Summary of the invention
Main purpose of the present invention is to provide a kind of power transmission that utilizes blade to input or output wind-force or waterpower, make the blade of this power transmission when facing the wind/meeting water, represent maximum facining the wind/water side, and represent minimum wind-engaging/catchment area against the wind/against the current the time at blade.
Another object of the present invention is to provide a kind of wind generating unit and using method thereof of using above-mentioned power transmission, makes the blade of this wind generating unit represent maximum wind-exposuring area when facining the wind, and represent minimum blowing area when the blade contrary wind.
Another object of the present invention be to provide a kind of use above-mentioned power transmission pounce on rotor helicopter and using method thereof, make this blade of pouncing on the rotor helicopter when facining the wind, represent maximum wind-exposuring area, and represent minimum blowing area against the wind the time at blade.
Another object of the present invention is to provide the hydroelectric installation of the above-mentioned power transmission of a kind of usefulness, makes the blade of this hydroelectric installation represent maximum water side when meeting water, and represents minimum catchment area against the current the time at blade.
Another object of the present invention is to provide a kind of usefulness boats and ships that above-mentioned power transmission drives, and makes the blade of power transmission of these boats and ships represent maximum wind-exposuring area when facining the wind, and represents minimum blowing area against the wind the time at blade.
For the power transmission of realizing above-mentioned main purpose, the invention discloses utilizing blade rotation and revolution to combine.This power transmission comprises blade, the blade axis of rotation and blade frame wheel, described blade frame wheel has the hollow shaft line and rotates around the revolution axis, around described blade frame wheel, be provided with one or several blades, described one or several blades are fixedlyed connected with the blade axis of rotation separately, the described blade axis of rotation and described blade frame wheel are rotationally connected, it is characterized in that: described power transmission also comprises the rotation control mechanism that is connected with the described blade axis of rotation, described rotation control mechanism is used to control the rotating speed and the sense of rotation of the described blade axis of rotation, make that the sense of rotation of the described blade axis of rotation is opposite around the sense of rotation of revolution axis with described blade frame wheel, and make that the rotating speed of the described blade axis of rotation and described blade frame wheel are 1: 2 around the ratio of the rotating speed of revolution axis.
Further, described rotation control mechanism comprises with the concentric revolution axle sleeve of revolution axis, be fixed on revolution gear that hollow shaft puts, be fixed on one on the blade axis of rotation rotating gear and be fixed on axis of rotation synchromesh gear on each blade axis of rotation, by ring-type profile of tooth belt transmission, pass through ring-type profile of tooth belt transmission between each axis of rotation synchromesh gear between described revolution gear and the described rotating gear.
Further, described rotation control mechanism comprises the spinning motor that is connected with the blade axis of rotation and measures the sensor of blade frame wheel around revolution axis rotational speed that described velocity transducer is connected in wired or wireless mode with described spinning motor.
Further, the surface of described blade is provided with solar cell.
In order to realize above-mentioned another purpose, the invention discloses a kind of wind generating unit and using method thereof of utilizing above-mentioned power transmission.This wind generating unit comprises above-mentioned power transmission and the generator that transmits wind-force, and the output terminal of described power transmission directly or indirectly is connected with the rotating shaft of described generator.The using method of this wind generating unit comprises the steps: the angle of rotation α (1) of the 1st blade in the described power transmission is adjusted into zero; Adjust the angle of rotation α (i) of other blade, make other blade angle of rotation α (i) for the revolution angle β (i) half; Making angle of rotation α (i) and revolution angle β (i) is that the blade plane of zero blade is vertical with wind direction.
In order to realize above-mentioned another purpose, the invention discloses a kind of utilize above-mentioned power transmission pounce on rotor helicopter and using method thereof.This pounce on the rotor helicopter comprise the helicopter body and be arranged on symmetrically the helicopter body the left and right sides pounce on rotor, the described rotor of pouncing on is made of above-mentioned power transmission, constitutes the longitudinal extension of the blade axis of rotation of the power transmission of pouncing on rotor along described helicopter.This using method of pouncing on the rotor helicopter comprises the steps: the angle of rotation α (1) of the 1st blade in the described power transmission is adjusted into zero; Adjust the angle of rotation α (i) of other blade, make other blade angle of rotation α (i) for the revolution angle β (i) half; Making angle of rotation α (i) and revolution angle β (i) is that the blade plane of zero blade is parallel with horizontal plane; Rotate the blade hollow shaft of described power transmission.
