage opening for a fastening member situated withdrawn relative to its respective transverse edge toward the outside of the cascade. 5. The cascade vane according to claim 1, wherein the first downstream connecting device has at least one first connecting tab and the second downstream connecting device has at least one second connecting tab. 6. The cascade vane according to claim 5, wherein the first downstream connecting device has at least one first front connecting tab and the second downstream connecting device has at least one second front connecting tab, each front connecting tab extending substantially parallel to the openwork front surfaces of the cascade vane. 7. The cascade vane according to claim 6, wherein the first front connecting tab is arranged in a first downstream corner of the cascade vane and is situated at least partially overlapping a cell situated in said first downstream corner, and the second front connecting tab is arranged in a second downstream corner of the cascade vane, opposite the first downstream corner, and is situated at least partially overlapping a cell situated in said second downstream corner. 8. The cascade vane according to claim 6, wherein the first front connecting tab is level with one of the two openwork front surfaces of the cascade vane, while the second front connecting tab is withdrawn relative to said front surface of the cascade vane in a direction substantially normal to the openwork front surfaces of the cascade vane. 9. The cascade vane according to claim 6, wherein the first front support tab and the second front support tab are withdrawn relative to the two openwork front surfaces of the cascade vane in a direction substantially normal to the openwork front surfaces of the cascade vane. 10. The cascade vane according to claim 5, wherein the first downstream connecting device has at least one first side connecting tab and the second downstream connecting device has at least one second side connecting tab, each side connecting tab extending substantially parallel to the downstream side edge. 11. The cascade vane according to claim 10, wherein the first side connecting tab is arranged in a first downstream corner of the cascade vane, coplanar or offset relative to said downstream side edge, and the second side connecting tab is arranged in a second downstream corner of the cascade vane, opposite the first downstream corner. 12. The cascade vane according to claim 10, wherein at least one of the first side connecting tab and the second side connecting tab has at least one of: an upper wall substantially parallel to and coplanar with an upper front surface of the cascade vane, anda lower wall substantially parallel to and coplanar with a lower front surface of the cascade vane. 13. A cascade assembly for a cascade thrust reverser, having at least one first, second, and third successive cascade vane according to claim 1, in which: the first cascade vane is connected to the second cascade vane by complementary cooperation between the first downstream connecting device formed on the first transverse edge of the first cascade vane and the second downstream connecting device formed on the second transverse edge of the second cascade vane, the first transverse edge of the first cascade vane being substantially joined with the second transverse edge of the second cascade vane outside the area where said downstream connecting device is formed; andthe second cascade vane is connected to the third cascade vane by complementary cooperation between the first downstream connecting device formed on the first transverse edge of the second cascade vane and the second downstream connecting device formed on the second transverse edge of the third cascade vane, the first transverse edge of the second cascade vane being substantially joined to the second transverse edge of the third cascade vane outside the area where said downstream connecting device is formed. 14. An airplane turbojet engine nacelle having a cascade thrust reverser equipped with at least one assembly according to claim 13, where the cascade vanes of the assembly are fastened in the upstream portions thereof, with their respective upstream fastening means. 15. The cascade vane according to claim 1, wherein where N is less than or equal to 1. 16. The cascade vane according to claim 8, wherein the first front connecting tab is level with the upper front surface of the cascade vane.