FR2668115A1 - Parapent wing incorporating inflatable elements for facilitating taking off - Google Patents

Abstract

The invention relates to a device giving parapent wings, with or without an engine, their flight profile even before their launch, dispensing with the take off run and reducing the dependency on the force of the wind and on its orientation. It consists of sealed chambers (1) reinforced by struts (2) and linked by channels (3 to 7), either as an attachable part, or integral with the wing; the assembly is inflated by a lighter-than-air gas in such a way that, when stopped, the wing is only just held vertically above the pilot.

Description

 The present invention relates to a device intended to facilitate takeoff of paragliders, with or without an engine.

 Traditionally paragliders fly from a summit or, in the plain, thanks to the action of a winch; in both cases a race against the wind is necessary to inflate the wing and give it its flight profile.

 when they are equipped with an engine, the process is identical, but the previous stroke is shortened, the wind produced by the propeller participating largely in the taking of their shape by the wings.

 The device according to the invention tends to give the wings their flight profile from before takeoff; the initial stroke is therefore practically reduced to nothing; in addition the machines are much less dependent on the force and the orientation of the wind.

 To this end, the partitioning partitions of the boxes consist of two walls forming a sealed chamber (1) intended to be pressurized with a gas lighter than air, such as hydrogen, either from an installation on the ground, either from a high pressure bottle carried by the machine; the upward force to which one tends is equivalent to the weight of a wing and its shrouds.

 According to particular embodiments, neither exclusive nor necessary, both although they are all shown on the accompanying board: 1 / the chambers (1) are advantageously provided with spacers (2) in inelastic fabric intended to limit their extension; iaent spacers can also be arranged along the vertical axial plane of the boxes to maintain their shape (fig. i) 2 / the chambers (1) are connected by conduits of the same material arranged across the boxes; the positions may be median, (3), on the floor of the calissons, at the front, (4), at the rear, (5), or against the ceiling of the caissons, in (6); these conduits are extended at (7) in the lateral parts of the rail, beyond the boxes.

3 / the sealed chambers and their connecting conduits are advantageously made of elastic fabric intended, at rest, to retract so that their volume is reduced to nothing, so that in the event of a leak or deliberate evacuation of the gas is avoided everything excessively excessive.

Claims (4)

1 / Paragliding wings, with or without motor, intended  born to allow takeoff on very short  distances, characterized in that rooms  waterproof, established between the boxes, connected  by one or more tubular conduits (nos. 3 to 6); are pressurized with lighter gas  that air, thus giving them their flight profile  from before they leave. 2 / Device according to the claim i characterized  in that the chambers and / or the boxes are provided with spacers intended to give the wings  some stiffening. 3 / Device according to any one of the claims  previous tions characterized in that the ca  markings (4) (5) and / or (6) are extended at (7) in the lateral parts of the wings. 4 / Device according to any one of the claims  previous actions characterized in that the  chambers and tubular conduits are made  made of elastic material.