In order to realize above-mentioned another purpose, the invention discloses a kind of hydroelectric installation that utilizes above-mentioned power transmission.This hydroelectric installation comprises the turbine of accepting water impact, and wherein, described turbine is made of above-mentioned power transmission.
In order to realize above-mentioned another purpose, the invention discloses a kind of boats and ships that utilize above-mentioned power transmission to drive.These boats and ships comprise hull, be arranged on the propeller cavitation on the hull and drive the propeller driving device of propeller cavitation, and wherein, described propeller driving device is made of above-mentioned power transmission.
Compared with prior art, advantage of the present invention has provided a kind of power transmission of blade rotation and revolution combination of real meaning, the sense of rotation of the blade axis of rotation of this power transmission is opposite with the revolution direction of blade frame wheel, and the ratio of the rotating speed between them is 1: 2, make the blade of this power transmission when facing the wind/meeting water, represent maximum facining the wind/water side, and represent minimum wind-engaging/catchment area against the wind/against the current the time at blade, improved the power transfer efficiency of whole power transmission.Utilize this power transmission wind generating unit, pounce on rotor helicopter, hydroelectric installation and boats and ships etc. and have best power performance.
Embodiment
Figure 1 shows that first embodiment of power transmission of the present invention.Power transmission shown in Figure 1 comprises blade, the blade axis of rotation, blade frame wheel and blade hollow shaft, described blade hollow shaft is arranged on the center of blade frame wheel, and fixedly connected with described blade frame wheel, around described blade frame wheel, be provided with four blades (certainly, it also can be a blade, two blades or other), it (can be integrally formed that described blade is fixedlyed connected with the blade axis of rotation separately, also be welded), the described blade axis of rotation is taken turns be rotationally connected (can be that bearing is connected) with described blade frame, described blade rotates around the axis of rotation separately, described blade frame wheel rotates around the formed revolution axis of blade hollow shaft (shown in the dotted line among the figure), described power transmission also comprises the rotation control mechanism that is connected with the described blade axis of rotation, described rotation control mechanism comprises the hollow shaft axle sleeve, be fixed on the revolution gear on the hollow shaft axle sleeve, be fixed on a rotating gear on the blade axis of rotation and the axis of rotation synchromesh gear that is fixed on each blade axis of rotation, by ring-type profile of tooth belt transmission, pass through ring-type profile of tooth belt transmission between each axis of rotation synchromesh gear between described revolution gear and the described rotating gear.The velocity ratio of described revolution gear and described rotating gear is 1: 2.Because described rotation control mechanism has said structure, make that the described blade axis of rotation is opposite with the sense of rotation of described blade hollow shaft, and make that the ratio of rotating speed and the rotating speed of described blade hollow shaft of the described blade axis of rotation is 1: 2.
With embodiment present embodiment is described in further detail in conjunction with the accompanying drawings: referring to Fig. 1, blade hollow shaft 1 fixes with blade frame wheel 2 and is connected among the figure, the blade axis of rotation 5 is installed on the outer rim of blade frame wheel 2 and turns, the blade axis of rotation 5 is centered at blade 3 and the connection that fixes, be provided with blade stiffening rib 4 in the framework of blade 3, determine the density of blade stiffening rib 4 according to the structural strength of blade, select the stamped steel silk screen for use or directly draw and be made into net or other material with steel wire, the blade axis of rotation 5 fixes with blade rotating gear 6 and is connected, the combination 7 of wind direction rudder rotating ring and gear is connected with wind direction rudder 14 and be rotatably connected with pedestal column 10 (combining referring to Fig. 1 and Fig. 4), making equidirectional power transmission with ring-type profile of tooth drivign belt 9 between the combination 7 of blade rotating gear 6 and wind direction rudder rotating ring and gear is connected, also available chain or gear transmission transmission device replace, equally, axis of rotation synchromesh gear 8 is fixedlyed connected with the blade axis of rotation 5, be rotationally connected synchronously with ring-type profile of tooth drivign belt 9 between the axis of rotation synchromesh gear 8 of all blades, adopt synchromesh gear simpler than single blade linkage structure.Blade hollow shaft 1 is placed in the pedestal column 10 rotatable, and by bevel type gear 11 rotating power is transferred to generator 12, and the whole wind electric installation can be settled braking device 13, also can settle clutch device and speed change gear as required.For system is moved well, region of interest can be settled suitable bearing.Blade surface can adopt lightweight material take off dress loose-leaf such as canvas, gummed cloth, stiffened wire lath is adopted on thin slice or surface artificial or chemosynthesis, the middle lightweight material such as foamed plastics that adopts.Structural strength by control blade surface material or medium material can also reach the purpose of preventing high wind and hurricane, and when wind-force surpassed certain intensity, surface or medium material were at first destroyed, and have protected blade and wind generating unit.
