WO2002101217A1

WO2002101217A1 - Double-flow single-shaft gas turbine arrangement

Info

Publication number: WO2002101217A1
Application number: PCT/RO2002/000003
Authority: WO
Inventors: Dumitru PANU MISÃILESCU
Original assignee: Panu Misailescu Dumitru
Priority date: 2001-06-11
Filing date: 2002-04-02
Publication date: 2002-12-19
Also published as: RO121394B1; EP1419312A1

Abstract

The present invention refers on a double-f1ow aero reactive synchronous turbo machine (DF ARSTM), presenting a symmetric design, which can be used as a propulsory module in aeronautics and car industries, and at the same time as a power generator module in non-aeronautic applications.

Description

DOUBLE-FLOW SINGLE-SHAFT GAS TURBINE ARRANGEMENT

The present invention refers on a double-flow aero reactive synchronous turbo machine (DF ARSTM), presenting a symmetric design, which can be used as a propulsory module in aeronautics and car industries, and at the same time as a power generator module in non-aeronautic applications.

Up to date there are known a large variety of propulsory systems and aero reactive machines, used in aeronautic or non-aeronautic purposes, of which there could be mentioned: the turbo reactor (TR); the statoreactor (SR), the turbostatoreator (TSR); the double-flow turbo reactor (DFTR); the double-flow turbo reactor with post combustion combined with the statoreactor (DFTRSR); the rocket-turbo reactor (RTR) a.s.o.

The disadvantages of these propulsory systems and aero reactive machines known up to date are as listed bellow:

- a very complicated mechanical design;

- high cost of fabrication, maintenance and exploitation;

- high level of chemical and phonic pollution, due to multiple and complex physico-chemical processes taking place inside without an efficient mean of controlling thereof;

- big size and weight;

- difficulty in miniaturization when the designing of low-power units for aeronautic/non-aeronautic purposes is demanded, a limit being imposed that cannot be overridden mainly due to their constructive shapes, the bearings systems .and the systems, of concentric axes, etc.

The aim of invention is to increase the applicability area of the propulsory systems and aero reactive machines, by creating a double-flow aero reactive turbo machine (DFARTM), which can be executed both at big dimensions corresponding to high power demands or at little dimensions for low power demands, maintaining at the same time the principle of functioning and the constructive form, and knowing that the burning yield for most of the turbo motors maintains in a range from 100% to 98%, and that of the turbine from 90% to 92%.

The technical problem that this invention solves is the implementation of a double-flow aero reactive synchronous turbo machine (DF ARSTM), being able to substantially increase by its intercompatibility the number of applicability domains for the propulsory systems and extending the range of services that can be afforded from the use of aero reactive macliines, the named machines presenting a very simple design in which the main functional role is played by three parts, which assembled together make up a power module having a high degree of compaction, thus ensuring both great technical and economic advantages.

The double-flow aero reactive synchronous turbo machine (DFARSTM) offers the solution for solving the up mentioned disadvantages by increasing the lifetime, increasing the safety in exploitation, ensuring safe and fast start and stop times, reducing the friction, ensuring an optimal geometry for the paths and surfaces of the working fluid; the macriine is formed by three subassemblies, of which: the first two ones represent the semi stators, symmetrically disposed by the autorotation axis of the rotor and being at the mounting position, face to face and symmetrically situated against the plan of symmetry on which the joining is made; one of the named stator constituting in fact the mirror image of the other; and the third one represents a rotor, symmetrically positioned against the autorotation axis which, as the precedents parts, presents a plan of symmetry that divides it into two equal parts, the named planbeing^positioned. coincident with the plan of symmetry in which the joining of the semi stators takes place. The semi stators and also the rotor are provided with a series of ducts, bordered by surfaces of which margins show a neat and continuous change of form, all being correctly defined from the geometric point of view, conforming to their strictly functional role and determined following the analytic calculation in concordance to the theory of fluids, accomplishing by that the compliance of the named surfaces and the named ducts to the demands imposed by the complex dynamic phenomena that develop inside the machine. The assembly formed by the two semi stators and the rotor act as a pneumatic computer into which a continuous and homogeneous transformation of the working fluid parameters takes place, corroborated to the permanent intervention of an element playing the role of a load comparator that simultaneously equalizes the right loading to the left loading of the machine, thus ensuring the homogenization of the loading and, adding up and at the same time, the washing with fresh air of the machine components from inside to outside. All the passages of the working fluid from a surface to another, from a duct to another, are neat and present continuity on the entire path, so that, on a vein of the working fluid that adhered to a surface, to obtain a one-way passage from the inside up to the exit of the machine, where a surface is able to deliver to its neighboring surface the entire vein of fluid, the parameters of which are to be successively processed and transformed up to the final aim, by this conception method obtaining three original subassemblies which, assembled together, make up a synchronous and unitary power module presenting a high compressibility degree, the start off of which demands a supply with the following accessories: a known system for automatically fuel supply by injection and an also known system for initiating a fast and safe ignition of the fuel mixture, formed into the burning chamber, the last one being pulse driven.

