DE8709923U1 - Paraglider - Google Patents

Description

nerbert &Lgr;-urze Geseke ,

Great !/,eastern Land*wehr 1 on 16.07.8?

Geseke

Paraglider

Paragliders according to the preamble of claim 1 are single-seat, motorless, non-rigid aircraft which are aerodynamically controlled and which take off from the earth's surface without any air flow. These paragliders, or better known as paragliders, consist of a ^fabric structure which is flat when fully inflated and consists of the upper sail (4), the lower sail (4) and a hip (8) sewn in perpendicularly to it. These conventional paragliders are inflated by the dew air entering through the air openings (3), which the ribs (6)

j· given irofil t.ildet. Liehe rig. 1.

"■ These paragliders, mostly made of wing-like

They are made from parachutes and have certain risks when used as arresting gliders. Aerodynamically designed parachutes have certain disadvantages.

\ The paragliding industry is divided into

^f some i points from the 'iet,smoke of a &igr; lajhensprungf ·: Ii-

schirrr.s, which should be heard in the right direction. The &ogr; start takes place at Y\xu, the track is nuLbo quickly and easily: .. carrying out ironing. The Lanuci.1- tz should be reached L,i :hfii·. The track in the L &ogr; a £ ^; ;uU line C ^r 1'-'it number, -i nkgeochv. indi^kexl,/ aui'wei^en.

Flying with gliding wings is also possible in the trough and in the slopes, in order to fly smoothly over rough, _wet or overland terrain. Gliding wings therefore maintain their profile and surface even in turbulence.

< I 4« it «·<· tti i H

t i i iii » t « ·

i φ · 4 j M ■

4« ( I · · < it j*

I I I 1 I I ' 4 1 4 II* I &mdash;2 &mdash;

keep shape*

To improve take-off behavior and flying at high angles of attack, rod- and surface-shaped reinforcements of the ram air openings (13) are known, which are described in utility model G 8632801.8. Paragliders with these devices eliminate many of the disadvantages of conventional paragliders, but still need a lot of ram air to form the profile.

Iitn rH &ogr;&Igr;,&ogr;&idiagr; o-fctmo· cmj ofhnVion &ohgr;&ogr;&tgr;>&Lgr;&ogr;&eegr; hon oiniiron fil oi t&mdash; -_ __ _ ______&mdash; _o __ __.._.._.- .. __ _ ___ __.._ _&ogr; _.. -----

The outer sails (3) are attached to the leading edge of the wing far towards the lower sail (4) in order to reduce the frontal area of the ram air openings (13). This entails the risk that the upper sail (3) will be crushed by downdraft gusts. The outer parts of the paraglider can fold down, which leads to a loss of controllability and a dangerously high tilt rate. At low altitudes, this can lead to a crash. A device is also known from German patent application G 8632801*8 which supports and stiffens the formation of a closed profile nose (11). A device is known from German patent application JE 3^21194 which is intended to improve the profile shape in the nose area. This is an elastic molded body that forms a trofil nose (11) and creates resistance to the air forces that arise. Another problem with conventional paragliders is the so _- called permanent stall. This is a stationary stall with a high sink rate that is difficult or impossible to counteract. The "permanent stall" is probably caused by a pressure point migration towards the leading edge of the wing. The upper sail (3) is sucked up and remains stable in the area of the front suspension lines because the curvature causes a flow separation.

Il ti Ii «It· · » lilt

It· « · · ti «

Il III · · · · ti

-11114 ti · ·· *

It is the object of this invention to improve the state of the art described, the safety and performance should be improved. This object is achieved by the characterizing features of claim (1) and in that a flexible stub (1) is inserted in the span direction into the closed profile nose (11) _which , as it reaches up to the leech (5), forms an edge arch (12) and, due to the bend at the surface ends,

&ngr;&agr;,&sgr;&ogr;&ugr;&ugr;&agr;&ugr;&ogr;&ogr;&ngr;.'/<&agr;.&sgr;&igr;&sgr;vuct&mdash; uiiu. «uudj.ddj,oj. \jr '&lgr;

tense.

The otab (1) stiffens the trofil nose against the occurring dynamic pressure and provides resistance against vertical disturbances.

The formation of the edge wing (12) results in an aerodynamically favorable wing tip. The induced resistance is considerably reduced compared to conventional rectangular wing tips. This means a not insignificant increase in performance. The rod (1) is fixed in the wing nose (11) by a pocket (6) made of textile fabric.

By pulling the line (2) into the leech (5) and connecting it to the ends of the rod (1), a better position of the leech (5) is achieved. The use of a Kevlar line is ideal here. Fig. 2, 3, ₅ and 4 show possible designs. Fig. 2 and 3 show the construction of a paraglider with lower sail (4) and the use of sail battens (7) in the upper sail (3). By using the rod (1) and the sail battens (7) in the upper sail (3), a paraglider is obtained which, after construction, is ready for flight in the span direction and in the vertical profile direction. The ram air entering through the ram air opening (13) only has the task of inflating the lower sail (4) and improving the position of the profile nose (11).

I I Ii in· «&igr; · · · ·

t I &igr; it ■ · · ·

f 1 &idigr; III «A ■

1 »III · · · ·

Hippen (8) serve to hold the suspension lines (9) and to transmit the forces emanating from the suspension lines (9) into the upper and lower sails (3 + 4). The use of sail battens (7) in the upper sail (3) can counteract permanent deep stall. The upper sail (3) cannot be pulled out of the area E of the leading edge of the wing. The sail battens (7) are fixed by batten pockets (10) in the upper sail (3). The control of the glider is usually carried out by means of the wing flaps (12 ) .

Fig. 3 shows the design of a paraglider without a bottom sail (4). In contrast to conventional paragliders, this and the paraglider described above can be manufactured with less material and sewing effort. Because the rod (1) and the sail battens (7) are divisible, the packing size is not significantly larger than with conventional paragliders. The weight is bearable despite the rod (1) and the sail battens (7) because comparatively little material is used. Fig. 5-8 show possible paraglider layouts.

Paragliders as described above have a comparatively high aerodynamic quality due to the elimination of the dew air openings (13) _, the low profile resistance and the good position of the sail and the shape of the wing tips.

Lezu^s sign

1 ,,tab

2 Leash

2 upper sails 4 lower sails

3 ..leech

6 ltab pocket

7 oegellatte

8 &igr; ippe

9 Catch line

1ü Lottentabche irofiln,-se i.andbogen

1^ ./dew air opening ■'+ brake line

Claims (7)

&mdash;1 &mdash; Claims 1. Flat-surface gliding sail made of flexible material, characterized in that a flexible rod (1) is inserted into the rod nose (11) in the direction of the spar width, which rod, as it reaches up to the leech (5) of the upper sail (i/), forms a handbow (12) and has a line (2) pulled into the leech (5). 2. Jlciuse^ei according to claim 1, characterized by the fact that the rod (1) is made of fiber-reinforced plastic. 3. ...guide rod according to one of claims 1 to 2, characterized in that the rod (1) is divisible. 4. Glider according to one of claims 1 to 3, characterized in that the lines of the rod (i) are conically tapered. 5. Paraglider according to one of claims 1 to 4, characterized in that the rod (1) is a wooden rod. 6. Sliding seal according to one of claims 1 to 13, _{characterized} in that the bearing (1) is a Vcllot; t. 7. ■&bull;jGuide sail according to claim 1, düdui-ch ^ekfennzeiclirifct, dui- in the leech (5) a line (2) is inserted. e^o^en which can be passed around the ends of the rod (1).