More than, the existence of wind direction rudder has guaranteed that blade caters to wind direction with maximum wind-exposuring area and minimum area against the wind under the rotation and the situation about combining that revolves round the sun.The wind direction rudder is one of a passive yawing system and device mode, and the present invention is main object to the associated description and the accompanying drawing of yaw system device with description and accompanying drawing to the wind direction rudder.
The relation and the working order of gear and transmission system are described below:
At first explain the implication of blade rotation and revolution: so-called blade rotation is the contiguous circumferential motion of blade with respect to blade axis of rotation central axis.So-called blade revolution is meant that blade drives the contiguous circumferential motion of blade frame wheel with respect to blade hollow shaft central axis, and in fact just blade has driven the rotation of hollow shaft.
Referring to Fig. 1 and Fig. 4, wind direction rudder rotating ring can freely rotate around the hollow shaft central axis under the effect of wind direction and wind direction rudder, determined when the direction of wind after the position of wind direction rudder that wind direction rudder rotating ring just rotates no longer arbitrarily, that is to say that it is static relatively.When making revolution motion under the effect of blade at wind-force, the combination of the blade and the blade axis of rotation is just made contiguous circumferential round wind direction rudder rotating ring and is rotated, explained earlier wind direction rudder rotating ring be static relatively, and be provided with the actuating unit of equidirectional rotation between the blade axis of rotation and the wind direction rudder rotating ring, the rotating ratio of blade rotating gear and wind direction rudder rotating ring gear is 1: 2.In the result who obtains under this condition be so: " when the revolution of blade and blade axis of rotation combination is when showing in clockwise operation way, the rotation of blade will be with counterclockwise drive manner performance.On the contrary, when the revolution of blade and blade axis of rotation combination is during with counterclockwise drive manner performance, the rotation of blade will show in clockwise operation way ".This point is extremely important, its significance is, when the blade revolution motion, reverse 1: 2 running of blade rotation has slowed down the variation of blade wind-engaging angle and has measured, that is to say when blade during at its maximum wind-exposuring area and minimum surface area against the wind, the slowing down of the blade tilt that the blade rotation causes helps the wind-engaging effect of blade blade when this operation zone period, and this blade can't produce the position of revolution benefit in traditional blades, the b among Fig. 4 for example, the d point, blade also can produce and help its component F along the tangential motion of revolution circumference, has greatly strengthened the effect of blade operation.And their rotating ratio is 1 to 2, make blade behind positive windward side Rotate 180 °, just arrive its positive adverse wind face, because the rotating ratio of the blade axis of rotation and wind direction rudder rotating ring is 1: 2, therefore the blade axis of rotation half i.e. 90 ° of angle of only having rotated 180 ° at blade revolution angle, blade surface is just in time parallel with wind direction so, promptly arrives its minimum area against the wind, and it is minimum that the resistance of suffered wind-force reaches.
