FR2749563A1 - Parachute with transverse inflatable tube - Google Patents
Parachute with transverse inflatable tube Download PDFInfo
- Publication number
- FR2749563A1 FR2749563A1 FR9607386A FR9607386A FR2749563A1 FR 2749563 A1 FR2749563 A1 FR 2749563A1 FR 9607386 A FR9607386 A FR 9607386A FR 9607386 A FR9607386 A FR 9607386A FR 2749563 A1 FR2749563 A1 FR 2749563A1
- Authority
- FR
- France
- Prior art keywords
- ribs
- wing
- parachute
- inflatable tube
- rib
- 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- Withdrawn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
- 239000000725 suspension Substances 0.000 abstract description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C3/00—Wings
- B64C3/30—Wings comprising inflatable structural components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D17/00—Parachutes
- B64D17/02—Canopy arrangement or construction
- B64D17/025—Canopy arrangement or construction for gliding chutes
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Toys (AREA)
Abstract
Description
PARAPENTE AVEC BOUDIN GONFLABLE TRANSVERSAL
La présente invention concerne un parachute du type à aile souple à caisson constituant une aile planante, généralement appelé parapente, et plus particulièrement un perfectionnement relatif à la structure de ce type de parachute.PARAGLIDER WITH TRANSVERSE AIR BAG
The present invention relates to a parachute of the flexible wing type with box constituting a planing wing, generally called a paraglider, and more particularly an improvement relating to the structure of this type of parachute.
On connaît déjà de tels parachutes constitués par une aile planante dont la voilure est formée par une paroi souple supérieure ou extrados reliée à une paroi souple inférieure ou intrados par des nervures délimitant ainsi des caissons sensiblement parallèles s'étendant du bord d'attaque au bord de fuite de ladite aile. Celle-ci comprend également des suspentes fixées au voisinage de la paroi inférieure sur les nervures ou au niveau de celles-ci, lesdites suspentes permettant l'arrimage d'une charge, notamment un parachutiste, qui, par le biais de drisses de commande, dirige l'aile par déformation de celle-ci. We already know of such parachutes constituted by a planing wing whose wing is formed by an upper flexible wall or upper surface connected to a lower flexible wall or lower surface by ribs thus delimiting substantially parallel boxes extending from the leading edge to the edge leakage of said wing. This also includes lines attached in the vicinity of or at the level of the lower wall on the ribs, said lines allowing the securing of a load, in particular a paratrooper, which, by means of control halyards, steers the wing by deformation thereof.
Dans les parachutes de l'art antérieur, chaque caisson est limité latéralement par des nervures d'où partent les suspentes. Avec une telle disposition, la dépression sur la paroi supérieure et la pression sur la paroi inférieure de l'aile provoquent un rapprochement des suspentes, et donc des nervures. Cela a pour effet de donner à la paroi supérieure et à la paroi inférieure une forme ondulée de nervure en nervure. La voilure présente donc dans ces conditions un mauvais profil, qui détruit les performances aérodynamiques de l'aile, et donc les capacités de vol. On peut noter que, pour améliorer la forme aérodynamique de l'aile on pourrait augmenter le nombre de suspentes, mais cela apporterait d'autres inconvénients. Par ailleurs, il peut arriver que lors du vol, il y ait un rapprochement intempestif de deux nervures, ce qui présente pour l'utilisateur un risque important de chute. In the parachutes of the prior art, each box is bounded laterally by ribs from which the lines leave. With such an arrangement, the depression on the upper wall and the pressure on the lower wall of the wing cause the lines, and therefore the ribs, to come together. This has the effect of giving the upper wall and the lower wall an undulating shape from rib to rib. The wing therefore has a poor profile under these conditions, which destroys the aerodynamic performance of the wing, and therefore the flight capabilities. It can be noted that, to improve the aerodynamic shape of the wing, the number of lines could be increased, but this would bring other drawbacks. Furthermore, it may happen that during the flight, there is an untimely coming together of two ribs, which presents for the user a significant risk of falling.
