CN109681370A

CN109681370A - Fluid power method and fluid power mechanism

Info

Publication number: CN109681370A
Application number: CN201811506133.0A
Authority: CN
Inventors: 黄得锋
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-11
Filing date: 2018-12-11
Publication date: 2019-04-26
Also published as: CN112776976A

Abstract

A hydrodynamic method, characterized by: the power mechanism is provided with a power front driving part, one surface of each part of the power mechanism, which faces to the advancing direction of the power mechanism, is a head-on surface, and the other surface, which is back to the advancing direction of the power mechanism, is a back-flow surface; the flow surface of the power front driving part meets the requirement that the pressure of fluid borne by the power front driving part plays a role in damping the advancing of the power mechanism; the fluid power method is to drive the power precursor to move, so that fluid on the flow surface of the power precursor and the power precursor move relatively, the pressure of the fluid on the flow surface of the power precursor is reduced, and the movement of the precursor has a gain effect on the advancing of the power mechanism.

Description

A kind of hydrodynamic technology and fluid power arrangement

Technical field

The invention mainly relates to a kind of method for being subjected to displacement object with fluid and use hydrokinetic traffic work Tool, more particularly to using aerodynamic aircraft or use hydrodynamic boat hydrophone.

Background technique

It is respectively pressure, density and the speed of fluid according to p, ρ, v in " Bernoulli equation " p+ ρ gz+ (1/2) * ρ v^2=C(formula Degree；Z is plumb height；G is acceleration of gravity) it is found that ideal barotropic fluid makees steady motion in the case where there is the effect of gesture body force When, for the incompressible homogeneous fluid in gravitational field, flow velocity is higher, then air pressure is smaller.

Summary of the invention

It is an object of that present invention to provide a kind of using fluid motion raising power mechanism power performance and has the low, ring that consumes energy The method of guarantor's type, and a kind of energy consumption developed using this method it is low, can suspend, the environment-friendly type vehicles.

To achieve the above object, technical solution of the present invention are as follows:

A kind of hydrodynamic technology, it the following steps are included:

1) precursor is moved, then makes the fluoran stream surface relative motion of the fluid and precursor on precursor fluoran stream surface, then makes Fluid on precursor fluoran stream surface reduces the Fluid pressure of precursor fluoran stream surface；

2) keep rear-guard part do not move, or make rear-guard part movement generate to power mechanism have damping be less than precursor In motion process precursor head on upper fluid to power mechanism have gain effect.

Further, the hydrodynamic technology further includes the Fluid pressure pair reduced between precursor lee side and rear-guard part The damping of power mechanism.

And/or

Isolation

To reduce the Fluid pressure between precursor lee side and rear-guard part to the damping of power mechanism, it can be used following three Kind method:

1 precursor fluoran stream surface upper fluid of method and precursor lee side upper fluid belong to the fluid of identical composition

1.1 abilities for making the ability of precursor lee side and synchronised fluid movement be greater than precursor fluoran stream surface；Make power precursor The flow velocity of lee side upper fluid is less than the flow velocity of power precursor fluoran stream surface fluid.(embodiment may is that precursor lee side With fluoran stream surface using the material or structure that coefficient of friction is different or roughness is different；It is higher to move synchronously ability, relative velocity is got over It is small)

1.2 make surface of the fluid Jing Guo precursor lee side opposite on precursor lee side, so that precursor lee side pair The pressure of fluid suffered by the surface of facade also reduces.

2 precursor fluoran stream surface upper fluid of method and precursor lee side upper fluid belong to the fluid of not identical composition.

2.1

On precursor lee side, without fluid motion, (precursor lee side face space vacuum can be used in 3 power mechanism of method Or realized close to vacuum).

A kind of aerodynamic vehicle:

It is equipped with one or more precursors, the power drive face include one of power precursor and power rear-guard part or All.

Above-mentioned technical proposal has the beneficial effect that

A kind of hydrodynamic technology provided by the invention makes forerunner face high-speed motion, and the fluid on the fluoran stream surface of forerunner face is then made to exist Relative motion on forerunner face then reduces Fluid pressure suffered by the fluoran stream surface of forerunner face, while remaining in the same direction with power direction Air pressure, or control and the changing value of power direction air pressure in the same direction, to reduce to the damping of power mechanism (such as: after holding The decreasing value for driving part upper fluid pressure is less than the decreasing value of precursor fluoran stream surface upper fluid pressure), then obtain power mechanism The power of advance.

