DE2316146A1 - PARACHUTE WITH GLIDING PROPERTIES - Google Patents

Description

Applicant: VEB Bekleidungswerke Seifhennersdorf DDE 8812 Seifhennersdorf, Nordstr. 4o

Parachute with gliding properties

The invention relates to a parachute with gliding properties clay of round oval shape, in which the apex is drawn in by one or more special lines in the direction of the load, which improved through Sliding properties, low deployment forces and good stability.

It is known that pulling in the crown of a round parachute can increase the load-bearing capacity, and that the glide properties that are common to round Caps are created by a system of slots and openings, thereby improving. Therefore will for many parachutes where gliding properties are desired, the method of pulling in the crown used, for example in almost all sport parachutes currently in use, although this also increases the Unfolding forces occur.

To allow air to flow through the slots and openings Reinforcing and thereby improving the gliding properties is mostly used in the manufacture of the parachute canopy Very low porosity fabric used. However, this has the disadvantage that the development shock forces which act on the load during the deployment process of the parachute canopy, are increased again and for Part of exceeding the limit of tolerability.

309847/0362

2316H6

The controllability of such parachutes -is achieved that duroh special control lines the slots and Openings are partially closed or otherwise changed · Due to the low porosity of the cap fabric is formed by closing the slots and openings an excess of air under the canopy, which from the underside of the canopy drains irregularly · This is the reason why all known sports parachutes of this type become more or less restless when steering and start to commute

It is therefore the purpose of the invention to provide a canopy, which improved sliding _t ge '- rings opening shock forces and control maneuvers and good stability has · -

The main objective of creating such a parachute canopy is, above all, to improve upon it the previously known systems of slots and openings to be achieved with a parachute with the vertex drawn in According to the invention this is done in that the drafted Part of the apex is provided with an opening on the front, through which a free air outlet after the rear part of the parachute canopy can be done · At the hitherto known systems, slots and openings are only present in the area of the cap that is not retracted Part of the vertex belongs: It is, however, very useful to also have this part with a corresponding opening to provide · ■.

Due to the sliding properties, the flow hits b.eim Slide through the air diagonally from the front onto the canopy, that means that they are almost perpendicular to the front half of the curved part of the apex flows up

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2316U6

these with an opening 'ao decreases that Resistance, which improves the sliding properties The area of this opening has a size which significantly exceeds the area of normal apex openings in parachutes with a round canopy. As a result this opening when deploying the parachute canopy, especially in the initial stage, Significantly more air escapes than is possible with the previously known parachute canopies, resulting in a reduction the intfolding shock forces occurs · Since furthermore these opening is uncontrolled, i.e. its size is not changed when the control lines are operated, a Control maneuvers under the canopy resulting in excess air also flow better, which improves the stability of the parachute canopy even during steering maneuvers

The invention is to be based on an embodiment. game are explained in more detail. Show in the accompanying drawing;

Fig ·; 1ί parachute canopy with sliding properties and integrated " pulled vertex in cross section, seen from the left side,

Fig. 2 .; A similar parachute canopy with the inventions ⁿ to the invention opening in the recessed portion of the apex,

Fig. 3x top view of an expanded parachute canopy "with an opening according to the invention in the retracted Part of the crown

For a better overview, the commonly used slots are and openings for generating sliding properties in the Drawing omitted. The arrow shows the flow towards the canopy when gliding through the air

309847/0362

2316U6

According to the drawing, a parachute canopy with sliding properties 1 and suspension lines 2 of the apex 3 by one or more special lines 4 in the direction of the load 5 pulled in. When gliding through the air, the flow hits the front of the drawn-in part of the vertex approximately perpendicular.It is therefore advisable to to attach an opening 6 at this point, through which a free air outlet to the rear part of the Parachute canopy "can be done · This reduces the resistance and the gliding properties are improved ·

But that's not the only advantage, because the area this opening is significantly larger than that Area, "the one at the apex openings of such parachute canopies is normal, so that, especially in the initial stage of development, there is significantly more air than before known parachute canopy can escape · As a result, the deployment no longer occurs suddenly, so that the Decrease in development impulses

The opening 6 according to the invention brings about control maneuvers Another advantage is that any excess air that is created under the cap can flow away better, which means that the stability properties are improved

309847/0362

Claims (1)

2316H6 Patent entitlement: Parachute with sliding properties of a round canopy (1), in which the vertex (3) by one or more special lines (4) in the "direction of the Load (5) is retracted, characterized in that the retracted part of the apex on the front is provided with an opening (6) through which a free air outlet to the rear part the parachute canopy can be done » 309847/0362