Referring to Fig. 4, specifically describe blade under rotation and revolution combine situation, the force-bearing situation of the suffered wind-force of blade and running performance.Among the figure, set the revolution of blade and carry out in clockwise manner, thick arrow is a wind direction.Blade is when a point position, and blade plane is perpendicular to the wind direction rudder plane, and promptly perpendicular to wind direction, wind-receiving face at this moment the most just is positive windward side, and the suffered rotating force of whole blade gimbaled wheel is also maximum.Blade movement is when a is regional to b, and the antiport of blade rotation has slowed down the variation of blade wind-engaging angle to be measured, and has increased the performance time and the effect of the positive windward side of blade windward side when turning round down with the wind.Blade movement is when b point position, this point is the position that traditional blades can't produce the revolution benefit, blade plane and wind direction rudder plane angle at 45 have an edge revolution circle tangent direction to help the component F that the whole blade gimbaled wheel turns clockwise in the component that wind-force produces.Blade movement is when b is regional to c, and the described component in b point position still exists, but more and more littler.Blade movement is when c point position, and blade plane is parallel to the wind direction rudder plane, and is promptly parallel with wind direction, and this moment, suffered contrary wind area reached minimum, was positive adverse wind face, and suffered resistance is also minimum.Blade movement is when c is regional to d, and the described component in b point position still exists, and increasing.Blade movement is when d point position, and this point also is the position that traditional blades can't produce the revolution benefit, and is identical when the b point position with blade movement, has one to justify tangent direction along revolution and help the component F that the whole blade gimbaled wheel turns clockwise equally.Blade movement is when d is regional to a, and blade enters with 45 ° angular advance, and the stressing conditions of blade is drawn close to the stressing conditions that a is ordered gradually, and the maximum value when a point repeats later on.In sum, blade all has fabulous wind-engaging running performance near a, b, c, d each point zone.
Fig. 2 is second embodiment of power transmission of the present invention, itself and Fig. 1 are that first embodiment of power transmission of the present invention is basic identical, the rotation control mechanism of different is power transmission shown in Figure 2, the rotation control mechanism of power transmission shown in Figure 2 comprises spinning motor that is connected with the blade axis of rotation and the velocity transducer of measuring blade hollow shaft rotating speed (containing revolution rotating-speed tracking identification marking), and described velocity transducer is connected in wired or wireless mode with described spinning motor.Described rotation control mechanism is used to control the rotating speed and the sense of rotation of the described blade axis of rotation, make that the described blade axis of rotation is opposite with the sense of rotation of described blade hollow shaft, and make that the ratio of rotating speed and the rotating speed of described blade hollow shaft of the described blade axis of rotation is 1: 2.
With embodiment present embodiment is described in further detail in conjunction with the accompanying drawings: referring to Fig. 2, agent structure and Fig. 1 of showing wind generator among the figure are basic identical, the rotation control mechanism of the power transmission shown in difference is comprises spinning motor that is connected with the blade axis of rotation and the velocity transducer of measuring blade hollow shaft rotating speed, wherein the base of spinning motor 20 be fixed on blade frame wheel 2 lower frame in the inboard of axis of rotation bearing support, the output terminal of spinning motor directly or indirectly is connected with the blade axis of rotation.The combination 7 of wind direction rudder rotating ring and gear fixed with pedestal column 10 be connected, gear parts in the combination 7 of cancellation wind direction rudder rotating ring and gear, in this part revolution rotating-speed tracking identification marking 22 is set, revolution speed sensor 21 is fixed on the lower frame of blade frame wheel 2, between spinning motor 20 and revolution rotating-speed tracking identification marking 22, also can directly be placed in above the base of spinning motor 20.The employing method can be the method for operation of asynchronous motor, Wireless remote control is followed the tracks of or adopt laser and identification system in conjunction with the combination of automated tracking system, these contents can solve in textbook or known technology scope, if again in conjunction with microcomputerized control, can obtain better runnability.Above revolution speed sensor 21 is accepted the information that revolution rotating-speed tracking identification markings 22 are returned, and instruction spinning motor 20 with the revolution switched in opposite, rotating ratio is that 1: 2 mode turns round, described tracking is connected in wired or wireless mode with instruction.This tracking and instruction allow some little error in a service cycle, but not EE Error Excepted accumulation between whole on-stream period.The present embodiment biggest advantage is: this spinning motor has played the effect of yaw system in traditional wind generator to a certain extent in conjunction with the group shot of velocity transducer, and more direct, simple than it.Therefore can cancel the device of yaw system in former traditional wind generator, only keep wind vane wherein, wind vane is the sensor of former yaw system, the wind signal is issued revolution speed sensor 21 in the present embodiment, the revolution speed sensor revolution information and wind direction information in conjunction with handling the work of back instruction spinning motor.By the enlightenment of yaw system, same, the speed governing mechanism of wind generator also can combine with the revolution speed sensor, receives when the revolution speed sensor to produce targetedly after the speed-regulating instruction information of speed control system that " active yawing " reached the purpose of regulating the speed.
