FR2593773A1 - Method and installation allowing air braking of ultralight gliders - Google Patents

Method and installation allowing air braking of ultralight gliders Download PDF

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Publication number
FR2593773A1
FR2593773A1 FR8601544A FR8601544A FR2593773A1 FR 2593773 A1 FR2593773 A1 FR 2593773A1 FR 8601544 A FR8601544 A FR 8601544A FR 8601544 A FR8601544 A FR 8601544A FR 2593773 A1 FR2593773 A1 FR 2593773A1
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France
Prior art keywords
flexible
wing
installation according
glider
gliders
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Withdrawn
Application number
FR8601544A
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French (fr)
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Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to FR8601544A priority Critical patent/FR2593773A1/en
Publication of FR2593773A1 publication Critical patent/FR2593773A1/en
Withdrawn legal-status Critical Current

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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
    • B64C31/0285—Safety devices

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Curtains And Furnishings For Windows Or Doors (AREA)

Abstract

The present invention relates to ultralight aeronautics and, in particular, to ultralight gliders, called "free wings" or "hang gliders", controlled by movement of the body. It relates in particular to a method which consists in actuating a cable or cord 2, which, in its turn, actuates flexible surfaces 1 which put themselves in a position such that they slow the machine down and allow it to have an increased rate of descent (reduction in the lift-to-drag ratio). The invention also relates to an installation for implementing this method. The installation according to the invention comprises one or more surfaces of canvas or flexible material 1 fastened by one part to the wing and normally flattened against it, fastened by the other end to a small cord (or cable) 2 which, when pulled by the pilot, positions the flexible surfaces 1 in such a way that they act as air brakes.

Description

!;t présente invention concerne un procedé et une instal
lation visant à faciliter l'approche et l'atterrissage
tes planeurs ultra-légers pilotés par l'homme.The present invention relates to a method and an instal
lation to facilitate approach and landing
your ultra-light human-controlled gliders.

En effet,les planeurs ultra-légers(ou ailes libres(plia
bles,à voilure souple)ont de plus en plus de finesse ou
de pénétration et ont,de ce fait du mal à se contenter de
terrains exigus.Indeed, the ultra-light gliders (or free wings (folded
bles, flexible wing) have more and more finesse or
penetration and therefore find it difficult to be satisfied with
cramped land.

La presente invention a pour objet un procédé =destiné à
diminuer la finesse,et donc augmenter,de fanon momentanée
t modulable,le taux de chute desdits planeurs ultra-legers. The subject of the present invention is a process = intended for
decrease the fineness, and therefore increase, of momentary dewlap
t modular, the fall rate of said ultra-light gliders.

Le procédé selon l'invention consiste en une(ou des)surfa
ces de toile ou autres surfaces souples fixées par leur
extrémité avant à l'intrados ou à l'extrados de l'aile non
loin du centre de sustentation et non loin de l'axe de il'appareil.Le reste de la surface en question est libre
et vient donce en vol normal se plaquer contre l'intrados
ou l'extrados de l'aile. The method according to the invention consists of one (or more) surfa
these canvas or other flexible surfaces fixed by their
front end on the underside or extrados of the wing not
far from the lift center and not far from the axis of the device. The rest of the surface in question is free
and then comes in normal flight to press against the lower surface
or the upper surface of the wing.

Des cables(ou cordelettes)fixées à tarrière de la surface
permettent de l'étendre en travers du lit du vent afin
d'obtenir l'effet de freinage désiré. Cables (or cords) attached to the hole in the surface
allow it to spread across the wind bed so
achieve the desired braking effect.

La présente invention a également pour objet de concevoir
une installation pour la mise en oeuvre du procédé selon
la description suivate:une surface souple(1) (de toile non
poreuse préférentiellement)est attachée transversalement
selon un de ses bords contre l'intrados de l'appareil,en
suivant approximativement la ligne de la résultante de
sustentation,ceci prbs da l'axe de symétrie de l'appareil.The present invention also aims to design
an installation for implementing the method according to
the following description: a flexible surface (1) (of canvas not
preferably porous) is attached transversely
along one of its edges against the lower surface of the device, in
approximately along the line of the resultant of
lift, this near the axis of symmetry of the device.

Les trois autres bords sont libres par rapport à l'aile. The other three edges are free relative to the wing.

On Deut se figurer la description en disant qu'on a accro
ché un drapeau sous l'aile.We should imagine the description saying that we have addicted
cheered a flag under the wing.

Tout a l'arrière de la surface souple se trouve un dispo
sitif souple ou rigide permettant d'accrocher un ou des
cables(ou cordelettes) à ladite surface,afin,en la ramenant progressivement vers le bas et l'avant,de la trens
former en aéro-frein(2).At the very back of the flexible surface is a dispo
flexible or rigid sitive allowing to hang one or more
cables (or cords) on said surface, in order, gradually bringing it down and forward, of the trens
train in air brake (2).

