Captive balloon stable to wind load

FIELD: aerostation.

SUBSTANCE: proposed captive balloon has envelope made from gas-tight material and captive cables. Captive balloon is additionally provided with aerodynamic stabilization unit made in form of feathering unit secured on rod passing through upper pole of balloon envelope by means of lines; feathering unit is provided with keel; feathering unit is made in form of three-dimensional streamlined body inflated by air flow; when it is filled with air, it has shape of aerodynamic wing in plane of longitudinal section. Three-dimensional body is formed by upper and lower gores stretched on framework; edges of these gores are fastened over their perimeter forming air intake slotted opening and inner cavity filled with air flow. In zone of intake hole, upper gore has sizes exceeding sizes of lower gore, so that when three-dimensional body is filled with air, upper gore overhangs above lower gore.

EFFECT: simplified construction of balloon stable to wind load.

3 cl, 4 dwg

 

The invention relates to Aeronautics, namely, tethered balloons, possessing resistance to wind load.

Known tethered balloon [EN 2159199], which includes a housing representing a spherical shell, built-in support wing and tethered cable and cable wiring. The specified balloon resistant to wind gusts, which is achieved by choosing the shape of the hull. However, this balloon complex in design and technology.

Known tethered balloon [EN 2005649], selected by the authors as the closest analogue. Specified the balloon includes a disk inflatable body having an asymmetrical airfoil containing a partitioned shell of gas-tight material, and tie ropes, the tangent of the angle of inclination of each of which the horizon is approximately equal to the aerodynamic quality of the balloon at zero angle of attack.

This design allows for aerodynamic stabilization of the balloon when the variable in strength and direction of the wind. However, this balloon is a complicated construction, because the resistance to wind load is achieved it due to the complex shape and a specific reference system.

Object of the invention is simplified is giving the design of the balloon, possessing resistance to wind load.

The invention consists in that the balloon comprising a shell of gas-tight material, and tie the cables according to the invention further comprises aerodynamic stabilization device made in the form fixed by means of the sling passing through the upper pole of the shell of the balloon bar and provided with a keel flagimage inflatable air flow volume of the body a streamlined shape that when filling it with air is in the plane of the longitudinal sectional shape of the aerodynamic wing, with specified dimensional body formed of strained on the frame top and bottom panels, the edges of which part of their perimeter bonded with the formation of the input air intake slot and internal fill the air the flow cavity, and in the area of the inlet of the upper panel has dimensions greater than the dimensions of the bottom panel, so that when the filling volume of the body of air in a specified area of the top cloth hanging over the bottom.

It is reasonable to between the upper and lower panels in width three-dimensional body were installed made of pieces of cloth longitudinal partitions, each of which is in longitudinal cross-section has the shape of an aerodynamic cover is a, moreover, these partitions are decreasing in the direction from the Central longitudinal axis of the three-dimensional body to its periphery dimensions that determine their length and height.

It is appropriate that, in the absence of partitions within the volume of the body, and in the presence of the rod with flexible links connected to the shell of the balloon on Kahanamoku belt.

A distinctive feature of the inventive balloon is that its resistance to wind load is achieved by means located outside containment balloon aerodynamic device stabilization. The specified device is made in the form of an inflatable air flow volume of the body a streamlined shape that when filling it with air is in the plane of the longitudinal sectional shape of the aerodynamic wing, so that in the event of wind when inflated volume of the body of air and wrapping his wind flow creates aerodynamic lifting force, compensating the effect of wind loading on the membrane of the balloon. The consolidation of the three-dimensional body using a sling passing through the upper pole of the shell rod allows positioning surround the body on the rod relative to the horizon with some given angle of attack, depending on the magnitude of the wind load. This ensures construct the th link three-dimensional body, shell and tie ropes, causing them to force interaction, which achieves the stability of the balloon to the wind. The implementation of the stabilization device flygirls and supply its keel provides the installation volume of the body towards the wind flow in either direction of the wind. Use for forming three-dimensional body bonded to each other stretched on the frame top and bottom panels allows for the selection of the form of panels and frames to receive streamlined three-dimensional body whose profile has the shape of an aerodynamic wing. Thus due to the fastening edges of panels as part of their perimeter is achieved education of the input air intake slot in front of the three-dimensional body, through which the inside of the body enters the air stream, and the formation of a cavity inside a three-dimensional body, fill the flowing air. Use for forming three-dimensional body of the upper cloth, which in the area of the entrance opening has a size larger than the bottom panel, so that when the filling volume of the body of air in a specified area of the top cloth hanging over the bottom, allows for varying in a certain range of angle of attack volumetric body to provide for the ingress of air flow through the inlet and a pouting, is the air volume of the body.

Thus, due to the presence of the above-described aerodynamic stabilization device provides aerodynamic stability of the claimed tethered balloon with a variable in strength and direction of wind flow. While this stability is achieved without complicating the shape of the hull and mounting system of the balloon, which leads to simplification of its design.

The presence is made of pieces of cloth longitudinal partitions installed between the upper and lower panels in width three-dimensional body, each of which is in longitudinal cross-section has the shape of an aerodynamic wing, and the size of which decreases in the direction from the Central longitudinal axis of the three-dimensional body to its periphery, allows you to form a solid body, which, when inflated with air has a streamlined shape and in any of its longitudinal cross-section has the aerodynamic profile of the wing and causes the increase of the structural strength of bulk body and the improvement of the conditions of filling its air flow.