Fig. 3 is the Principles of Regulation figure of the starting phase angle of power transmission of the present invention.As shown in Figure 3, described power transmission has four blades, along becoming 90 degree to be provided with at interval all around.At first, establish described power transmission and have n blade, wherein n=4; Secondly, defining one of them blade is the 1st blade, and (when utilizing blade input wind-force or waterpower, this clockwise direction is identical with sense of rotation from the 1st blade along illustrated clockwise direction; When utilizing blade output wind-force or waterpower, this clockwise direction and direction of rotation) downwards the blade of number then be respectively the 2nd, 3,4 blade.Then, the axis of rotation of definition from the axis of rotation of above-mentioned the 1st blade to any one blade is revolution angle β (i) along illustrated clockwise angle, 1<=i<=n wherein, 0 °<=β (i)<=360 °; Define from the blade plane of any one blade to this blade axis of rotation simultaneously and plane that hollow shaft forms is angle of rotation α (i) along illustrated clockwise angle, 1<=i<=n wherein, 0 °<=α (i)<=180 °.As the above analysis, the revolution angle β (1) of the 1st blade is zero, and the revolution angle β (2) of the 2nd, 3,4 blade, β (3), β (4) are respectively 90 degree, 180 degree, 270 degree.The revolution angle of each blade is to be determined by the number of blade and the distribution situation of blade as can be seen, in case the distribution situation of the number of blade and blade determines that then the angle at the revolution angle of each blade is certain.And the angle of rotation α (i) of each blade need regulate according to concrete application.
Fig. 5 is among Fig. 1 embodiment, the annexation of hollow shaft and blade frame wheel, the conversion of rotation or fixed position.Among Fig. 1, described blade hollow shaft is arranged among the blade frame wheel and with described blade frame wheel fixedlys connected; Among Fig. 5, described blade hollow shaft is arranged among the blade frame wheel and with described blade frame wheel and is rotationally connected, and described blade hollow shaft is fixedlyed connected with hollow shaft fixed base 23.The device that Fig. 5 shows has only embodied the conversion of annexation, and the principle of its real work running is the same.
The present invention reaches the usability of improving wind generator by the following technical programs.Referring to Fig. 6, be mainly that with the difference of Fig. 1 the blade hollow shaft is parallel to horizontal plane, remaining part is all similar.The blade both sides are provided with, and can increase the power of wind generating unit under the condition of same blade structure intensity, and have the running of its uniqueness attractive in appearance.Owing to adopted the device of this spline structure, the blade frame wheel is in the process of rotation, blade is that height changes, the eminence air-flow is bigger comparatively speaking, suitable face of blade is stressed down with the wind, and the less suitable blade of lower air-flow turns round against the wind, also is beneficial to the installation and maintenance of blade are handled and taken off the surface layer that changes blade, blade is to be the level of state when turning round against the wind, and such situation helps reducing the height of whole wind electric installation on the whole.Wind generator of the present invention can also be provided with solar cell on the surface of blade, utilizes brush that the drainage of solar energy electric current is got off, and reaches simultaneously the utilization to wind energy and solar electrical energy generation.
Power transmission of the present invention can be suitable for the advancing means of boats and ships equally, and referring to Fig. 7, one can utilize the electric propulsion of wind-power electricity generation, and it two directly utilizes the rotation outputting power of wind generating unit to advance.The power of this wind force device advances, and with the wind, can play effect under the situation of crosswind, side headwind, goes for boats and ships such as yacht.Wind force device among Fig. 7 also can be selected the type of Fig. 6 for use.
Energy conversion characteristic according to power plant input, output.Wind energy can convert electric energy to by windmill, and electric energy also can convert wind energy to by blade.The blade of this power transmission wheel also can be used as the propulsion device of a kind of boats and ships like the propeller cavitation under the drive of input power thus, can adopt gear transmission, and the drive part cover is closed sealing.