Selon un dispositif préférentiel,des petites surfaces de
tissus auto-accrochant sont fixées en vis-d vis a et là
(de préférence à l'arrière) à la voilure principale et
la surface souple (I )pour éviter les flottements en vol. According to a preferential device, small areas of
self-adhesive fabrics are fixed opposite a and there
(preferably aft) at the main wing and
the flexible surface (I) to avoid floating in flight.

Selon un dispositif préférentiel.la surface souple servant d'aéro-frein peut varier en surface de 0,2 à 3 mètres carrés,comptés en surface frontale,dispositif totalement déployé.According to a preferred device, the flexible surface serving as an air brake can vary in surface from 0.2 to 3 square meters, counted in front surface, device fully deployed.

Selon un dispositif préférentiel,des trous sont percés à l'arrière(bord de fuite)de la surface souple,relies e deux cordelettes (2)qui passent de chaque cdté du pilote, vers la base du trapeze,en se rejoignant devant le pilote
u niveau de la barre horizontale de contrôle,les renvois pouvant s'effectuer par anneaux ou poulies,
Selon ce dispositif.l'actionnement du procédé se fait en prenant la cordelette(cable)qui passe le long de la@bar- re de contrôle,en la mettant dans la bouche,ou darrièrre le casque,ou derrière les paules,ou sous le pied,et en tirent plus ou moins à fin de moduler le freinage.According to a preferred device, holes are drilled at the rear (trailing edge) of the flexible surface, connected to two cords (2) which pass from each side of the pilot, towards the base of the trapeze, joining in front of the pilot
u level of the horizontal control bar, returns can be made by rings or pulleys,
According to this device. The actuation of the process is done by taking the cord (cable) which passes along the control bar, by putting it in the mouth, or behind the helmet, or behind the shoulders, or under the foot, and draw more or less to modulate the braking.

Selon un dispositif secondaire,il est possible de divi- ser en deux la surface de freine de façon a éviter la gene due à la quille de l'appareil.According to a secondary device, it is possible to divide the brake surface in half so as to avoid discomfort due to the keel of the device.

Selon un dispositif secondaire,il est possible d'attae cher les cordelettes(le cable)de commande à une partie du harnais ou du pilote.According to a secondary device, it is possible to attach the control cords (cable) to part of the harness or of the pilot.

Selon un dispositif secondaire,il est possible d'obtenir le même effet en fixant la surface souple (1)'à@l'extra- dos de l'aile et en l'actionnant par des cables(cordalet- tes)fixées à son extrêmité arrière,cordelettes renvoyées en tÊte de mat supérieur ou sur les cables supérieurs, puis descendant jusqu'au pilote par le puits de mét afin de réaliser la commande du dispositif.According to a secondary device, it is possible to obtain the same effect by fixing the flexible surface (1) ′ to the @ extra side of the wing and by actuating it by cables (cords) fixed to its rear end, cords returned at the top of the mast or on the upper cables, then down to the pilot by the met well to carry out the control of the device.

Chacun des dispositifs ci-dessus,isolés ou ensemble, peuvent être installés sur des planeurs ultra-légers neufs ou Être adaptés à des appareils déJa utilisés. Each of the above devices, isolated or together, can be installed on new ultra-light gliders or be adapted to devices already used.

Claims (10)

REVENDICATIONS 1)Procédé pour aéro-freiner les planeurs ultra-légers caractérisé en ce qu'il consiste à actionner une surface afin de la positionner de façon à ce quSelle oppose une résistance aérodynamique à l'avancement du planeur.1) A method for air-braking ultra-light gliders, characterized in that it consists in actuating a surface in order to position it so that it offers aerodynamic resistance to the advance of the glider. Cette surface et ses moyens de commande doivent Être souples sauf raidissement du bord de fuite@ de ladite surface. This surface and its control means must be flexible except stiffening of the trailing edge @ of said surface. 2)Installation pour la mise en oeuvre du procédé selon la revendication 1 caractérisée,en référence aux flgures,en ce qu'elle comporte une surface souple(1) attachée par son bord antérieur à l'intrados de la voilure,des(2') cordelettes(ou cables)étant fixées au bord postérieur, puis passant par la base du trapèze pour pouvoir Être actionnées par une traction du pilote,soit manuelle, soit par une autre partie du corps ou du harnais du pilote.2) Installation for the implementation of the method according to claim 1 characterized, with reference to the flgures, in that it comprises a flexible surface (1) attached by its front edge to the lower surface of the airfoil, (2 ' ) cords (or cables) being fixed to the rear edge, then passing through the base of the trapezoid in order to be actuated by a traction of the pilot, either manually, or by another part of the body or of the harness of the pilot. 3)Installation suivant les revendications 1 eA 2 careeté risée en ce que la surface souple est divisée en deux ou plusieurs parties de façon à s'accomoder de la configuration du planeur ultra-léger.3) Installation according to claims 1 eA 2 careity laughed in that the flexible surface is divided into two or more parts so as to accommodate the configuration of the ultra-light glider. 4)Installation suivant les revendications 1,2,et 3 caractérise en ce que la ou les surfaces souples sont de formes veriables et(ou)percées de fentes ou des trous.4) Installation according to claims 1,2, and 3 characterized in that the flexible surface or surfaces are of verifiable shapes and / or pierced with slots or holes. 5)Install@tion suivant les revendications 1 à 4 caracté; risée n ce que l'accrochage avant de la voile souple à la voilure du planeur ultra-léger est permanente(couture). 5) Install @ tion according to claims 1 to 4 character; laughing n that the front attachment of the flexible sail to the wing of the ultra-light glider is permanent (sewing). 6)Installation suivant les revendications 1 à 4 caractérisée en ce que ltaccrochage de l'avant de la surface souple à la voilure du planeur ultra-léger se fait au moyen d'un dispositif dégrafable:tissus auto-accrochannt, fermature-éclair,ou dispositif similaire.6) Installation according to claims 1 to 4 characterized in that ltaccrochage the front of the flexible surface to the wing of the ultralight glider is done by means of a removable device: self-hanging fabrics, zipper, or similar device. 7)Installation suivant les revendications 1 à 6 caractéri se en ce que le point d'accrochage de la surface souple aéro-freinante se situe non loin de l'axe de symétrie du planeur et non loin du centre des résultantes aérodynami ques(centre de poussée ou de sustentations) de l'aile. 7) Installation according to claims 1 to 6 characterized in that the attachment point of the flexible air-braking surface is located not far from the axis of symmetry of the glider and not far from the center of the aerodynamic results (center of thrust or lift) of the wing. 8)Installation suivant les revendications 1 à 7 caractérisée en ce que des surfaces de faibles dimensions de tissus @@@o-accrochant fixées d'une part à la surface souple aéro-freinante,d 'autre part à l'aile,en vis-à-vis, évitent,en vol,les flottements de la surface souple,sans gÊner la mise en oeuvre du dispositif.8) Installation according to claims 1 to 7 characterized in that small fabric surfaces @@@ o-hanging attached on the one hand to the flexible air-braking surface, on the other hand to the wing, screw vis-à-vis, avoid, in flight, the floating of the flexible surface, without interfering with the implementation of the device. 9)Installations suivant les revendications 1,3,4,5j6,7 et8 caractérisée en ce que la surface souple est fixée par son bord antérieur à l'extrados de la voilure,des cordelettes(ou cables)étant fixées au bord postérieur,permettant,par un renvoi en tête de mat supérieur(ou des renvois sur les cibles supérieurs) ,de ramener ce bord postérieur vers l'avant et le haut pour obtenir effet recherché.(Fig 3 et 4).9) Installations according to claims 1,3,4,5j6,7 et8 characterized in that the flexible surface is fixed by its front edge to the upper surface of the wing, cords (or cables) being fixed to the rear edge, allowing , by a reference at the top of the upper mast (or references on the upper targets), to bring this rear edge forwards and upwards to obtain the desired effect (Fig 3 and 4). 10)Installation suivant les revendications I à 9,caractéri- sée par le raidissement de la partie postérieure de la surface souple aéro-freinante par le moyen d'une baguette rigide amovible ou non. 10) Installation according to claims I to 9, characterized by the stiffening of the rear part of the flexible air-braking surface by means of a rigid rod removable or not.
FR8601544A 1986-02-03 1986-02-03 Method and installation allowing air braking of ultralight gliders Withdrawn FR2593773A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8601544A FR2593773A1 (en) 1986-02-03 1986-02-03 Method and installation allowing air braking of ultralight gliders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8601544A FR2593773A1 (en) 1986-02-03 1986-02-03 Method and installation allowing air braking of ultralight gliders

Publications (1)

Publication Number Publication Date
FR2593773A1 true FR2593773A1 (en) 1987-08-07

Family

ID=9331810

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8601544A Withdrawn FR2593773A1 (en) 1986-02-03 1986-02-03 Method and installation allowing air braking of ultralight gliders

Country Status (1)

Country Link
FR (1) FR2593773A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284518A1 (en) * 1974-09-11 1976-04-09 Samy Gouda Anti-stall device for hang glider - with drawlines to front parts of sail panel to alter sail angle
FR2337662A1 (en) * 1976-01-08 1977-08-05 Dalmet Michel Hang glider with air brake - has vertical member carrying pocket controlled by Bowden cable and can pull glider out of dive
DE3206581A1 (en) * 1982-02-19 1983-09-01 Karl 1000 Berlin Wunderlich Hang glider with a small upper sail which acts as an elevator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284518A1 (en) * 1974-09-11 1976-04-09 Samy Gouda Anti-stall device for hang glider - with drawlines to front parts of sail panel to alter sail angle
FR2337662A1 (en) * 1976-01-08 1977-08-05 Dalmet Michel Hang glider with air brake - has vertical member carrying pocket controlled by Bowden cable and can pull glider out of dive
DE3206581A1 (en) * 1982-02-19 1983-09-01 Karl 1000 Berlin Wunderlich Hang glider with a small upper sail which acts as an elevator

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