L'aile planante selon l'invention se propose de résoudre cet inconvénient par des moyens simples et fiables permettant d'accroître les qualités aérodynamiques de l'aile et sa sécurité. The planing wing according to the invention proposes to resolve this drawback by simple and reliable means making it possible to increase the aerodynamic qualities of the wing and its safety.
Ainsi le parachute est du type aile planante et comprend d'une part, une voilure constituée par une paroi supérieure ou extrados reliée à une paroi inférieure ou intrados par des parois verticales ou nervures délimitant des caissons sensiblement parallèles dont au moins certains sont ouverts au bord d'attaque et s'étendent jusqu'au bord de fuite et, d'autre part, des faisceaux de suspentes reliant la voilure au harnais du parachutiste, et est caractérisé en ce que l'écartement entre les nervures est maintenu par un boudin gonflable qui s'étend transversalement entre l'intrados et l'extrados sensiblement parallèlement au bord d'attaque. Thus the parachute is of the planing wing type and comprises, on the one hand, a wing formed by an upper wall or upper surface connected to a lower wall or lower surface by vertical walls or ribs delimiting substantially parallel boxes, at least some of which are open at the edge. and extend to the trailing edge and, on the other hand, bundles of lines connecting the canopy to the parachutist's harness, and is characterized in that the spacing between the ribs is maintained by an inflatable tube which extends transversely between the lower surface and the upper surface substantially parallel to the leading edge.
Selon une caractéristique complémentaire, le boudin gonflable possède au niveau de chaque nervure un étranglement de section dont le diamètre (D) correspond au diamètre (d) d'un trou, réalisé dans la nervure, qu'il traverse. According to an additional characteristic, the inflatable tube has at each rib a section constriction whose diameter (D) corresponds to the diameter (d) of a hole, made in the rib, which it crosses.
D'autres caractéristiques et avantages de l'invention se dégageront de la description qui va suivre en regard des dessins annexés qui ne sont donnés qu'à titre d'exemples non limitatifs. Other characteristics and advantages of the invention will emerge from the description which follows with reference to the appended drawings which are given only by way of nonlimiting examples.
La figure 1 représente en perspective un parachute en vol du type aile planante selon l'invention. Figure 1 shows in perspective a parachute in flight of the planing wing type according to the invention.
La figure 2 représente ladite aile planante sans l'intrados en perspective vue de dessous. FIG. 2 represents said planing wing without the pressure surface in perspective seen from below.
Les figure 3 et 3a représente un détail de la voilure en coupe selon un plan P transversal de l'aile. Figures 3 and 3a shows a detail of the wing in section along a transverse plane P of the wing.
L'aile planante (1) selon un mode de réalisation préféré de l'invention est donc constituée d'une voilure (2) supportant, par le biais d'un faisceau de suspente (3), un parachutiste (4). Ladite voilure (2) est de façon connue en soi, formée d'une paroi souple supérieure ou extrados (5) et d'une paroi souple inférieure ou intrados (6) lesdites parois (5, 6) sont reliées entre elles par des nervures (7) de manière connue en soi, formant ainsi une succession de caissons (8) s'étendant sensiblement parallèlement du bord d'attaque (9) au bord de fuite (10). Lesdits caissons (8) présentent une ouverture (11) sur le bord d'attaque (9), de manière à pouvoir se remplir d'air et créer pendant le vol une zone de pression stationnaire au niveau du bord d'attaque (9). The planing wing (1) according to a preferred embodiment of the invention therefore consists of a wing (2) supporting, by means of a suspension beam (3), a paratrooper (4). Said blade (2) is in a manner known per se, formed by an upper flexible wall or upper surface (5) and a lower flexible wall or lower surface (6) said walls (5, 6) are interconnected by ribs (7) in a manner known per se, thus forming a succession of boxes (8) extending substantially parallel from the leading edge (9) to the trailing edge (10). Said boxes (8) have an opening (11) on the leading edge (9), so as to be able to fill with air and during the flight create a stationary pressure zone at the leading edge (9) .
