RU2628823C1 - Hot air balloon shell - Google Patents

Abstract

FIELD: aviation.

SUBSTANCE: in the hot air balloon shell, which has a valve for the warm air release in the wall at the top, a bottom hole for the entry of the air heated by the burner, the gondola attaching cables covering the wall, an expanding/folding glare shield is attached on the spokes to the shell wall from above along the horizontal perimeter. The free end of the spoke is connected to the cable by a cord. The glare shield has openings for cables and air passage. The glare shield can be equipped with removable cylinders with gas lighter than air.

EFFECT: increase in the lifting force of the hot air balloon shell.

4 cl, 9 dwg

Description

The invention relates to the field of aeronautics.

Known hot air balloon shell, in the wall of which there is a valve installed on top for releasing warm air, and a hole for the entry of heated air by the burner, covering the wall of the cables [1], is made at the bottom. The hot air balloon shell can have a variety of shapes and sizes.

During burner operation, the air temperature in the hot air balloon shell increases in the direction from the heated air inlet opening to the valve for releasing warm air, reaching the highest value in its upper part, for example 90-110 ° С. As a result, the wall of the shell also heats up, losing some of the heat to the surrounding air. At the same time, upward flows of warm air caused by heat transfer processes arise at the wall from its outer side.

The objective of the invention is to increase the lifting force of the shell of the hot air balloon.

The technical result is achieved by the fact that in the shell of the hot air balloon, which has a valve for the release of warm air in the top wall, a hole for entering the air heated by the burner made from the bottom, covering the wall of the cables, an opening / folding visor is attached on the spokes from above to the wall along the horizontal perimeter. The free end of the knitting needle is connected to the cable with a cord. The visor has openings for the passage of cables and the passage of air. The visor is equipped with removable cylinders containing gas lighter than air.

In FIG. 1 shows a diagram of a well-known hot air balloon shell washed from the outside by flows of warm (heated from the shell wall) air; in FIG. 2 shows a hot air balloon shell with a visor open to the flow of warm air, side view; in FIG. 3 and 4 are a view of FIG. 2, respectively, above and below (cables not shown); in FIG. 5 shows a diagram for attaching a braided spoke to a wall of a shell and an elastic visor to a spoke; in FIG. Figure 6 shows the fastening with a braid to the visor of a cylinder filled with gas lighter than air; in FIG. 7 is a side view of the hot air balloon shell with a visor folded (the burner does not work); in FIG. 8 shows a diagram of a visor with curved knitting needles on top of a shell; in FIG. 9 is a plan view of FIG. 8.

The hot air balloon shell (Fig. 1) has a valve 2 on top of the wall for releasing warm air, a hole 3 made from the bottom for entering the air heated by the burner 4, tensioned cables 5 covering the wall (fastening to the nacelle cables is not shown). From the top to the outside, a folding / folding elastic visor 7 is horizontally attached on the straight knitting needles 6 to the wall 6 (Fig. 2-4). The visor to the knitting needles and the knitting needles to the wall of the shell are attached with braid 8 (Fig. 5). The free end 9 of the spokes with the ring on the end of cord 10 is connected with a rope, the point a cord connection and the cable is located below the cap. The visor has slotted holes 11 for passing cables and air passage (Fig. 3). The visor may be provided with cylinders 12 containing gas lighter than air. Cylinders can be located on top of the needles and / or visor (Fig. 6) at the same distance from one another. Gas cylinders are attached to the knitting needles or visor with tape with the possibility of removal. The purpose of the cylinders is to level (compensate) the mass of spokes and visor material. When the burner is idle (Fig. 7), the gas cylinders removed are lighter than air, the visor is folded (lowered) and can be removed from the shell. The spokes can be bent (Fig. 8) and attached to the wall of the shell at its apex. In this case, the holes for the passage of air in the visor (Fig. 9) can be made round (oval).

A flexible balloon shell is made from an elastic lightweight airtight material, for example, rubberized fabric, in the wall 1 of which a valve 2 is installed on top for releasing warm air (for example, when a hot air balloon is planted), and a round hole 3 is made from below for supplying heated air by burner 4. The shell is covered with cables 5 (Fig. 1).

Straight knitting needles 6 are made from steel spring wire with a ring at the end 9, and the needles are attached with parachute braid 8 so that the spoke can freely rise and fall (Fig. 5).

A visor 7 is made from an elastic light material, a visor 7 is made, providing slotted holes 11 therein for cable passage and air passage (Fig. 3). The visor is fastened with braid (glued, stitched) to the wall of the shell and knitting needles. A light and strong cord 10 is inserted into the ring at the end of the spoke, the end of which is connected to the cable at points a (Fig. 2). The purpose of the cords is to prevent the visor from rising above the horizontal line under the influence of an upward flow of warm air washing the outside of the shell wall during burner operation.

To accelerate the opening of the visor, it is provided with removable, for example elastic, cylinders 12 filled with gas lighter than air (hydrogen, helium, light gas, ammonia). Cylinders are taped to the spokes and / or visor material (Fig. 6).

During operation of the burner, the warm air entering the shell creates a lift sufficient to lift (start) the hot air balloon. Warm air surrounding the wall of the shell, acting on the visor, creates additional lifting force. Additional lifting force saves fuel, increases the duration of the hot air balloon. When the burner is idle, the additional lifting force disappears, while the visor (in the event that gas cylinders are removed from it lighter than air) folds (Fig. 7).

In the case of making spokes curved, they are fastened with braid to the wall of the shell at its apex (Fig. 8). The holes for the passage of air in the visor (Fig. 9) are round (oval).

The invention increases the lift of the hot air balloon shell.

Information sources

1. Encyclopedic dictionary of a young technician. Comp. B.V. Zubkov, S.V. Chumakov. - M.: Pedagogy, 1980. - S. 84-85 (article: Balloon).

Claims (4)

1. A hot air balloon shell having a valve on the top for releasing warm air, a hole made in the bottom for entering the air heated by the burner, and cables covering the wall, characterized in that an opening / folding visor is attached on top to the wall along the horizontal perimeter. 2. The hot air balloon shell according to claim 1, characterized in that the free end of each spoke is connected by a cord to a cable. 3. The hot air balloon shell according to claim 1, characterized in that the visor has openings for the passage of cables and the passage of air. 4. The hot air balloon shell according to claim 1, characterized in that the visor is equipped with removable cylinders containing gas lighter than air.

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