The connection rod with flexible links with the shell of the balloon on Kahanamoku zone promotes uniform distribution of current on the shell of the load, due to the lifting force occurring when the wrap is located towards the wind flow volume of the body, th is reduces the probability of local damage to the membrane due to the actions specified load.

Figure 1 presents a General view drawing of the proposed balloon; figure 2 presents a General view drawing three-dimensional body (side view); figure 3 - the same (top view); 4 - the same (front view).

Tethered balloon contains a shell 1 made of gas-tight material. On top of the shell 1 from its poles are located aprons 2, made of lightweight durable material. Aprons 2 are connected by flexible connections 3 with the shell 1, in particular a flexible connection 3 sewn in aprons 2, and spaced catenary zones shell 1 ends attached to the latter. The upper edge of the apron 2, located near the upper pole of the shell 1, is fixed in the washer 4. The shell 1 is attached tie cables 5. The balloon also includes aerodynamic stabilization device, comprising mounted on the upper pole of the shell 1 can be rotated around its vertical axis and filtered through a washer 4 vertical rod 6, on top of which using a sling 7 fixed pluginaudio inflatable air flow volume of the body 8, provided with a keel 9. The upper end of the rod 6 is fastened with three-dimensional body 8 in the center of his pressure.

Specified volumetric body 8 formed stretched on frames (not shown) top panel 10 and bottom panel 11, is made, in particular, of the light is selected tissue, reinforced tape, made of Kevlar. Edges of panels 10 and 11 to the right of the Central transverse axis of the three-dimensional body 8 is fastened, in particular sewn, with each other with the formation in front of the three-dimensional body 8 input air intake slotted opening 12 and the inner fillable air flow cavity (not shown).

The edges of the panels 10 and 11 in the rear part of the three-dimensional body 8 is bonded tightly to each other, so that between them there are slotted channels (not shown)that provides a through passage of air through the solid body 8, thereby improving its aerodynamic stability, and sduw accumulating in the back of moisture.

The upper panel 10 has in front of its parts (relative to the Central transverse axis of the three-dimensional body 8) the shape of a semicircle, and in the rear part of the form powellites. Bottom panel 11 has the shape of an ellipse major and minor axis of which is correspondingly large and small axes of powellites rear part of the upper panel 10, so that the filling volume of the body 8 of the air in front of the three-dimensional body 8 of the upper panel 10 hangs above the bottom panel 11. Between the upper 10 and lower 11 panels across the width of the volumetric body 8 is placed is made of pieces of cloth, made, in particular, of the same is Kani, as the panels 10 and 11, the longitudinal walls 13, each of which is in longitudinal cross-section has the shape of an aerodynamic wing. The partitions 13 are decreasing in the direction from the Central longitudinal axis of the three-dimensional body 8 to its periphery dimensions of length and height. Due to the chosen design volumetric body 8 when filling the air acquires a streamlined shape, and in any plane longitudinal cross-section has the shape of an aerodynamic wing.

The balloon also includes fixed on the rod 6 swivel mechanism 14 associated with slings 7, for changing the angle of attack of the volumetric body 8 relative to the horizon.

The balloon works as follows.

In the absence of wind the upper 10 and lower 11 sheets superimposed on each other, while not filled with wind surround the body 8 does not exert influence on held-tie ropes shell 1.

In the case of wind load pluginaudio surround the body 8 located on the rod 6 with a certain angle of attack relative to the horizon, due to the presence of the fin 9 is installed towards the wind flow. The inner cavity volume of the body 8 is filled with air, and it takes on a streamlined shape, with solid body 8 is in either its longitudinal-sectional shape of the aerodynamic wing. PR is the volumetric flow of the body 8 the wind flow arises aerodynamic lifting force, which due to the voluminous body 8 with the casing 1, carried out using a rod 6, the washer 4, the apron 2 and flexible connections 3, affects held tethered by cables 5 of the shell 1, compensating for lateral wind load on the shell 1. Thus due to the connection rod 6 by means of flexible connections 3 with sheath 1 Kahanamoku belt the actual load caused by the occurrence of aerodynamic lifting force is distributed evenly over the surface of the shell 1.

1. A balloon comprising a shell of gas-tight material, as well as tie cables, characterized in that it further comprises aerodynamic stabilization device made in the form fixed by means of the sling passing through the upper pole of the shell of the balloon bar and provided with a keel flagimage inflatable air flow volume of the body a streamlined shape that when filling it with air is in the plane of the longitudinal sectional shape of the aerodynamic wing, with specified dimensional body formed of strained on the frame top and bottom panels, the edges of which part of their perimeter bonded with the formation of the input air intake slot and the inner fillable air flow cavity, and in the area of the inlet of the upper panel there is tons dimensions, exceeding the size of the bottom panel, so that when the filling volume of the body of air in a specified area of the top cloth hanging over the bottom.

2. The balloon according to claim 1, characterized in that between the upper and lower panels in width three-dimensional body set is made of pieces of cloth longitudinal partitions, each of which is in longitudinal cross-section has the shape of an aerodynamic wing, and these partitions are decreasing in the direction from the Central longitudinal axis to surround the periphery of the body dimensions that determine their length and height.

3. The balloon according to any one of claim 1 or 2, characterized in that the rod with flexible links connected to the shell of the balloon on Kahanamoku belt.



 

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