FR2671325A1 - Device for improving parapents - Google Patents
Device for improving parapents Download PDFInfo
- Publication number
- FR2671325A1 FR2671325A1 FR9100257A FR9100257A FR2671325A1 FR 2671325 A1 FR2671325 A1 FR 2671325A1 FR 9100257 A FR9100257 A FR 9100257A FR 9100257 A FR9100257 A FR 9100257A FR 2671325 A1 FR2671325 A1 FR 2671325A1
- Authority
- FR
- France
- Prior art keywords
- paraglider
- parapents
- improving
- paragliders
- wing
- 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- Withdrawn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
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000003381 stabilizer Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Toys (AREA)
- Wind Motors (AREA)
Abstract
Description
DESCRIPTION ta prés ente invention~concernffuffarachute~de à aile souple constituant une aile planante, qénéralement appelée "Parapente".DESCRIPTION your present invention ~ concernffuffarachute ~ of flexible wing constituting a planing wing, qénéralement called "Paragliding".
On connait déjà les parapentes constitués par une aile planante dont l'intrado et l'extrado sont reliés entre eux par des intercaissons Ces parties sont réalisées en toile de parachute ou bien toile de spinnaker souple. Le pilote est relié au parapente par de fines suspentes au nombre généralement de 3 à 4 par caisson.We already know the paragliders consisting of a planing wing whose lower surface and upper surface are interconnected by interconnections These parts are made of parachute canvas or flexible spinnaker canvas. The pilot is connected to the paraglider by fine lines, generally 3 to 4 per box.
Les parapentes ont un profil d'une certaine épaisseur et l'air contenu dans les caissons confère au parapente sa forme d'aile.Paragliders have a profile of a certain thickness and the air contained in the boxes gives the paraglider its wing shape.
Jusqu'à présent le parapente était entièrement souple, ce qui pose des problèmes de stabilité en vol. En effet la masse d'air est sujette à des turbulences dues aux effets du vent sur le relief (rotor) ou bien cisaillements thermiques (par les différences de température). Les turbulences déforment la voilure souple du parapente et peuvent même engendrer des fermetures partielles de celui-ci. Ces fermetures sont la cause de nombreux accidents corporels car dans ces situations le parapente devient incontrôlable. En effet une fermeture peut entraîner une autorotation du parapente sur lui-même et cela jusqu'au sol, avec des conséquences souvent dramatiques pour le pilote.Until now, the paraglider has been completely flexible, which poses problems of stability in flight. Indeed the air mass is subject to turbulence due to the effects of the wind on the relief (rotor) or thermal shears (by temperature differences). Turbulence deforms the flexible wing of the paraglider and can even cause partial closures of the paraglider. These closures are the cause of many personal accidents because in these situations the paraglider becomes uncontrollable. In fact, a closure can lead to a paraglider autorotation on itself and this to the ground, with often dramatic consequences for the pilot.
La présente invention a pour objet d'éliminer complètement les risques d'auto-rotation et ainsi de rendre beaucoup plus sûrs les parapentes. Les performances sont, elles aussi, augmentées dans des proportions non négligeables comme nous le verrons plus loin.The object of the present invention is to completely eliminate the risks of self-rotation and thus to make paragliders much safer. The performances are also increased in significant proportions as we will see later.
Le dispositif est destiné à rigidifier les parachutes du type à aile souple à caissons et plus particulièrement les parapentes (3) Il consiste en un assemblage de tubes (1) reliant les deux stabilos (2). Cet ensemble constitue une armature transversale semi- rigide très solide, dont la flexibilité est plus importante aux extrémités (7) qu'au centre (8). La matière utilisée à la réalisation du dispositif pourra être l'aluminium, la fibre de verre, la fibre de carbone, ou tout autre matériau répondant aux exigences techniques. The device is intended to stiffen the parachutes of the flexible wing type with boxes and more particularly the paragliders (3) It consists of an assembly of tubes (1) connecting the two stabilos (2). This assembly constitutes a very solid semi-rigid transverse reinforcement, the flexibility of which is greater at the ends (7) than at the center (8). The material used to make the device may be aluminum, fiberglass, carbon fiber, or any other material meeting the technical requirements.
Les tubes pourront être assemblés entre eux soit de façon télescopique, manchonnés ou maintenus par un pas de vis ou par to autre dispositif de fixation.The tubes can be assembled together either telescopically, sleeved or held by a thread or by other fixing device.
Le dispositif est introduit dans une gaine prévue à cet effet à l'intérieur du parapente (5) ou simplement à l'extérieur de celui ci dans des passants cousus spécifiquement (6).The device is introduced into a sheath provided for this purpose inside the paraglider (5) or simply outside of it in loops specifically sewn (6).
Ainsi rigidifié par le dispositif le parapente sera indéformable et insensible aux contraintes dues aux turbulences, rotors, et autres manifestations engendrées par les variations atmosphériques.Thus stiffened by the device, the paraglider will be undeformable and insensitive to the stresses due to turbulence, rotors, and other manifestations caused by atmospheric variations.
Avec des caractéristiques techniques inchangées les performances d' un parapente sont ainsi considérablement améliorées par ce dispositif ; en effet, cette armature transversale maintient sous une tension optimum le parapente et élimine de ce fait les déformations longitudinales dues aux phénomènes de compression et de décompression internes qui ont pour effet d'altérer les profils et de diminuer ainsi les performances, taux de chute et vitesse des parapentes. With unchanged technical characteristics, the performance of a paraglider is thus considerably improved by this device; in fact, this transverse reinforcement maintains the paraglider under optimum tension and thereby eliminates longitudinal deformations due to internal compression and decompression phenomena which have the effect of altering the profiles and thus reducing performance, fall rate and speed of paragliders.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9100257A FR2671325A1 (en) | 1991-01-04 | 1991-01-04 | Device for improving parapents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9100257A FR2671325A1 (en) | 1991-01-04 | 1991-01-04 | Device for improving parapents |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR2671325A1 true FR2671325A1 (en) | 1992-07-10 |
Family
ID=9408594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9100257A Withdrawn FR2671325A1 (en) | 1991-01-04 | 1991-01-04 | Device for improving parapents |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2671325A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0683096A1 (en) * | 1994-05-17 | 1995-11-22 | Michael Campbell-Jones | Paraglider |
| EP0729884A1 (en) * | 1995-03-02 | 1996-09-04 | Guillermo Lucas Martinez | Device to prevent glider parachute folds |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0023137A2 (en) * | 1979-07-19 | 1981-01-28 | Andrew Wilfrid Jones | Aerofoil structure |
| DE8709923U1 (en) * | 1987-07-20 | 1987-12-10 | Kurze, Herbert, 4787 Geseke | Paraglider |
-
1991
- 1991-01-04 FR FR9100257A patent/FR2671325A1/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0023137A2 (en) * | 1979-07-19 | 1981-01-28 | Andrew Wilfrid Jones | Aerofoil structure |
| DE8709923U1 (en) * | 1987-07-20 | 1987-12-10 | Kurze, Herbert, 4787 Geseke | Paraglider |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0683096A1 (en) * | 1994-05-17 | 1995-11-22 | Michael Campbell-Jones | Paraglider |
| EP0729884A1 (en) * | 1995-03-02 | 1996-09-04 | Guillermo Lucas Martinez | Device to prevent glider parachute folds |
| ES2130877A1 (en) * | 1995-03-02 | 1999-07-01 | Pararigide S L | Device to prevent glider parachute folds |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |