FR2614268A1 - Closed leading edge on parachute-wing - Google Patents

Closed leading edge on parachute-wing Download PDF

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Publication number
FR2614268A1
FR2614268A1 FR8705584A FR8705584A FR2614268A1 FR 2614268 A1 FR2614268 A1 FR 2614268A1 FR 8705584 A FR8705584 A FR 8705584A FR 8705584 A FR8705584 A FR 8705584A FR 2614268 A1 FR2614268 A1 FR 2614268A1
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France
Prior art keywords
wing
parachute
leading edge
inflation
closed leading
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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.)
Granted
Application number
FR8705584A
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French (fr)
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FR2614268B3 (en
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COURDE HERVE
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COURDE HERVE
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Filing date
Publication date
Application filed by COURDE HERVE filed Critical COURDE HERVE
Priority to FR8705584A priority Critical patent/FR2614268B3/en
Publication of FR2614268A1 publication Critical patent/FR2614268A1/en
Application granted granted Critical
Publication of FR2614268B3 publication Critical patent/FR2614268B3/en
Expired legal-status Critical Current

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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

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Toys (AREA)

Abstract

The invention relates to a device making it possible to enhance the aerodynamic characteristics of a wing of flexible or semi-rigid structure. It consists of the total or partial closure of the leading edge by surfaces made of fabric or flexible materials. The inflation of the closed part may take place through apertures formed laterally or on the lower and/or upper surfaces. The device according to the invention relates to wings of the parachute-wing and parapent type.

Description

BORD D'ATTAQUE FERME SUR PARACHUTE-AILE
La présente invention concerne la fermeture du bord d'attaque sur des ailes de type parachute-aile, parachute de pente.FIRING EDGE ON WING PARACHUTE
The present invention relates to the closing of the leading edge on parachute-wing type wings, slope parachute.

Traditionnellement sur les parachutes-ailes le bord d'attaque est ouvert, permettant par pression interne la mise en forme de l'aile. I1 se produit alors un vortex à l'ouverture des alvéoles ; les filets d'air se répartissant ensuite sur les surfaces d'intrados et d'extrados. Traditionally on wing parachutes the leading edge is open, allowing internal shaping of the wing. I1 then occurs a vortex at the opening of the alveoli; the air streams are then distributed over the lower and upper surfaces.

I1 y a donc perte des qualités aérodynamiques du profil d l'aile et risque de dégonflage intempestif dans certait conditions de vol. There is therefore a loss of aerodynamic qualities of the wing profile and risk of untimely deflation under certain flight conditions.

La présente invention pallie à ces inconvénients. The present invention overcomes these drawbacks.

Le bord d'attaque est partiemment ou totalement fermé par les surfaces en tissu ou matériaux souples, cette fermeture concernant une ou plusieurs alvéoles ou caissons sur l'ensemble du bord d'attaque. The leading edge is partially or completely closed by the fabric or flexible material surfaces, this closure relating to one or more cells or boxes on the entire leading edge.

L'intégralité de l'avant du profil qui est d'habitude tronqué peut être ou non respecté. The entire front of the profile, which is usually truncated, may or may not be respected.

Le gonflage ne pouvant s'effectuer par l'avant, il peut s'effectuer :
- soit latéralement quand une alvéole fermée jouxte une avéole ouverte. Des ouvertures de communication d'air pratiquées dans le tissu de maintien du profil permettent le gonflage de ou des alvéoles fermées, un système de clapet anti-retour pouvant être éventuellement utilisé pour empêcher le dégonflement,
- soit l'admission d'air peutse faire par des ouvertures pratiquées sur les surfaces d'extrados ou (et) d'extrados, ces ouvertures pouvant éventuellement être munies des clapets pré-cités,
- soit d'une combinaison de ces deux systèmes.The inflation cannot be carried out from the front, it can be carried out:
- or laterally when a closed cell adjoins an open cell. Air communication openings made in the profile retaining fabric allow the inflation of closed cell (s), a non-return valve system which can possibly be used to prevent deflation,
- either the air intake can be done through openings made on the upper surface or (and) upper surface, these openings possibly being fitted with the aforementioned valves,
- or a combination of these two systems.

Ainsi les qualités aérodynamiques du profil sont mieux respectées, les risques de dégonflage moindre et la structure générale de l'aile renforcée. Thus the aerodynamic qualities of the profile are better respected, the risks of less deflation and the general structure of the wing reinforced.

Le dispositif selon l'invention concerne tous les types d'aile à structure souple ou semi-rigide dont la mise en forme s'effectue par pression interne ou par un dispositif rigidifiant la structure et notamment les parachutes-ailes, les parachutes de pente.  The device according to the invention relates to all types of wing with a flexible or semi-rigid structure, the shaping of which is effected by internal pressure or by a device which stiffens the structure and in particular the wing parachutes, the slope parachutes.

Claims (6)

REVENDICATIONS 1) Dispositif visant à améliorer les caractéristiques aérodynamiques d'une aile de type parachute-aile, ou parachute de pente, consistant en un bord d'attaque totalement ou partiellement fermé. 1) Device intended to improve the aerodynamic characteristics of a wing of the parachute-wing type, or slope parachute, consisting of a fully or partially closed leading edge. 2) Dispositif selon la revendication 1 caractérisé en ce que cette fermeture concerne une ou plusieurs alvéoles ou caissons. 2) Device according to claim 1 characterized in that this closure relates to one or more cells or boxes. 3) Dispositif selon les revendications 1 ou 2 caractérisé en ce que le gonflage peut s'effectuer par des ouvertures de communication d'air inter-alvéoles ou inter-caissons. 3) Device according to claims 1 or 2 characterized in that the inflation can be carried out by air communication openings between cells or between chambers. 4) Dispositif selon les revendications 1 ou 2 caractérisé en ce que le gonflage peut s'effectuer par des ouvertures pratiquées dans les surfaces d'intrados ou d'extrados. 4) Device according to claims 1 or 2 characterized in that the inflation can be carried out by openings made in the lower surface or upper surface. 5) Dispositif selon les revendications 1 ou 2 caractérisé en ce qu'il combine les modes de gonflage des renvendications 3 et 4. 5) Device according to claims 1 or 2 characterized in that it combines the inflation modes of claims 3 and 4. 6) Dispositif selon l'une quelconque de ces revendications en ce que les ouvertures de communication sont équipées du système de clapets "anti-retour" permettant le gonflage et évitant le dégonflement.  6) Device according to any one of these claims in that the communication openings are equipped with the system of "non-return" valves allowing inflation and avoiding deflation.
FR8705584A 1987-04-21 1987-04-21 CLOSED EDGE ON WING PARACHUTE. Expired FR2614268B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8705584A FR2614268B3 (en) 1987-04-21 1987-04-21 CLOSED EDGE ON WING PARACHUTE.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8705584A FR2614268B3 (en) 1987-04-21 1987-04-21 CLOSED EDGE ON WING PARACHUTE.

Publications (2)

Publication Number Publication Date
FR2614268A1 true FR2614268A1 (en) 1988-10-28
FR2614268B3 FR2614268B3 (en) 1989-07-21

Family

ID=9350307

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8705584A Expired FR2614268B3 (en) 1987-04-21 1987-04-21 CLOSED EDGE ON WING PARACHUTE.

Country Status (1)

Country Link
FR (1) FR2614268B3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3943400A1 (en) * 1989-12-30 1991-07-04 Ruhfus Matthias Inflatable aerofoil for para glider - is divided into cells with majority of cells fitted with non-return valve
FR2663290A1 (en) * 1990-06-15 1991-12-20 Degraces Jacques Inflatable trailing edge cells for parachute wings
US5201482A (en) * 1991-10-30 1993-04-13 Ream Stanley M RAM air inflatable gliding wing
US6302440B1 (en) * 2000-01-25 2001-10-16 Ronald Goodstein Golf cart screen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3943400A1 (en) * 1989-12-30 1991-07-04 Ruhfus Matthias Inflatable aerofoil for para glider - is divided into cells with majority of cells fitted with non-return valve
FR2663290A1 (en) * 1990-06-15 1991-12-20 Degraces Jacques Inflatable trailing edge cells for parachute wings
US5201482A (en) * 1991-10-30 1993-04-13 Ream Stanley M RAM air inflatable gliding wing
US6302440B1 (en) * 2000-01-25 2001-10-16 Ronald Goodstein Golf cart screen

Also Published As

Publication number Publication date
FR2614268B3 (en) 1989-07-21

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