# US 6,293,490 B1 · Aircraft > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,293,490 B1 - Document ID: US6293490B1 - Status: Granted - Kind: B1 - Application number: 09/447,647 - Filed: 1999-11-22 - Granted: 2001-09-25 - Earliest claimed: 1998-11-20 - Inventors: Markus Villinger - Web page: https://patentgrep.com/patent/US6293490B1 ## CPC - B64C 3/52: Warping - B64C 31/032: having delta shaped wing - B64C: AEROPLANES; HELICOPTERS ## Abstract Aircraft, in particular a hang-glider, with a flexible wing and a pilot's position preferably arranged beneath it, from which space the aircraft can be controlled, wherein the trailing edge of the flexible wing can be locally raised and/or lowered by means of a transmission means leading from said trailing edge to the pilot's space. ## Claims ### Claim 1 An aircraft with a flexible wing and a pilot's position, from which the aircraft can be controlled, wherein in said pilot's position at least one control element actuated by a pilot is provided for controlling said aircraft, characterized in that at least one trailing edge of the flexible wing is stiffened at least along a section of the trailing edge and can be locally raised or lowered by a transmission leading from the at least one control element to and being engaged substantially with said stiffened section of said trailing edge. ### Claim 2 (depends on 1) An aircraft according to claim 1, wherein said at least one elongate stiffened section of said at least one trailing edge of said flexible wing extends substantially at a right angle to a direction of flight. ### Claim 3 (depends on 1) An aircraft according to claim 1, wherein said at least one elongate stiffened section of said at least one trailing edge of said flexible wing is arranged preferably symmetrically to a left and a right side of a longitudinal central plane of said aircraft. ### Claim 4 (depends on 2) An aircraft according to claim 2, wherein said at least one trailing edge of said flexible wing is stiffened along at least more than half of its elongate extension. ### Claim 5 (depends on 2) An aircraft according to claim 2, wherein said at least one stiffened section of said at least one trailing edge of said flexible wing has at least several layers of material. ### Claim 6 (depends on 2) An aircraft according to claim 2, wherein said at least one stiffened section of said at least one trailing edge of said flexible wing has at least one separate stiffening element, for example a stiffening spar. ### Claim 7 (depends on 2) An aircraft according to claim 2, wherein said at least one stiffened section of said at least one trailing edge of said flexible wing has at least several layers of material and at least one separate stiffening element, for example a stiffening spar. ### Claim 8 (depends on 1) An aircraft according to claim 1, wherein said transmission includes at least two control cables by means of which areas of said trailing edge of said wing being arranged preferably symmetrically to a left and a right side of the longitudinal central plane of said aircraft can be pulled upwards and respectively downwards. ### Claim 9 (depends on 8) An aircraft according to claim 8, wherein said control cables are carried respectively over at least one guide point lying above or below the wing, and from said at least one guide point to said trailing edge of said wing. ### Claim 10 (depends on 9) An aircraft according to claim 9, wherein at least one of said guide points are arranged on a kingpost projecting upward centrally above said wing. ### Claim 11 (depends on 1) An aircraft according to claim 1, wherein at said pilot's position, a single control element which—proceeding from a neutral element—with a movement forwards or rearwards, moves areas of said trailing edge of said wing lying to a left and a right side of the central longitudinal plane of said aircraft in the same direction by said transmission downwards or respectively upwards, and which when moved to the left or right moves said areas of said trailing edges of the flexible wing lying to the left and right of said central longitudinal plane of said aircraft oppositely upwards or respectively downwards for curved flight. ### Claim 12 (depends on 11) An aircraft according to claim 11, wherein said single control element is a gimbal mounted lever mounted on a point fixed to said aircraft. ### Claim 13 (depends on 11) An aircraft according to claim 11, wherein said single control element is a universal joint mounted lever mounted on a point fixed to said aircraft. ### Claim 14 (depends on 12) An aircraft according to claim 12, wherein said lever is configured with two ends, wherein a first end represents an actuating handle for said pilot, and on a second end said transmission is attached. ### Claim 15 (depends on 13) An aircraft according to claim 13, wherein said lever is configured with two ends, wherein a first end represents an actuating handle for said pilot, and on a second end said transmission is attached. ### Claim 16 (depends on 1) An aircraft according to claim 1, wherein said aircraft is a hang-glider.