EP1434712A1 - Wing structure for kite-like device - Google Patents
Wing structure for kite-like deviceInfo
- Publication number
- EP1434712A1 EP1434712A1 EP02800649A EP02800649A EP1434712A1 EP 1434712 A1 EP1434712 A1 EP 1434712A1 EP 02800649 A EP02800649 A EP 02800649A EP 02800649 A EP02800649 A EP 02800649A EP 1434712 A1 EP1434712 A1 EP 1434712A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wing
- structure according
- wing structure
- leading edge
- trailing edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C31/00—Aircraft intended to be sustained without power plant; Powered hang-glider-type aircraft; Microlight-type aircraft
- B64C31/028—Hang-glider-type aircraft; Microlight-type aircraft
- B64C31/036—Hang-glider-type aircraft; Microlight-type aircraft having parachute-type wing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C31/00—Aircraft intended to be sustained without power plant; Powered hang-glider-type aircraft; Microlight-type aircraft
- B64C31/06—Kites
- B64C2031/065—Kites of inflatable wing type
Definitions
- the present invention relates to kites and, more particularly, a wing structure intended to tow a mobile machine using the wind.
- the wing structure consists of a plurality of transverse parallel inflatable boxes respectively without and with a stiffening arch.
- the wing has an inflatable frame coated with a skin and has the shape of a spherical spindle, the leading edge and the trailing edge both affecting the well-known form in aeronautics of a crescent whose respective ends meet.
- a control line is attached to each end of the wing, which makes it difficult to control the wing, especially in direction.
- the wing of a type similar to that of document EP-A-0 202 271, is controlled using two control lines fixed substantially to the ends of the wing to facilitate control.
- the invention is situated in this context and relates to an improved wing structure compared to that described in the aforementioned documents.
- the wing structure has a leading edge substantially affecting the shape of a semicircle of a first diameter determined at rest in a first plane and a trailing edge, the structure comprising an armature provided to stiffen the wing comprising a leading portion in the form of at least one flange constituting the leading edge, and a plurality of transverse stiffeners.
- the frame is covered with an upper skin and a lower skin joining at the rear to form the trailing edge.
- the width of the upper and lower skins decreases continuously from the central part of the leading edge substantially to the respective ends thereof, so that the trailing edge substantially affects the partial shape d '' an ellipse whose length of the focal axis is smaller than the said first diameter, the line of intersection of the foreground and the general plane of the edge trailing point well below the base diameter of the leading edge.
- the frame is either inflatable, or made with polyethylene foam or equivalent foam.
- air inlets are provided between the lower and upper skins, so as to stretch them in flight regardless of the pressures exerted by the air on the lower and upper surfaces of the wing.
- the two skins may include perforated transverse ribs, that is to say non-watertight, between the transverse stiffeners.
- Figure 1 shows schematically in perspective a wing structure according to the invention
- Figure 2 illustrates the semicircle shape of the leading edge of the wing
- Figure 3 shows schematically in perspective the wing in flight with its control lines
- Figure 6 schematically illustrates the intersection of the planes of the leading edge and the trailing edge of the wing according to the invention.
- These ribs are preferably each materialized by a piece of fabric cut so that the skins conform to the general shape of the wing and maintain it, while not preventing the air flow circulating in overpressure in the alveoli.
- the space provided between the two skins can be made waterproof and inflatable with pressurized air, for example independently of the stiffeners and the flange (s) of the leading edge.
- the leading edge 4 takes the form of a semicircle of a determined diameter on an axis 14, while the trailing edge 12 substantially affects the partial shape of an ellipse.
- the length of the focal axis 16 of this ellipse is smaller than the diameter of the semicircle of the leading edge.
- Figure 5 shows the wing 2 seen from above in flight to highlight the fact that the leading and trailing edges are in no case parallel, and that the wing does not affect the shape d at all. 'a spherical spindle as in the known prior art.
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Wind Motors (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0113081 | 2001-10-11 | ||
FR0113081A FR2830840B1 (en) | 2001-10-11 | 2001-10-11 | WING STRUCTURE FOR KITES |
PCT/FR2002/003468 WO2003031258A1 (en) | 2001-10-11 | 2002-10-11 | Wing structure for kite-like device |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1434712A1 true EP1434712A1 (en) | 2004-07-07 |
Family
ID=8868159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02800649A Withdrawn EP1434712A1 (en) | 2001-10-11 | 2002-10-11 | Wing structure for kite-like device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1434712A1 (en) |
FR (1) | FR2830840B1 (en) |
WO (1) | WO2003031258A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8684313B2 (en) * | 2011-02-02 | 2014-04-01 | Ocean Rodeo Sports Inc. | Inflatable kite with leading edge swept forwards at wingtip |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE884431A (en) | 1979-07-19 | 1981-01-23 | Jones Andrew W | SAIL STRUCTURE |
FR2581961A1 (en) | 1984-11-16 | 1986-11-21 | Dominique Legaignoux | PROPULSIVE WING |
US5120006A (en) | 1988-10-14 | 1992-06-09 | Hadzicki Joseph R | Kite-like flying device with independent wing surface control |
US4892272A (en) | 1988-10-14 | 1990-01-09 | Hadzicki Joseph R | Kite-like flying device with dual handles and four point control |
FR2639247B1 (en) | 1988-11-24 | 1991-07-19 | Voile Systeme | WING TYPE KITE WITH INFLATABLE BOXES |
FR2698847A1 (en) | 1992-12-03 | 1994-06-10 | Legaignoux Bruno | Flexible wing line system - comprises supporting and control lines, with control lines which can be located inside hollow supporting lines for most of their length. |
FR2762583B1 (en) | 1997-04-25 | 2002-01-25 | Bruno Legaignoux | SYSTEM FOR CONTROLLING AN ELLIPSOIDAL WING GENERALLY IN THE FORM OF A SPHERICAL SPINDLE AND RETAINED BY LINES |
ATE294101T1 (en) * | 2000-02-10 | 2005-05-15 | Peter Robert Lynn | WING INFLATED BY RAMMED AIR |
DE20002570U1 (en) * | 2000-02-14 | 2000-06-08 | Schiszler, Achim, 83646 Bad Tölz | KITE |
-
2001
- 2001-10-11 FR FR0113081A patent/FR2830840B1/en not_active Expired - Fee Related
-
2002
- 2002-10-11 WO PCT/FR2002/003468 patent/WO2003031258A1/en not_active Application Discontinuation
- 2002-10-11 EP EP02800649A patent/EP1434712A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO03031258A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003031258A1 (en) | 2003-04-17 |
FR2830840A1 (en) | 2003-04-18 |
FR2830840B1 (en) | 2004-01-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20031104 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
19U | Interruption of proceedings before grant |
Effective date: 20040820 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
19W | Proceedings resumed before grant after interruption of proceedings |
Effective date: 20050502 |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE ES FR GB IT |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20051018 |