Selon le mode de réalisation préféré de l'invention, lesdites nervures (7) sont traversées par un boudin gonflable transversal (12) s'étendant transversalement d'un bord latéral (13a) à l'autre (13b) entre l'intrados et l'extrados (5). Ledit boudin (12) possède avantageusement une section circulaire variable et s'étend transversalement sensiblement parallèlement au bord d'attaque (9) de ladite aile (1). Sa section augmente d'un bord (13a) vers le milieu de l'aile puis décroît jusqu'à l'autre bord (13b) comme le montre la figure 2
Le boudin (12) possède au niveau de chaque nervure (7a) un étranglement (15) de section dont le diamètre (D) est ajusté respectivement au diamètre (d) d'un trou (14a) de ladite nervure (7a) qu'il traverse; il possède entre deux nervures (7a, 7b) un diamètre D1 supérieur aux diamètres D2, D3 des trous (14a, 14b) de ces deux nervures (7a, 7b), tel qu'illustré figure 3 et 3a. Ainsi, lorsque ledit boudin (12) est gonflé, il permet de maintenir l'écartement respectif entre chaque nervure (7) et donc permet de servir de structure ou d'armature à ladite aile planante (1) en forçant lesdites nervures (7) à se maintenir au niveau du rétrécissement ou étranglement de section (15).According to the preferred embodiment of the invention, said ribs (7) are crossed by a transverse inflatable tube (12) extending transversely from one side edge (13a) to the other (13b) between the lower surface and the upper surface (5). Said flange (12) advantageously has a variable circular section and extends transversely substantially parallel to the leading edge (9) of said wing (1). Its section increases from one edge (13a) towards the middle of the wing then decreases to the other edge (13b) as shown in Figure 2
The flange (12) has at each rib (7a) a constriction (15) of section whose diameter (D) is adjusted respectively to the diameter (d) of a hole (14a) of said rib (7a) that he crosses; it has between two ribs (7a, 7b) a diameter D1 greater than the diameters D2, D3 of the holes (14a, 14b) of these two ribs (7a, 7b), as illustrated in FIG. 3 and 3a. Thus, when said tube (12) is inflated, it makes it possible to maintain the respective spacing between each rib (7) and therefore makes it possible to serve as a structure or frame for said planing wing (1) by forcing said ribs (7). to maintain itself at the level of the narrowing or constriction of section (15).
Bien entendu, l'invention n'est pas limitée aux modes de réalisation décrits et représentés à titre d'exemples, mais elle comprend aussi tous les équivalents techniques ainsi que leurs combinaisons. Of course, the invention is not limited to the embodiments described and shown by way of examples, but it also includes all the technical equivalents and their combinations.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9607386A FR2749563A1 (en) | 1996-06-10 | 1996-06-10 | Parachute with transverse inflatable tube |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9607386A FR2749563A1 (en) | 1996-06-10 | 1996-06-10 | Parachute with transverse inflatable tube |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2749563A1 true FR2749563A1 (en) | 1997-12-12 |
Family
ID=9493044
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9607386A Withdrawn FR2749563A1 (en) | 1996-06-10 | 1996-06-10 | Parachute with transverse inflatable tube |
Country Status (1)
Country | Link |
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FR (1) | FR2749563A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011155850A1 (en) * | 2010-06-02 | 2011-12-15 | Aquadria Kite Design Limited | Inflatable wing with inflatable spar spaced from the leading edge |
WO2012005600A1 (en) * | 2010-06-02 | 2012-01-12 | Aquadria Kite Design Limited | An inflatable wing with inflatable leading edge spar and rib(s) in the form of inflatable truss(es) |
EP3368418A4 (en) * | 2015-10-30 | 2019-05-29 | Airborne Systems North America of NJ Inc. | Parachute slider with stiffening elements |
-
1996
- 1996-06-10 FR FR9607386A patent/FR2749563A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011155850A1 (en) * | 2010-06-02 | 2011-12-15 | Aquadria Kite Design Limited | Inflatable wing with inflatable spar spaced from the leading edge |
WO2012005600A1 (en) * | 2010-06-02 | 2012-01-12 | Aquadria Kite Design Limited | An inflatable wing with inflatable leading edge spar and rib(s) in the form of inflatable truss(es) |
EP3368418A4 (en) * | 2015-10-30 | 2019-05-29 | Airborne Systems North America of NJ Inc. | Parachute slider with stiffening elements |
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