US 12,214,865 B2
Wing tip device
Norman Wood, Bristol (GB)
Assigned to AIRBUS OPERATIONS LIMITED, Bristol (GB)
Filed by AIRBUS OPERATIONS LIMITED, Bristol (GB)
Filed on Dec. 22, 2023, as Appl. No. 18/393,888.
Application 18/393,888 is a continuation of application No. 17/273,912, granted, now 11,884,382, previously published as PCT/GB2019/052333, filed on Aug. 20, 2019.
Claims priority of application No. 1814570 (GB), filed on Sep. 7, 2018.
Prior Publication US 2024/0336351 A1, Oct. 10, 2024
Int. Cl. B64C 23/06 (2006.01); B64C 3/14 (2006.01)
CPC B64C 23/072 (2017.05) [B64C 3/14 (2013.01); B64C 2003/146 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A wing tip device, or a wing having a wing tip device, for a fixed wing aircraft, comprising:
a first leading edge region having a first sweep angle,
a second leading edge region outboard of the first leading edge region in a spanwise direction and having a second sweep angle smaller than the first sweep angle,
wherein the first leading edge region is blended into the second leading edge region by a concave junction,
a third leading edge region outboard of the second leading edge region in the spanwise direction and adjacent a tip end of the wing tip device, and having a third sweep angle greater than the first sweep angle,
wherein the second leading edge region is adapted to generate a first vortex,
wherein the third leading edge region is adapted to generate a second vortex which builds towards the tip end of the wing tip device,
wherein a trailing edge of the wing tip device includes a convex portion, and
wherein a tip end connects the convex portion of the trailing edge with the third leading edge of the wing tip device via a concave portion.