The double-flow aero reactive synchronous turbo machine (DFARSTM) conforming to the invention, presents the following advantages:

- simplicity in what the dynamics of the energetic transformations and of the cinematic chain are concerned;

- an increased reliability;

- low volume and weight; - capable of working at very high temperatures of the burning gases, owing to the homogeneous cooling and to the embedded pallets, the.. inner .an outer.. bandages for stiffening of the pallets being not longer necessary;

- a low level of phonic and chemical pollution;

- low costs of fabrication, maintenance and exploitation;

- complies to miniaturization in order to design low power units too, besides the high power ones; adaptability for their usage in automotive and energetic industries, even in household, being endowed with energetic autonomy;

- high power on unit of volume and on unit of mass of the machine;

- relaunches the competition for applications in which aero reactive machines are involved, a.s.o.

The present invention can be implemented in different modes, some of which are here described by means of example, with references to the accompanying drawings, namely Figs. 1 to 15 which represent:

Fig.1. DFARSTM - Isometric view;

Fig.2. DFARSTM - Sketch in isometric view;

Fig.3. DFARSTM - Section in isometric view;

Fig.4. DFARSTM - Sketch section in isometric view;

Fig.5. DFARSTM - Section view of the sketch;

Fig.6. DFARSTM - Section view;

Fig.7. DFARSTM - Front view of the rotor;

Fig.8. DFARSTM - Section view of the rotor;

Fig.9. DFARSTM - Isometric view of the rotor;

Fig.10. DFARSTM - Front view of the right semi stator;

Fig.11. DFARSTM - Section view of the right semi stator;

Fig.12. DFARSTM - Left side view of the right semi stator;

Fig.13. DFARSTM - Right side view of the right semi stator;

Fig.14. DFARSTM - Isometric view of the right semi stator;

Fig.15. DFARSTM - Section view of the sketch of the left semi stator.

In the up mentioned drawings, with numbers we have marked the component parts of the DFARSTM:

1. - right semi stator;

2. - left semi stator; 3. - special rotor;

4. - rotor axis;

5. - rotor palleting with axial compressor;

6. - equalizing chamber serving to the interconnecting of the machine working fluids;

7. - windows of directing air admission into the palleting of the double-flow centrifugal compressor;

8. - palleting of the centrifugal compressor, having bilateral input of closed type, for which the diffuser represents in fact the reversing palettes disposed on the semi stators;

9. - firing tubes;

10. - palleting of the driving turbine (the inner or the outer bandage for the increase in strength and stability being not necessary any more);

11. - reverse palleting of the semi stators;

12. - ducts for collecting the burned gases;

13. - exhausting tubes (can be also provided with reactive spout, with provision for equipping with automatic controlling systems of exhausting and of exhausting direction of the gas flow);

14. - connection flanges for the mutual mounting, face-centered positioning and sealing of the semi stators;

15. - conic area;

16. - palleting of the axial compressor stator;

17. - outer carcass of the ring-shaped burning chamber;

18. - air deflective membrane;

19. - ring shaped burning chamber;

20. - non-contact sealing system with sinusoidal labyrinth;

21. - ducts for directing the air admission into the main equalization and interconnecting chamber;

22. - part for fuel admission;

23. - ring-shaped main grade for fuel distribution;

24. - connection tubes; 25. - vaporization tubes positioned radial-axially relative to the outer carcass;

26. - inner grooves for the transmission of the movement of rotation from the machine axis outwards;

27. - holes provided for face-centered assembling of the semi stators by means of shrews, eventually for fastening the machine on a chassis on which the machine itself works.

28. - locates for directing in .order to ensure the continuity of the gas path from the burning chamber to the firing tubes 9;

29. - mounting hole for the ignition system

The double-flow aero reactive synchronous turbo machine (DFARSTM) conforming to the invention, is made up by: semi stator 1, semi stator 2; they represent in fact the mirror image of one relative to the other, relative to their common mounting plan, b th presenting a symmetry relative to the axis of autorotation of the special rotor 3 which they accommodate. The special rotor 3 is of a symmetric construction relative to its autorotation axis and at the same time, presents a functional left-right symmetry in a coincident plan with the plan where the mounting of semi¹ stators 1 and 2 takes place; this plan of symmetry practically cuts into two equal and symmetrical parts the machine. The special rotor 3 has a rotor axis 4, provided at its ends with the rotor palleting 5 of the axial compressors, ranged in tiers; and at the central area of the rotor axis 4, on a portion relatively symmetrical in shape and length, there is provided an equalizing chamber 6, as a means of interconnecting the machine working fluids; the mentioned chamber actually plays the role of a load comparator element for the simultaneous equalization of the load value on the two symmetrical parts of the machine. Besides, the equalizing chamber 6 is a means of uniform washing with fresh air of all the component parts of the machine, from the air input to the inside of the machine and afterwards to the outside of the machine. The equalizing chamber 6 communicates by means of the windows 7 with directing, with the area between the palettes 8 of a centrifugal compressor having a bilateral input of closed type, which is embedded into the special rotor 3. The windows 7 with directing provide the air admission to the palettes 8 of the centrifugal compressor. Around the rotor axis 4 there are provided two firing tubes 9, which are circular cavities symmetrically disposed one relative to the other and through which the gases are driven towards the palettes 10 of the driving turbine, wherefrom the gases being taken over by the palettes 11 reveres of sense, which are embedded into the semi stators 1 and 2. As the palettes 10 of the driving turbine and the palettes 11 reverser of sense are actually symmetrically cavities embedded into their support, namely the special rotor 3 and the semi stators 1 and 2, there is no more need for the inner and outer bandages in order to increase the palettes strength and stability. The gases, after working in the palettes 11 reverser of sense, reach a gallery 12 collector of gases wherefrom, by means of the exhausting tubes 13, are exhausted outside the machine. Semi stators 1 and 2 are provided with flanges 14, necessary to their face tp face mounting, thus providing their- centering and sealing, presenting at their ends a conic area 15 into which the stator palettes 16 of the axial compressors are mounted. The rotor axis 4, the rotor palettes 5, the conic area 15 and the stator palettes 16 form together two axial compressors with a synchronous functioning. An outer carcass 17 belonging to the stators 1 and 2 embeds into a profiled circular cavity an air deflective membrane 18 and a burning chamber 19. A non-contact sealing system 20, with sinusoidal labyrinths ensures the continuity of the gas path from the burning chamber 18 to the gas outlet of the machine by the exhausting tubes 13, the same sealing system providing also the separation of gases from the penetration of air through the channels 21 with directing towards the equalizing chamber 6, in order to work into the palettes 8 of the centrifugal compressor with bilateral entrance of closed type. An admission part 22 for combustible connects an accessory situated outside the machine which can be also a known automatic supply system with fuel by injection, to a main distribution platform 23, wherefrom the fuel is driven by means of the connection tubes 24 towards the vaporization tubes 25, placed radial-axially and ranged in tiers relative to the outer carcass 17, of a variable geometry. The rotor axis 4 is provided at its both ends with the inner grooves 26, acting as a plug for transmitting the rotational movement outside the machine when desired. Some holes 27, equidistantly disposed into the flanges 14 of the semi stators, serve for fastening and face-centered mounting of the machine component parts by means of screws, and of the machine itself relative to a chassis on which the machine is to work. The connection between the burning chamber 19 and the firing tubes 9 meant to assure the continuity of the gas path towards the exit, is provided by some locations with directing 28. The ignition of the mixture formed by the fuel and the air delivered by axial compressors can be realized by means of one of the already known actual systems for initiating a quick and safe ignition, provided that this ignition can be also pulse driven, the system itself fasten able on the machine by means of the outlet 29 situated on the outer carcass 17 which embeds the burning chamber 19.

