RU2721014C1 - Method of wind and energy air flows energy conversion at medium altitudes in troposphere and device for its implementation - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: invention relates to renewable energy sources and is intended for use in wind power engineering. Method implemented by means of device is based on optimal control of wing angle of each of tethered gliders in order to maximize generated electric power depending on wind speed, as well as on dynamic control of position of tethered gliders in space to ensure stability of movement of system. Proposed device comprises identical tethered gliders arranged at different heights and connected by ropes to each other and electric generator installed on ground platform. On each glider air balloons are arranged, gimbal unit connected to ground platform mechanisms equipped with converters of direction of rotation and cable length controllers. Gliders are equipped with a traditional system to control lifting force and position of glider in space, altimeters, air flow velocity sensors, telecommunication facilities. Besides, device can be arranged on truck or on floating craft and, consequently, it provides mobility to device on land and at sea.

EFFECT: higher efficiency of conversion of energy of wind and thermal flows and expansion of functional capabilities of device for conversion of wind energy.

7 cl, 4 dwg, 3 tbl

Description

The invention relates to the field of renewable energy and is intended for use in wind energy.

Currently, wind turbines with a horizontal axis of rotation dominate in wind energy. Despite the fact that very significant funds were spent to improve these turbines, they have a number of fundamental shortcomings that cannot be eliminated, since they are inherent in the aeromechanical scheme of these wind turbines.

It is known that the blade section near the butt (about 20% of the blade length) does not make any significant contribution to the conversion of wind energy. Wind turbines require installation on sufficiently high columns, and heavy electric generators and gearboxes are located on the upper end of the column, which necessitates an increase in the bending stiffness (and therefore weight) of the column. The aerodynamic drag of the wind turbine rotor creates a significant bending moment, the perception of which requires the construction of a multi-ton foundation. Wind turbines with a vertical axis of rotation can be effective only at a sufficiently high speed of rotation. As a result, their use is limited to low power installations.

Known methods for converting the energy of wind and energy flows of air (Cristina Archer and Ken. Caldiera. Global Assesment for High Altitude Wind Power // Energies 2009, 2 , 307-319; DOI: 10.3390 / en20200307), in which operations control the movement and aerodynamic the lifting force of the wing system by adjusting the tension of the cables connecting the system to the ground platform, which ensures only the functioning of the system. The disadvantage of these methods of converting the energy of wind flows is the low efficiency of energy conversion, since there are no operations aimed at maximizing the conversion of energy of wind flows, as well as operations to adapt the system to a given wind speed.

It is also known that wind speeds at medium and high altitudes are significantly higher than in the surface boundary layer (Cristina Archer and Ken. Caldiera. Global Assesment for High Altitude Wind Power // Energies 2009, 2 , 307-319; DOI: 10.3390 / en20200307 ; Tony Burton (et all). Wind Energy Handbook. - Wiley and Sons, 2001. DOI: 10.1002 / 0470846062). To convert the energy of wind currents at heights, balloons carrying wind turbines with electric generators and transmitting energy to the earth via cable were developed and proposed (Tony Burton (et all). Wind Energy Handbook. - Wiley and Sons, 2001. DOI: 10.1002 / 0470846062; Bryan Roberts (et all). Harnessing High Altitude Wind Power // IEEE Transactions on Energy conversion, Vol. 22, No. 1, March 2007).

Systems of this type have the following disadvantages:

- the large volume and dimensions of the balloon, due to the weight of the wind turbine, generator, as well as the electric cable for transmitting energy to the ground;

- a high load on the tethered rope of the balloon due to the large aerodynamic drag of the system, which necessitates an additional increase in the lift of the balloon (i.e. its volume and size), and also causes a significant deviation of the position of the balloon from the point of attachment of the rope to the ground, resulting in significantly increased the required lengths and weights of the tethered cable and electric cable.

To convert wind energy at medium altitudes, another type of system was proposed and is being developed, characterized in that in these systems an electric generator is located on a ground platform (Miles L. Loyd. Crosswind Kite Power // J. Energy, Vol. 4, No. 3, article No. 80-4075; M. Canale, L. Faggiano, and M. Milanese. High Altitude Wind Energy Generation Using Controlled Power Kites // IEEE Transactions on Control Systems Technology, 2010; Maxim Ahmed, Ahmad Hably, Seddik Bacha. High Altitude Wind Power Systems: A survey on flexible Power Kites // XXth International Conference on Electrical Machines (ICEM'2012), Sep. 2012, Marseille, France. Pp. 2083-2089.)

These systems are used to convert wind energy into aerodynamic forces acting on a structure such as a kite, and the position of this structure relative to the wind flow is controlled from the ground. In order to reduce weight, such systems use wing systems such as a paraglider.

The disadvantages of these systems include the following:

- the wing of the paraglider has a low aerodynamic quality;

- the system has passive zones and phases when energy is not produced;

- a ground carousel with carriages for several paragliders occupies a large area, deprives the system of mobility, significantly complicates control, not guaranteeing high reliability of the system;

- the system does not have any means of ensuring stability in case of gusts of wind.

The closest in technical essence to the present invention are the method and device described in the European patent "Apparatus, plant and method for conversion of wind or water flow energy into electrical energy " (European Patent EP 158174 3B1, priority date: 08.10.2003).

The method described in the above patent is that the reciprocating movement of two wing systems along the guide cable is used to generate energy, when the extreme points of movement are reached, the wing angle of each wing system is changed using mechanical devices so that if the first system reaches the extreme upper position, then its angle of attack is reduced to zero, and the angle of attack of the second system, which is at that moment in the lowest position, is increased to the maximum specified value; depending on the amount of energy produced, they control the height above the ground of the wing systems by changing the lengths of the cables connecting the systems to the ground platform, and also change the working stroke of the wing systems.

The device consists of two wing systems connected to the ground platform by cables transmitting mechanical load to the gearbox drums, connected with the generator shaft; a guide cable, the upper end of which is attached to the aerostat, and on the guide cable there are mechanical markers that determine the stroke length for each wing system, and the gearbox drums are equipped with devices for regulating the length of the cables associated with wing systems; on each of the wing systems, mechanical devices are installed to change the angle of attack of the wing at the lower and upper end of the working stroke of the system, and each of these devices is driven by aerodynamic forces acting on the corresponding wing system.

The disadvantages of the above method and device are:

- not high enough  energy conversion efficiency due to the fact that there is no optimization of the angle of attack of the wing depending on the wind speed;

- there is no automatic control of the position in space and the stability of the system;

- wing structure, consisting of a number of inflatable sections, supported by cables, does not allow to achieve high aerodynamic quality;

- mechanical devices for changing the angle of attack of the wing complicate the design of the system and reduce the aerodynamic quality of the wing.

The technical problem solved in the present invention is to increase the efficiency of energy conversion of wind and thermal flows and expand the functionality of the device for converting wind energy.

The technical result is achieved due to the fact that in the known method of converting the energy of wind and thermal air flows in the troposphere at medium altitudes using a device in the form of two tethered gliders connected by cables to an electric generator installed on a ground platform, the following operations are performed:

- on the lower and upper glider, the velocities of the horizontal and vertical components of the air flow are measured, the resulting air flow velocity and its angle of inclination to the horizon are calculated; if the resulting air flow velocity is insufficient or too large, the working height is changed, while simultaneously adjusting the length of the cables for the lower and upper glider;

- using aerodynamic rudders, set the lower glider to the maximum allowable angle of attack relative to the resulting air speed, at the same time set the upper glider to such a negative angle of attack relative to the resulting air speed, which provides zero lift force of the upper glider;

- for these values of the resulting air flow velocity and angle of attack, the theoretically optimal value of the speed of movement of the lower glider relative to the ground platform is calculated; measure the actual speed of movement of the lower glider relative to the ground platform and, by adjusting the angle of attack of the lower glider, achieve the maximum value of the generated power; remember the actual optimal values of the speed of movement of the lower glider relative to the ground platform and its angle of attack for a given resulting air speed;

- when the set value for moving the lower airframe relative to the ground platform is reached, using the aerodynamic rudders, the angle of attack is changed to negative, equal to the value that was previously set for the upper airframe, and at the same time, the upper airframe is set to the angle of attack, which was previously determined for the lower glider, then the whole cycle is repeated. To implement this method, the device described below is used.

The specified technical result is achieved due to the fact that in the proposed device containing aerodynamic wing systems connected by cables to an electric generator installed on a ground platform, aerodynamic wing systems are made in the form of identical tethered gliders, which are placed at different heights and equipped with aerostatic balloons mounted on end of the wing of each of the gliders. In the center of gravity of each airframe, a gimbal unit is installed, to which a cable is connected connecting the airframe with the ground platform mechanism corresponding to this airframe. In the design of the lower glider, a hole is made through which the cable of the upper glider is passed, each cable is equipped with spring-loaded roller guides for passing the cable of another glider. The generator shaft is connected to two mechanisms equipped with rotational direction converters and cable length regulators, one of which is connected to the lower glider cable, and the second, respectively, to the upper glider cable. Each tethered glider is equipped with a traditional system for controlling the lifting force and the position of the airframe in pitch, roll and yaw space, the airframe is equipped with an altimeter, air flow sensors, both horizontal and vertical, as well as telecommunication facilities. The cable connecting the tethered glider with the corresponding mechanism of the ground platform is connected to the gimbal assembly through a cylindrical damper. The electric generator shaft is connected to two mechanisms equipped with rotational direction converters and cable length regulators through a gearbox and flywheel. The tethered gliders can be made with several wing plans, for example with two or three (biplane or triplane). The traditional control system of the lifting force and the position of the airframe in pitch, roll and yaw space contains aerodynamic rudders, ailerons, means of wing mechanization, accelerometers, gyroscopes. The cable connecting the tethered glider with the corresponding mechanism of the ground platform is connected to the gimbal assembly through a cylindrical damper.

The proposed method for converting the energy of wind and energy flows of air at medium altitudes in the troposphere and the device for its implementation allow, firstly, to ensure maximum efficiency of the conversion of wind energy for any given wind speed and altitude, due to the fact that the wing is installed on the optimum angle of attack at each moment of time and at the same time the energy of the ascending air flows is used to the maximum, and secondly, to expand the functionality due to the fact that the device automatically finds the optimum working height with respect to wind speed. In addition, the device can be placed on a truck or on a boat and, therefore, provides mobility to the device on land and at sea.

The invention is illustrated by the following drawings:

figure 1 is a front view of the device;

figure 2 is a side view of one of the tethered gliders of the device;

figure 3 - the top of the tethered gliders of the device in use for telecommunications;

figure 4 - diagram of a telecommunication system using the proposed device.

The front view of the proposed device is presented in figure 1. The device contains two identical tethered aircraft 1 and 2 and a ground platform. Each aircraft consists of a glider 3 and aerostatic balloons 4 mounted at the ends of the wing. The volume of aerostatic balloons is chosen so that they create a lifting force exceeding the weight of the airframe with the cable by 5%. This allows gliders in the absence of wind to be stationary at a certain height. In this case, the cables 5 and 6 connecting the gliders with the ground platform will have a tension equal to 5% of the weight of the glider along with the cable. The cable 6 of the upper glider passes through the hole in the structure of the lower glider, where for this cable there are roller spring-loaded guides; on the cable 5 of the lower glider also installed spring-loaded roller guides for the passage of the cable 6 of the upper glider. A shaft of an electric generator 9 is installed on the ground platform, which is connected through a gearbox 10 and a flywheel 11 with two mechanisms 12 and 13, equipped with rotational direction converters and length regulators of the cables 14, 15, one of which is connected to the lower glider cable 5, and the second one respectively, with cable 6 of the upper glider. A central control system with a central processor is also installed on the ground platform, which is connected by a radio channel to the local processors of the upper and lower glider control systems. The central control system includes means for measuring the movement of each airframe with its cable 5, 6 relative to the ground platform, and means for measuring the increment (or shortening) of the length of each of the cables. The central control system also includes electromechanical controls for the length of each of the cables 14, 15, electromechanical switching means at the end of the stroke of the gliders of the direction of rotation of the mechanisms 12, 13, driven by rotation of the lower and upper glider cables.

The ground platform has a lower fixed part, which can be installed on a foundation, on a truck or on a boat. The upper part can rotate relative to the lower around the vertical axis and self-orientate in the direction of the wind, since the axis of the wheels receiving the cables is shifted relative to the center of rotation.

Figure 2 shows a side view of the upper glider. In the center of gravity of the airframe, a gimbal unit 7 is located, to which a cable 6 is attached through a cylindrical damper 8, connecting the airframe to the ground platform. The lower glider has an identical design. Each glider can have several wing plans (biplane, triplane, etc.). Glider equipment includes: a traditional system for controlling the lifting force and position in space (pitch, roll and yaw); Altimeter and air flow rate sensors, both horizontal and vertical. The traditional system for controlling the lift and position in space consists of aerodynamic rudders, ailerons, wing mechanization tools, accelerometers and gyroscopes connected to the onboard control microcontroller. The power supply of the onboard microcontroller is carried out by converting wind energy from a small wind turbine with a screw 18.

Consider the sequence of operations that ensure the operation of the device.

First of all, the speeds of the horizontal and vertical components of the air flow are measured on the lower and upper gliders. The resulting air flow rate and the angle of inclination of the resulting speed to the horizon are calculated by the formulas:

,

,

,

,

– результирующая скорость воздушного потока; Where

- the resulting air flow rate;

– скорость горизонтальной составляющей воздушного потока;

- the speed of the horizontal component of the air flow;

– скорость вертикальной составляющей воздушного потока;

- the speed of the vertical component of the air flow;

– угол наклона результирующей скорости к горизонту.

- the angle of inclination of the resulting speed to the horizon.

If the resulting air velocity is insufficient (less than 3 m / s) or too large (more than 30 m / s), the working height is changed, while simultaneously adjusting the length of the cables for the lower and upper glider. Using aerodynamic rudders set the lower glider to the maximum allowable angle of attack relative to the resulting air flow rate:

, где

where

– максимально допустимый угол атаки относительно скорости воздушного потока;

- the maximum allowable angle of attack relative to the speed of the air flow;

– угол наклона хорды крыла к горизонту;

- the angle of inclination of the wing chord to the horizon;

– угол наклона результирующей скорости к горизонту.

- the angle of inclination of the resulting speed to the horizon.

перемещения нижнего планера относительно наземной платформы. Это значение можно определить из условия максимума генерируемой планером механической мощности At the same time, the upper glider is set to such a negative angle of attack with respect to the resulting air flow rate, which provides zero lift to the upper glider. For these values of the resulting air velocity and angle of attack, the theoretically optimal velocity value is calculated

moving the lower glider relative to the ground platform. This value can be determined from the condition of maximum mechanical power generated by the glider

, где

where

W is the mechanical power generated by the glider;

подъёмная сила, создаваемая крыльями биплана;

lift generated by the wings of a biplane;

оптимальное значение скорости перемещения нижнего планера относительно наземной платформы.

the optimal value of the speed of movement of the lower glider relative to the ground platform.

, где

where

℘ - mass density of air;

– результирующая скорость воздушного потока;

- the resulting air flow rate;

суммарная площадь крыльев биплана;

total area of the wings of the biplane;

коэффициент подъёмной силы при нулевом угле атаки;

lift coefficient at zero angle of attack;

производная коэффициента подъёмной силы по углу атаки;

derivative of the lift coefficient with respect to the angle of attack;

;

;

;

;

:Maximum condition

:

;

;

=0.

= 0.

:From this we obtain the following relation for the optimal value

:

.

.

Then, the actual speed of movement of the lower glider relative to the ground platform is measured, and the efforts on the cables and the generated electric power are simultaneously measured. Adjust the angle of attack of the lower glider to achieve the maximum generated power; remember the actual optimal values of the speed of movement of the lower glider relative to the ground platform and its angle of attack for a given resulting air velocity, as well as the force on the cable. Given that the force on the cable is equal to the glider's lifting force, we can determine the efficiency when converting the generated mechanical energy into electrical energy. Upon reaching a predetermined value of movement of the lower glider relative to the ground platform, using the aerodynamic rudders, the angle of attack is changed to negative, equal to the value that was previously set for the upper glider, and at the same time, the upper glider is set to the angle of attack that was previously determined for the lower glider .

Then, the above operations are cyclically repeated, changing in each cycle the numbers of gliders indicated in the description of operations. Gliders will make a reciprocating motion, during which the distance between them will increase or decrease.

Consider the estimated estimates of the electrical power that the proposed system can generate. From the above formulas it follows that the power referred to one square meter of the total area of the wings of the biplane is:

, где

where

.

.

и достичь максимальной величины

, можно получить следующие оценки для крыла с механизацией:Given that the effective angle of attack of the glider wing can be set so as to compensate for the harmful effects

and reach the maximum value

, one can obtain the following estimates for a wing with mechanization:

;

;

.

.

The wing area is:

, где

where

– площадь крыла;

- wing area;

размах крыла;

wingspan;

λ is the elongation of the wing.

Assuming λ = 8 and the efficiency of devices for converting mechanical power into electrical power equal to 85%, the following values are obtained for the wing span, wing lift and generated electric power (table 1):

Table 1. Estimated wing power with mechanization

Wing Area (S _w , m ² ) 10 twenty thirty 40 fifty 60 70 80 90 100 Wingspan
(b, m) 6.3 8.9 eleven 12.6 14.1 15,5 16.7 17.9 nineteen twenty Wing lift
( L, kg) 450 900 1350 1800 2250 2700 3150 3600 4050 4500 Mechanical power generated by a glider
(W, kW) 17 34 51 68 85 102 119 136 153 170

From the above data of table 1 it follows that the proposed method and device with the same overall dimensions as for other devices make it possible to produce at least twice as much power as traditional wind turbines. In this case, vertical air flows can be effectively used, which is impossible in other types of devices. The magnitude of the lifting force allows you to fix the ground platform of the device on the truck. The presence on the glider of an “airplane” control system and stabilization of the position in space provides stability and controllability of the airframe in wind flows in the presence of turbulence.

The inventive device can also be used for telecommunications and surveillance of the territory. For this purpose, appropriate radio transmitters and receivers with their antennas (16, 17, see Fig. 3), as well as gyrostabilized cameras, laser rangefinders and laser illumination devices, must be installed on board one or two gliders. The power supply of all this equipment is carried out due to the conversion of wind energy by a small wind turbine (18, see figure 2) with a horizontal axis of rotation located in the bow of each glider. Another option for on-board power supply can be carried out by transferring electricity from a ground platform to gliders via wires along the cables.

, планер с аппаратурой передачи данных расположен на высоте H в точке А. Линия ABCЕ – это линия прямой видимости, которая является касательной к окружности Земли в точке В. Обозначим D максимальное расстояние вдоль линии прямой видимости между точкой А на высоте Н и точкой В на уровне Земли (таблица 2). Figure 4 illustrates the organization of high-speed data transmission using microwave signals, microwave, propagating rectilinearly within the line of sight. Figure 4 has the following notation: R is the radius of the Earth, the ground platform of the device is located at

, a glider with data transmission equipment is located at a height H at point A. ABCE line - this line of sight, which is tangent to the circumference of the earth at the point B. Denote by D the maximum distance along the line of sight between point A at height H and point B at ground level (table 2).

Table 2. The dependence of the communication range from the height of the relay

Height
(H, m) 100 200 300 400 500 Maximum distance along the line of sight
(D, km) 32 49 60 69 77

Point C is located at the same height H as point A. Suppose that at this point is the second same telecommunication device. Then the maximum transmission distance along the line of sight will double. Taking into account that the width of the Adriatic Sea varies from 90 km to 200 km, it can be concluded that using the two or three devices described above (located on watercraft) it is possible to provide high-speed data transfer for ships and yachts from one coast to another. Suppose that at point E at a height of H ₁ is a plane. Table 3 below shows the values of the distance along the line of sight D ₁ depending on the height H ₁ .

Table 3. The dependence of the possible range of communication with the aircraft in flight

Height
(H ₁ , m) 2000 3000 4000 5000 6000 7000 Maximum distance along the line of sight
(D ₁ , km) 155 190 219 245 268 290

From the data of table 3 it follows that the proposed device can be used to control unmanned vehicles at a long distance and to receive information from these devices.

Literature

1. Cristina Archer and Ken Caldiera. Global Assesment for High Altitude Wind Power // Energies 2009, 2 (2), 307-319; DOI: 10.3390 / en20200307.

2. Tony Burton (et all). Wind Energy Handbook. - Wiley and Sons, 2001. DOI: 10.1002 / 0470846062.

3. Bryan Roberts (et all). Harnessing High Altitude Wind Power // IEEE Transactions on Energy conversion, Vol.22, No1, March 2007, http://dariopiga.com/Papers/Journal/TECKite2010.pdf.

4. Miles L. Loyd. Crosswind Kite Power // J. Energy, Vol. 4, No. 3, article No. 80-4075 http://www.energykitesystems.net/OrthoKiteBunch/OptimizationOfAManualFlygen.pdf.

5. M. Canale, L. Faggiano and M. Milanese. High Altitude Wind Energy Generation Using Controlled Power Kites // IEEE Transactions on Control Systems Technology, 2010. http://dariopiga.com/Papers/Journal/TECKite2010.pdf.

6. Maxim Ahmed, Ahmad Hably, Seddik Bacha. High Altitude Wind Power Systems: A survey on flexible Power Kites // XXth International Conference on Electrical Machines (ICEM'2012), Sep 2012, Marseille, France. pp.2083-2089. https://hal.archives-ouvertes.fr/file/index/docid/733723/filename/2083-ff-007498.pdf.

7. European Patent EP 158174 3B1, priority date: 10/08/2003, published 1/17/2007, http://worldwide.espacenet.com/publicationDetails/originalDocument?FT=D&date=20070117&DB=&locale=en_EP&CC=EP&NR=1581743B1&KD=B1&KD=B1 1.

8. Pavel Miodushevsky. New efficient systems for conversion of the wind and water flow energy in electrical energy. // Paper presented at the 6 ^{th International Energy Conversion Engineering Conference, IECEC} , 2008. - AIAA paper / AIAA-2008-5613.

Claims (7)

1. The method of converting the energy of wind and thermal air flows in the troposphere at medium altitudes, carried out using a device in the form of two tethered gliders connected by cables to the ground platform of an electric generator, characterized in that the speeds of the horizontal and vertical components of the air flow are measured on the lower and upper gliders calculate the resulting air flow rate and its angle of inclination to the horizon, if the resulting air flow velocity is insufficient or too large, the working height is changed, while simultaneously adjusting the length of the cables for the lower and upper glider, then using the aerodynamic rudders set the lower glider to the maximum allowable the angle of attack relative to the resulting air flow rate, at the same time set the upper glider to such a negative angle of attack relative to the resulting air flow velocity, which provides zero lifting force of the upper glider, for data values of the resulting air velocity and angle of attack calculate the theoretically optimal value of the speed of movement of the lower glider relative to the ground platform; measure the actual speed of movement of the lower glider relative to the ground platform and, adjusting the angle of attack of the lower glider, achieve the maximum value of the generated power, remember the actual optimal values of the speed of movement of the lower glider relative to the ground platform and its angle of attack for a given resulting air velocity; when the target value for moving the lower glider relative to the ground platform with the help of aerodynamic rudders is reached, its angle of attack is changed to negative, equal to the value that was previously set for the upper glider, and at the same time, the upper glider is set to the angle of attack that was previously determined for the lower glider, then the whole cycle is repeated. 2. A device for converting the energy of wind and thermal air flows at medium altitudes in the troposphere, containing aerodynamic wing systems connected by cables to an electric generator mounted on a ground platform, characterized in that the aerodynamic wing systems are made in the form of identical tethered gliders that are placed at different heights and equipped with aerostatic balloons installed at the end of the wing of each of the gliders, a cardan assembly is installed in the center of gravity of each glider, to which a cable is connected connecting the glider with the ground platform mechanism corresponding to this glider, in addition, an opening is made in the structure of the lower glider through which upper glider cable, each cable is equipped with spring-loaded roller guides for passing the cable of another glider, and the generator shaft is connected to two mechanisms equipped with rotation direction converters and cable length regulators, one of which is connected with a lower glider cable and a second one, respectively, with an upper glider cable, each tethered glider is equipped with a traditional system for controlling the lifting force and the position of the glider in space in pitch, roll and yaw, the altimeter, air flow velocity sensors, and also means are installed on the gliders telecommunications. 3. The device according to claim 2, characterized in that the tethered gliders can be made with several wing plans, for example, with two or three. 4. The device according to claim 2, characterized in that the traditional system for controlling the lifting force and the position of the airframe in pitch, roll and yaw space is equipped with aerodynamic rudders, ailerons, wing mechanization means, accelerometers, gyroscopes. 5. The device according to claim 2, characterized in that the cable connecting the tethered glider with the corresponding mechanism of the ground platform is connected to the gimbal assembly through a cylindrical damper. 6. The device according to claim 2, characterized in that the shaft of the electric generator installed on the ground platform is connected through a gearbox and a flywheel to two mechanisms equipped with rotational direction converters and cable length regulators. 7. The device according to claim 2, characterized in that the air velocity sensors mounted on the glider can be for both horizontal and vertical air flow.

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