Power transmission of the present invention and drive manner can also be applied in the aircraft of the vertical lift-off in a kind of original place---pounce in the rotor helicopter.Among Fig. 8, the blade frame wheel of the double-vertical-axis wind generator of two Fig. 6 descriptions etc. divides both sides opposed by aircraft rotation platform crossbeam 15 (blacking part among the figure), and the sense of rotation of two table apparatus is opposite, the right for the dextrorotation veer, the left side for being rotated counterclockwise direction.The gear of wind direction rudder rotating ring is fixedlyed connected with aircraft rotation platform crossbeam 15, the rotating power of helicopter engine passes to engine power input gear 16 and also passes to in-line gears 17 and backward rotation Gear combination 18 simultaneously, pass to blade revolution gear 19 by in-line gears 17 by ring-type profile of tooth drivign belt (dotted portion among the figure), blade revolution gear 19 is connected with blade hollow shaft 1, reaches power input purpose.Corresponding one side obtains the power input by backward rotation Gear combination 18 simultaneously.To divide the expression method be different to the front and rear portions of blade gimbaled wheel among the figure, and it is simple in structure to adopt the forward part mode to make, weight saving, but need to consider the structure fastness of the blade frame wheel and the blade axis of rotation, in order to avoid fracture.Fig. 8 is the vertical lift-off aircraft of this impeller of utilization---pounce on the rotor helicopter, the schematic top plan view of its blade rotation platform structure.Its passenger cabin or cockpit are arranged on the bottom of rotation platform, and one helps steadily of centre of gravity, and it two helps driving vision.Power engine can install at rotation platform, also can install in the bottom.Device can make convenience simple in structure in the mode of rotation platform, but is unfavorable for steadily of centre of gravity.The top and the bottom of aircraft connect can adopt as universal joint, connects by two mutually perpendicular rotatingshafts.Two-part can the relative position of appropriate change so up and down.The vertical lift-off of aircraft, its center of gravity projection is stabilized in the neutral position of whole blade effect rotation platform, after the lift-off, when center of gravity projection skew neutral position, or changing mutual alignment between them, corresponding position change will take place in aircraft, reach air objective.In addition, can install the rudder of flying power and afterbody as required in addition.
Conventional helicopters relies on the propeller cavitation rotation to produce lift, thisly pounce on the method that the rotor helicopter utilizes blade revolution to combine with rotation, adopt two mutual effects of both sides symmetry, in conjunction with downward flapping wing, two groups of blade frames take turns in couples that both sides split, and during by the running of blade frame wheel rotating band moving vane, blade is parallel with horizontal plane during to both sides reaches downward flapping wing generation lift when blade movement, reach vertical with horizontal plane of blade rotates during the blade movement intermediate portion, repeats flapping wing, rise then.Pounce on existing more than hundred year of rotor helicopter research, fail so far to solve, believe and utilize the method for blade rotation and revolution combination to be expected to play good start.
It is this that to pounce on its blade of rotor helicopter (its wing just) rotating speed relatively slow, but its aerofoil surface is long-pending very big, can think the long-pending wing that just is of body surfaces of its body, this characteristics are very advantageous in the aerofoil surface of pouncing on the rotor helicopter solar cell extensively are set, and can be in the tow sides setting (wing of pouncing on the rotor helicopter is that tow sides replace up or down) of wing, utilize sun-generated electric power when pouncing on the rotor helicopter and drive, just can stop for a long time aloft with drive motor, use this technology to make to pounce on the rotor helicopter and make very little very gently, be fit to very much military unmanned reconnaissance plane, the aerial waiting time of this scounting aeroplane is long, the scouting region is wide, and is difficult for being found by the enemy.The installation of drive motor also can have multiple choices, and one is set directly at the hollow shaft position, perhaps is arranged on axis of rotation position, or is arranged on the fuselage engine flat.Utilize mode transmissions such as gear, chain.Its two, described drive motor is separately positioned on hollow shaft position and all axis of rotation positions, the operating condition of all drive motor and rule according to preamble to the combine description operation of mode of blade rotation and revolution.The employing method can be that the combination (need stamp graphical symbol at former wind direction rudder rotating ring power transmission gear position) in conjunction with automated tracking system of laser and identification system is followed the tracks of or adopted to the method for operation of asynchronous motor or Wireless remote control, these contents can solve in textbook or known technology scope, if again in conjunction with microcomputerized control, can obtain better runnability.
Fig. 9 is the aircraft of the vertical lift-off in this power transmission of utilization original place---pounce on the schematic representation of rotor helicopter front view.Dotted portion is the frame of helicopter among the figure.
This rotor helicopter of pouncing on when not using as helicopter, can also be holded up aircraft in face of wind direction, just becomes the wind generator of rotation and revolution combination.