According to the invention, the double-flow aero reactive synchronous turbo machine (DFARSTM) works as follows: to start it off, it is necessary that into the main platform 23 to exist fuel come through the admission part 22 from a classical known automatic fuel supply system by injection, situated outside the machine and playing an accessory role, which penetrates into the burning chamber 19 by means of the connection tubes 24 and of vaporization tubes 25, into which the forming of an homogeneous mixture of fuel and air takes place, owing to the radial-axially and ranged in tiers disposal of the vaporization tubes 25 of a variable geometry. The air coming from the front parts, propelled by the rotor palettes 5 and the stator palettes 16 of the axial compressors, or coming just from the accessory injection system that, for several seconds necessary from the start up to the regimen speed, will provide a ready-made fuel mixture, the mentioned mixture that, as soon as it reaches the burning chambers, is instantaneously fired by means of a known accessory system for firing initiation, which can be fixed close nearby the burning chamber 19 on the outer carcass 17 into the specially purposed outlets 29, moment _at which the burning by detention takes place, and the resulting gases are forced into the one-way path through the machine towards its exit, initiating the self-rotative movement of the special rotor 3. The starting of the self-rotative movement of the special rotor 3 consequently brings into functioning the axial compressors formed by the rotor axis 4, the rotor palettes 5, the stator palettes 16 and the conic area 15, as well as the centrifugal compressor with bilateral entrance by closed type, the palettes 8 thereof taking up the fresh air from the equalizing chamber 6, air forced herein through the directing tubes 21 by means of the axial compressors, in order to provide the uniformly washing of the machine components with fresh air. From the moment at which the special rotor 3 reaches an established rotational speed value, the injection supply system will supply, instead of the fuel mixture, fuel exclusively; and the ignition system will be decoupled, as we already have a thermic potential existent into the burning chamber and having a sufficiently high temperature in order to determine the auto ignition, the role for preparing the fuel mixture being taken up by the burning chamber 19, which ensured the necessary air flow supplied by the axial compressors. The control of the rotational speed is ensured by the number of the injection pulses and their frequency per unit of time. As the machine presents a perfect symmetry and as through the equalizing cavity 6 a connection is actually established following the principle of communicating ducts between the active components of the machine, there results a homogeneous loading of the two symmetric parts of the machine, such a loading permanently inducing null stresses and null axial and radial plays. By their well-defined construction, the shape of the cavities and that of the surfaces which border the component parts of the machine, we accomplish a perfect bearing from an aerodynamic point of view, conducting thus to the compensation of the radial stresses and plays, being at the same time ensured the non-contact sealing, equally by the aerodynamic method using the labyrinths technique, which in the present example have a sinusoidal shape, belonging to the sealing system 20 and being no more than some simple channels encrusted into the cylindrical part of the stator plates. As the machine is working without the classic bearings, the automatation of the shocks and vibrations induced after the start offs and stops is automatically accomplished, on air cushion. The only problems that could be raised refer to the stopping and starting of the machine from scratch. If up to now we concerned with the start off, from now on we will be concerned with its stopping, that can be done as follows: the exhausting tubes 13 can be provided with known controlled exhausting systems, essentially an accessory system of automatic control of the gradual starting and stopping of the exhausting, as well as for switching the exhausting direction for the gas jet. At the moment at which the machine stopping is desired, the gas exhausting diminishes gradually by the command given to the known accessory system, simultaneously with the stopping of the known accessory system of supply by fuel injection, followed by the total shut down of the gas exhausting. The special rotor 3 maintains for a little time its inertial movement of rotation, trying to further compress fresh air in the path of the burned gas. The path traveled by the burned gas being closed at the exit from the exhausting tube 13, fills up with air up to a certain pressure value when, due to the balance of the kinetic moment of the special rotor 3 with the pressure value from behind, the special rotor 3 stops and then starts a reverse rotation movement due to the under pressured air relaxation from behind it, moment at which takes place once again the opening of the exhausting. Hence, by the commands synchronization, there actually yields a very pronounced shortening for the braking time and for the starting time up to the nominal regimen. As a time measure between these commands, there can be established relations depending on the weight and rotation speed of the special rotor 3 at the moment at which we refer. There can be established functional relations of time between commands, as the time elapsed between the operations, in direct connection with the weight and speed of rotation of the special rotor 3, relations that can be further used for a complete automation of the mentioned processes.

Claims

The double-flow aero reactive synchronous turbo machine (DFARSTM) conforming to the invention, characterized by that, for having simplicity hi what the dynamics of the energetic transformations and of the cinematic chain are concerned, an increased reliability, low volume and weight, for working at very high temperatures of the burning gases, owing to the homogeneous cooling and to the embedded pallets, the inner and outer bandages for stiffening of the pallets being not longer necessary, for having a low level of phonic and chemical pollution, low costs of fabrication, maintenance and exploitation, compliance to miniaturization in order to design low power units too, besides the high power ones, adaptability for their usage in automotive and energetic industries, even in household, being endowed with energetic autonomy, high power on unit of volume and on unit of mass of the machine, possibility of relaunching the competition for applications in which aero reactive machines are involved, a.s.o., the up mentioned machine is composed by: semi stator (1), semi stator (2); they represent in fact the mirror image of one relative to the other, relative to their common mounting plan, both presenting a symmetry relative to the axis of autorotation of the special rotor (3) which they accommodate. The special rotor (3) is of a symmetric construction relative to its autorotation axis and at the same time, presents a functional left-right symmetry in a coincident plan with the plan where the mounting of semi stators (1) and (2) takes place; this plan of symmetry practically cuts into two equal and symmetrical parts the machine. The special rotor (3) has a rotor axis (4), provided at its ends with the rotor palleting (5) of the axial compressors, ranged in tiers; and at the central area of the rotor axis (4), on a portion relatively symmetrical in shape and length, there is provided an equalizing chamber (6), as a means of interconnecting the machine working fluids; the mentioned chamber actually plays the role of a load comparator element for the simultaneous equalization of the load value on the two symmetrical parts of the machine. Besides, the equalizing chamber (6) is a means of uniform washing with fresh air of all the component parts of the machine, from the air input to the inside of the machine and afterwards to the outside of the machine. The equalizing chamber (6) communicates by means of the windows (7) with directing, with the area between the palettes (8) of a centrifugal compressor having a bilateral input of closed type, which is embedded into the special rotor (3), The windows (7) with directing provide the air admission to the palettes (8) of the centrifugal compressor. Around the rotor axis (4) there are provided two firing tubes (9), which are circular cavities symmetrically disposed one relative to the ..other and through which the gases are driven towards the palettes (10) of the driving turbine, wherefrom the gases being taken over by the palettes (11) reveres of sense, which are embedded into the semi stators (1) and (2). As the palettes (10) of the driving turbine and the palettes (11) reverser of sense are actually symmetrically cavities embedded into their support, namely the special rotor (3) and the semi stators (1) and (2), there is no more need for the inner and outer bandages in order to increase the palettes strength and stability. The gases, after working in the palettes (11) reverser of sense, reach a gallery (12) collector of gases wherefrom, by means of the exhausting tubes (13), are exhausted outside the machine. Semi stators (1) and (2) are provided with flanges (14), necessary to their face to face mounting, thus providing their centering and sealing, presenting at their ends a conic area (15) into which the stator palettes (16) of the axial compressors are mounted. The rotor axis (4), the rotor palettes (5), the conic area (15) and the stator palettes (16) form together two axial compressors with a synchronous functioning. An outer carcass (17) belonging to the stators (1) and (2) embeds into a profiled circular cavity an air deflective membrane (18) and a burning chamber (19). A non-contact sealing system (20), with sinusoidal labyrinths ensures the continuity of the gas path from the burning chamber (18) to the gas outlet of the machine by the exhausting tubes (13), the same sealing system providing also the separation of gases from the penetration of air through the channels (21) with directing towards the equalizing chamber (6), in order to work into the palettes (8) of the centrifugal compressor with bilateral entrance of closed type. An admission part (22) for combustible connects an accessory situated outside the machine which can be also a known automatic supply system with fuel by injection, to a main distribution platform (23), wherefrom the fuel is driven by means of the connection tubes (24) towards the vaporization tubes (25), placed radial-axially and ranged in tiers relative to the outer carcass (17), of a variable geometry. The rotor axis (4) is provided at its both ends with the inner grooves (26), acting as a plug for transmitting the rotational movement outside the machine when desired. Some holes (27), equidistantly disposed into the flanges (14) of the semi stators, serve for fastening and face-centered mounting of the machine component parts by means of screws, and of the machine itself relative to a chassis on which the machine is to work. The connection between the burning chamber (19) and the firing tubes (9) meant to assure the continuity of the gas path towards the exit, is provided by some locations with directing (28). The ignition of the mixture formed by the fuel and the air delivered by axial compressors can be realized by means of one of the already known actual systems for initiating a quick and safe ignition, provided that this ignition can be also pulse driven, the system itself fasten able on the machine by means of the ou et (29) situated on the outer carcass (17) which embeds the burning chamber (1 ).