It is further illustrated below by way of specific embodiment and attached drawing.

Detailed description of the invention

Fig. 1 is 1 overall schematic of embodiment；

Fig. 2 is the single power mechanism schematic diagram of embodiment 1；

Fig. 3 is the stress scoreboard figure of the single power mechanism of embodiment 1；

Fig. 4 is the bottom view and main view sectional view of 1 precursor of embodiment；

Fig. 5 is embodiment 1,3 hollow round table 101, hollow round table 102 and the combination diagram with partition panel 104-106；

Fig. 6 is the precursor and power mechanism schematic diagram of 1 gain scheme 3 of embodiment；

Fig. 7 is 2 overall schematic of embodiment；

Fig. 8 is 3 overall schematic of embodiment；

Fig. 9 is the single power mechanism schematic diagram of embodiment 3；

Figure 10 is 3 drainage plate stereoscopic schematic diagram of embodiment；

Figure 11 is that 3 fluid of embodiment flows to schematic diagram；

Figure 12 is a kind of aerodynamic vehicle power rear-guard part operation schematic diagram.

Specific embodiment

A kind of hydrodynamic technology for aerodynamic vehicle, specifically:

Power precursor is set on power mechanism, enables on each component of power mechanism and is towards the one side of power mechanism direction of advance Fluoran stream surface, the one side backwards to power mechanism direction of advance are lee side；The power precursor fluoran stream surface meets power precursor The pressure of suffered fluid plays damping action to the advance of power mechanism；The hydrodynamic technology makes forerunner face high-speed motion, after And make the fluid and the relative motion of power precursor on power precursor fluoran stream surface, then reduce on power precursor fluoran stream surface Fluid then makes precursor movement play gain effect to power mechanism advance the pressure of power precursor fluoran stream surface.

The power mechanism is equipped with power rear-guard part, and the power rear-guard part lee side meets the suffered stream of power rear-guard part The pressure of body plays gain effect to the advance of power mechanism；The hydrodynamic technology includes dropping efficacious prescriptions method using fluid damping, To reduce the damping that the fluid motion between precursor lee side and rear-guard part advances to power mechanism.

Efficacious prescriptions method drops in the fluid damping, is that the flow velocity of power precursor lee side upper fluid is made to be less than institute on power mechanism State the flow velocity of the parts surface upper fluid of power precursor institute face.

Efficacious prescriptions method drops in the fluid damping, is to make the flow velocity of power precursor lee side upper fluid be less than power precursor to meet The flow velocity of stream interface fluid.

Further, it keeps rear-guard part not move, or having to power mechanism for rear-guard part movement generation is made to damp effect Fruit be less than precursor motion process in precursor head on upper fluid to power mechanism have gain effect；Then precursor is made to meet stream The pressure of fluid suffered by face is less than the pressure of fluid suffered by rear-guard part lee side.

The actuator is formed on track in a period of motion, is not at least circumference in the presence of the movement on 30% path Movement.

Spacing on the precursor and power mechanism meets: the precursor lee side face, on power mechanism Fluid on surface and is reduced on power mechanism and on the surface of precursor lee side face by the effect campaign of precursor Fluid pressure.

Working principle:

Since the fluid speed on precursor fluoran stream surface gradually rises, fluid is gradually reduced the pressure on fluoran stream surface, and rear-guard face On fluid be barely affected, keep normal pressure value to make front and back drive face form upward fluid pressure differential, work as pressure When difference is greater than gravity suffered by power mechanism, and there is the lift for suspending or moving upwards.

Invention core:

The present invention by forerunner face movement obtain precursor fluoran stream surface upper fluid pressure reduction (necessary technology scheme), while before The damping for driving part lee side upper fluid weakens (optional technical solution), when power mechanism is suffered in vertically upward direction Resultant force increases, and finally overcomes self gravity up to the ability of suspension or upward flight (or floating), similarly adjusts different directions Precursor can be realized toward different directions and fly or be subjected to displacement.Below by way of 6 embodiments of " a kind of aerodynamic vehicle " It is specifically described its utilization of hydrodynamics method.

