# US 2023/0406484 A1 · Tandem Split Divergent Winglet > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0406484 A1 - Document ID: US20230406484A1 - Status: Published application - Kind: A1 - Application number: 18/337,130 - Filed: 2023-06-19 - Published: 2023-12-21 - Earliest claimed: 2022-06-17 - Assignees: Textron Aviation Inc. - Applicants: Textron Aviation Inc. - Inventors: Gonzalo Eduardo Mendoza; Corey Wailes Hagemeister; Kelly Ray Laflin - Web page: https://patentgrep.com/patent/US20230406484A1 ## CPC - B64C 23/069: {using one or more wing tip airfoil devices, e.g. winglets, splines, wing tip fences or raked wingtips} - B64D 47/06: for indicating aircraft presence - Y02T 50/10: Drag reduction - B64C: AEROPLANES; HELICOPTERS - B64D: EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A tandem split divergent winglet for an aircraft includes a forward sail extending from an outboard end of a wing of the aircraft having a cant angle in a first direction, and an aft sail extending partially from the forward sail and partially from the outboard end of the wing. The aft sail has a cant angle in a second direction opposite the first direction. For aircraft having a low wing, the forward sail includes an upwards cant angle and the aft sail includes a downwards cant angle. For aircraft having a high wing, the forward sail includes a downwards cant angle, and the aft sail includes an upwards cant angle. Light emitted from an integrated light formed within the aft sail is blocked from reaching a cockpit window of the aircraft by the forward sail. ## Claims ### Claim 1 A tandem split divergent winglet for an aircraft, comprising: a forward sail extending upwards from an outboard end of a wing of the aircraft, wherein the wing is a low wing extending from a lower portion of a fuselage of the aircraft, and wherein the forward sail comprises a positive cant angle with a continuous concave curvature facing the fuselage; and an aft sail extending downwards from the outboard end of the wing, wherein the aft sail extends partially from the forward sail and partially from the outboard end of the wing, and wherein the aft sail comprises a negative cant angle and a continuous concave curvature facing the fuselage. ### Claim 2 (depends on 1) The tandem split divergent winglet of claim 1, comprising an integrated light formed within the aft sail, wherein the forward sail comprises a geometry and an orientation configured to block light emitted from the integrated light from reaching a cockpit window of the aircraft. ### Claim 3 (depends on 2) The tandem split divergent winglet of claim 2, wherein the integrated light comprises an outer lens having a profile that is in line with a profile of the aft sail and that matches a shape of the aft sail. ### Claim 4 (depends on 2) The tandem split divergent winglet of claim 2, wherein the integrated light is disposed on an outboard side of the aft sail. ### Claim 5 (depends on 2) The tandem split divergent winglet of claim 2, wherein the integrated light extends from a leading edge of the aft sail to a trailing edge of the aft sail on an outboard side. ### Claim 6 (depends on 2) The tandem split divergent winglet of claim 2, wherein the integrated light is located within a leading edge of the aft sail. ### Claim 7 (depends on 2) The tandem split divergent winglet of claim 2, wherein the integrated light is integrated within a fairing along an intersection of the forward sail and the aft sail. ### Claim 8 (depends on 2) The tandem split divergent winglet of claim 2, wherein the integrated light illuminates through both an upper surface and a lower surface of the aft sail without extending to a leading edge or a trailing edge of the aft sail. ### Claim 9 A tandem split divergent winglet for an aircraft, comprising: a forward sail extending downwards from an outboard end of a wing of the aircraft, wherein the wing is a high wing extending from an upper portion of a fuselage of the aircraft, and wherein the forward sail comprises negative cant angle with a continuous concave curvature facing the fuselage; and an aft sail extending upwards from the outboard end of the wing, wherein the aft sail extends partially from the forward sail and partially from the outboard end of the wing, and wherein the aft sail comprises a positive cant angle and a continuous concave curvature facing the fuselage. ### Claim 10 (depends on 9) The tandem split divergent winglet of claim 9, comprising an integrated light formed within the aft sail, wherein the forward sail comprises a geometry and an orientation configured to block light emitted from the integrated light from reaching a cockpit window of the aircraft. ### Claim 11 (depends on 10) The tandem split divergent winglet of claim 10, wherein the integrated light comprises an outer lens having a profile that is in line with a profile of the aft sail and that matches a shape of the aft sail. ### Claim 12 (depends on 10) The tandem split divergent winglet of claim 10, wherein the integrated light is disposed on an outboard side of the aft sail. ### Claim 13 (depends on 10) The tandem split divergent winglet of claim 10, wherein the integrated light extends from a leading edge of the aft sail to a trailing edge of the aft sail on an outboard side. ### Claim 14 (depends on 10) The tandem split divergent winglet of claim 10, wherein the integrated light is located within a leading edge of the aft sail. ### Claim 15 (depends on 10) The tandem split divergent winglet of claim 10, wherein the integrated light is integrated within a fairing along an intersection of the forward sail and the aft sail. ### Claim 16 (depends on 10) The tandem split divergent winglet of claim 10, wherein the integrated light illuminates through both an upper surface and a lower surface of the aft sail without extending to a leading edge or a trailing edge of the aft sail. ### Claim 17 A tandem split divergent winglet for an aircraft, comprising: a forward sail extending from an outboard end of a wing of the aircraft, wherein the forward sail is canted in a first direction, and wherein the forward sail comprises a continuous concave curvature facing a fuselage of the aircraft; and an aft sail extending partially from the forward sail and partially from the outboard end of the wing, wherein the aft sail is canted in a second direction different from the first direction, and wherein the aft sail comprises a continuous concave curvature facing the fuselage. ### Claim 18 (depends on 17) The tandem split divergent winglet of claim 17, comprising an integrated light formed within the aft sail, wherein the forward sail comprises a geometry and an orientation configured to block light emitted from the integrated light from reaching a cockpit window of the aircraft. ### Claim 19 (depends on 17) The tandem split divergent winglet of claim 17, wherein the wing is a low-wing extending from a lower portion of a fuselage of the aircraft, and wherein the first direction is upwards and the second direction is downwards with respect to the wing. ### Claim 20 (depends on 17) The tandem split divergent winglet of claim 17, wherein the wing is a high-wing extending from an upper portion of a fuselage of the aircraft, and wherein the first direction is downwards and the second direction is upwards with respect to the wing.