According to the invention, the double-flow aero reactive synchronous turbo machine (DFARSTM) works as follows: to start it off, it is necessary that into the main platform (23) to exist fuel come through the admission part (22) from a classical known automatic fuel supply system by injection, situated outside the machine and playing an accessory role, which penetrates into the burning chamber (1 ) by means of the connection tubes (24) and of vaporization tubes (25), into which the forming of an homogeneous mixture of fuel and air takes place, owing to the radial-axially and ranged in tiers disposal of the vaporization tubes (25) of a variable geometry. The air coming from the front parts, propelled by the rotor palettes (5) and the stator palettes (16) of the axial compressors, or coming just from the accessory injection system that, for several seconds necessary from the start up to the regimen speed, will provide a ready- made fuel mixture, the mentioned mixture that, as soon as it reaches the burning chambers, is instantaneously fired by means of a known accessory system for firing initiation, which can be fixed close nearby the burning chamber (19) on the outer carcass (17) into the specially purposed outlets (29), moment at which the burning by detention takes place, and the resulting gases are forced into the one-way path through the machine towards its exit, initiating the self-rotative movement of the special rotor (3). The starting of the self-rotative movement of the special rotor (3) consequently brings into functioning the axial compressors formed by the rotor axis (4), the rotor palettes (5), the stator palettes (16) and the conic area (15), as well as the centrifugal compressor with bilateral entrance by closed type, the palettes (8) thereof taking up the fresh air from the equalizing chamber (6), air forced herein through the directing tubes (21) by means of the axial compressors, in order to provide the uniformly washing of the machine components with fresh air. From the moment at which the special rotor (3) reaches an established rotational speed value, the injection supply system will supply, instead of the fuel mixture, fuel exclusively; and the ignition system will be decoupled, as we already have a thermic potential existent into the burning chamber and having a sufficiently high temperature in order to determine the auto ignition, the role for preparing the fuel mixture being taken up by the burning chamber (19), which ensured the necessary air flow supplied by the axial compressors. The control of the rotational speed is ensured by the number of the injection pulses and their frequency per unit of time. As the machine presents a perfect symmetry and as through- the equalizing cavity (6 a connection is actually established following the principle of communicating ducts between the active components of the machine, there results a homogeneous loading of the two symmetric parts of the machine, such a loading permanently inducing null stresses and null axial and radial plays. By their well- defined construction, the shape of the cavities and that of the surfaces which border the component parts of the machine, we accomplish a perfect bearing from an aerodynamic point of view, conducting thus to the compensation of the radial stresses and plays, being at the same time ensured the non-contact sealing, equally by the aerodynamic method using the labyrinths technique, which in the present example have a sinusoidal shape, belonging to the sealing system (20) and being no more than some simple channels encrusted into the cylindrical part of the stator plates. As the machine is working without the classic bearings, the automatation of the shocks and vibrations induced after the start offs and stops is automatically accomplished, on air cushion. The only problems that could be raised refer to the stopping and starting of the machine from scratch. If up to now we concerned with the start off, from now on we will be concerned with its stopping, that can be done as follows: the exhausting tubes (13) can be provided with known controlled exhausting systems, essentially an accessory system of automatic control of the gradual starting and stopping of the exhausting, as well as for switching the exhausting direction for the gas jet. At the moment at which the machine stopping is desired, the gas exhausting diminishes gradually by the command given to the known accessory system, simultaneously with the stopping of the known accessory system of supply by fuel injection, followed by the total shut down of the gas exhausting. The special rotor (3) maintains for a little time its inertial movement of rotation, trying to further compress fresh air in the path of the burned gas. The path traveled by the burned gas being closed at the exit from the exhausting tube (13), fills up with air up to a certain pressure value when, due to the balance of the kinetic moment of the special rotor (3) with the pressure value from behind, the special rotor (3) stops and then starts a reverse rotation movement due to the under pressured air relaxation from behind it, moment at which takes place once again the opening of the exhausting. Hence, by the commands synchronization, there actually yields a very pronounced shortening for the braking time and for the starting time up to the nominal regimen. As a time measure between these commands, there can be established relations depending on the weight and rotation speed of the special rotor (3) at the moment at which we refer. There can be established functional relations of time between commands, as the time elapsed between the operations, in direct connection with the weight and speed of rotation of the special rotor (3), relations that can be further used for a complete automation of the mentioned processes.