A kind of fluid power arrangement:

Embodiment 1:

A kind of aerodynamic vehicle as shown in Figs. 1-5 is equipped with one or more groups of air force mechanisms, every group of air force mechanism Equipped with one or more air force mechanisms；The air force mechanism includes power precursor 1 and power mechanism 3；Engine Structure 3 includes main body 30, motor 31, battery 32 and control cabinet 33；Main body 30 includes barrel shell 301, isolation board 302, the isolation Plate 302 is fixedly arranged on wherein one end in barrel shell 301 and close to barrel shell 301；The motor 31 is fixedly arranged on isolation board 302, motor 31 output shaft 310 passes through isolation board 302；The precursor 1 is placed on the output shaft 310 of motor 31, and is divided with motor 31 Set on the two sides of isolation board 302；The precursor 1 is placed on the inside of barrel shell 301 by bearing 2.

The fluoran stream surface of the precursor 1 is smooth surface, so that viscous small infinite approach of the fluoran stream surface to air thereon In 0.

The precursor 1 and 302 distance d of isolation board are less than the 1/2 of 1 diameter of precursor so that the fluid on isolation board 302 by The effect of precursor 1, and the high-speed motion on isolation board 302, so that the Fluid pressure that isolation board is subject to reduces.

The spacing of precursor of the present invention 1 and isolation board is not limited to 1/2 of 1 diameter of precursor described in the present embodiment, all Meet " effect of fluid on isolation board 302 by precursor 1, and the high-speed motion on isolation board 302 so that isolation board by Fluid pressure reduce." design, in protection scope of the present invention.

Working principle:

As shown in figure 3, power mechanism 1 forces suffered by the power direction includes:

Act on air pressure F1 on precursor fluoran stream surface S1,

Act on air pressure F3 on precursor lee side S2,

Act on air pressure F4 on the surface of isolation board 302 and institute's precursor lee side S2 face,

Act on the air pressure F2 on rear-guard part surface.

To sum up air resultant force F suffered by power mechanism are as follows:

F= -F1+F3-F4+F2

In the idle situation of precursor, acts on air on power mechanism and do not flow, precursor, isolation board, rear-guard It is 0 that the gap of the plumb height of part, which is connected to, therefore F1=F3=F4=F2, so F=0;

When precursor under the drive of motor output shaft high-speed rotation, air and 1 fluoran stream surface of precursor on 1 fluoran stream surface of precursor Relative motion reduces according to the air pressure F1 on 1 fluoran stream surface of bernoulli law precursor；On the other hand, precursor 1 is acted on The air pressure F4 that air pressure F3 on lee side reduces, acts on isolation board also reduces；And the air-flow in rear-guard face is acted on not by shadow It rings, therefore F4 does not change.Due to F1 F3 F4 variable quantity △ F1 △ F3 △ F4 all with the direct phase of the revolving speed of precursor It closes, variable quantity △ F3 ≈ △ F1 or △ F3 ≈ △ F4, so F=- (F1- △ F1)+(F3- △ F3)-(F4- △ F4)+F2=(- F1 + F3-F4+F2)+△ F1- △ F3+ △ F4=△ F1- △ F3+ △ F4 ≈ △ F1 or △ F4 > 0, then obtain air force.

When precursor high-speed rotation, the fluid between precursor and isolation board is used as high speed circular Zhou Yun by precursor work It is dynamic, and there is centrifugal force；Because power mechanism is difficult to accomplish hermetically sealed, therefore the fluid between precursor and isolation board at least one Part can the space between precursor and isolation board throw away so that air pressure reduces between precursor and isolation board, therefore forerunner Part is easy to happen deformation；Precursor is placed in bearing in the present embodiment, and bearing is placed in barrel shell 301, so that loading ability of bearing The draught head of precursor fluoran stream surface and lee side then protects the stability of precursor work.

The present invention is to make precursor high-speed motion in a word, then makes the fluid on power precursor opposite with power precursor Movement then reduces the fluid on power precursor to the pressure of power precursor, then makes pressure suffered by power precursor Less than pressure suffered by power rear-guard part, so that aircraft/boat hydrophone/submersible is obtained or improve locomotivity and (including rise Power and/or the active force moved horizontally).

In order to obtain better power effect, the precursor of the present embodiment also uses following gain techniques:

Gain scheme 1:

As shown in Fig. 4, Fig. 5, Fig. 2, the storage stream chamber 10 of the lee side one or more of the precursor 1, storage stream 10 1 end seal of chamber It closes, another end opening, the fluid for keeping storage stream chamber 10 intracavitary is connected to external fluid；The storage stream chamber 10 is equipped with the anti-escape machine of fluid Structure, the anti-escape mechanism of the fluid is shown in one end that storage stream chamber 10 is open to 31 output shaft 310 of motor in the present embodiment Distance is less than storage stream closed one end of chamber 10 to the distance of 31 output shaft 310 of motor, so that precursor 1 in rotary course, stores up The intracavitary fluid of stream chamber 10 cannot be flowed out because centrifugal force is flowed to closed one end from one end of opening.

Storage stream chamber 10 by the equal wall thickness hollow round table (being 101,102,103 in the present embodiment) of one or more and one or Above partition panel (being 2 piece 104,2 piece 105,2 piece 106,2 piece 107 in the present embodiment) composition；Equal wall thickness hollow round table direction The internal diameter of 302 one end of isolation board (hereinafter referred to as lower end) is less than the internal diameter backwards to 302 one end of isolation board (hereinafter referred to as upper end), and The outer diameter of 101 top and bottom is respectively smaller than the internal diameter of 102 top and bottom, the outer diameter of 102 top and bottom is respectively smaller than 103 The internal diameter of top and bottom, 101 are placed in 102, and 102 are placed in 103, and 101,102,103 upper end is all closed；Partition Plate 104,105,106 is uniformly distributed along 101,102,103 end diameters, and waits wall thickness hollow round table to be divided into 8 equal portions for each, conformal Chamber 10 is flowed at 24 storages.

Working principle:

As shown in figure 3, the decreasing value △ F3 of precursor lee side S2 upper fluid pressure plays damping action to power, and Isolation board 302 equally reduces towards the Fluid pressure on the surface S3 of precursor, the Fluid pressure decreasing value on the corresponding face S3 △ F4 plays gain effect to power；As shown in Figure 4, Figure 5, it since precursor lee side is equipped with storage stream chamber, and stores up The fluid for flowing chamber upper end (closed one end) than lower end (one end of opening) far from shaft, therefore entering from storage stream chamber lower end because from Mental and physical efforts are squeezed to upper end, and leave storage stream chamber without stream, are then obtained close to the movement velocity with the precursor with storage stream chamber, That is, precursor lee side S2 upper fluid relative to lee side S2 speed of related movement close to 0, therefore △ F3 is close to 0；Separately On the one hand, since isolation board 302 does not rotate, and the fluid on 302 plate face S3 of isolation board is rotated by the effect of precursor 1, That is fluid on 302 plate face S3 of the isolation board high-speed motion on the face S3, therefore △ F4 is greater than 0, and △ F4 is then made to be greater than △ F3, after And power mechanism acquisition and fluoran stream surface are improved towards power in the same direction.

Lee side is equipped with flow guiding structure (storage stream chamber), the ability of lee side and synchronised fluid movement can be improved, but simultaneously Also increase the surface area in Beiliu City face, when relative motion occurs for fluid, the pressure drop (pressure decreasing value) of generation can also mention simultaneously It is high.Therefore it needs to be balanced this, that is, as high as possible reaching moves synchronously, otherwise will generate reaction, and store up stream The perfect structure of chamber solves this technical problem.

Gain scheme 2:

The gain techniques of precursor can also use following technical scheme in the present embodiment:

Lubricating fluid is filled between precursor and isolation board.

Working principle:

Since liquid is relative to gas, having relatively can not be compressed and expanded, therefore during precursor high-speed rotation, than It is less easily overflowed between precursor and isolation board, is especially that on-circular moves in precursor movement, such as: back and forth movement When, stability becomes apparent from, even if more preferably guaranteeing not contact between precursor and isolation board.

Gain scheme 3:

As shown in fig. 6, the fluoran stream surface of precursor is a smooth sphere, lee side is Rough Horizontal Plane.

Working principle:

Fluoran stream surface is different from the area of lee side, and specific manifestation was within a period of motion, what fluoran stream surface all the points were passed through Path summation is greater than the path summation that lee side all the points are passed through；Since two face movement speeds are identical, in the unit time, The distance that fluid passes through on each face is different, i.e. flow velocity on two faces is different, and (flow velocity on fluoran stream surface is greater than lee side On flow velocity), then obtain that corresponding fluids pressure decreasing value is different, and specific manifestation is the relative motion of fluid and S1 on S1 Speed be higher than S2 on fluid and S2 speed of related movement, then make △ F3 be greater than △ F4, then make power mechanism obtain with Fluoran stream surface is towards power in the same direction.

Embodiment 2

A kind of aerodynamic flight device as shown in Figure 7, is equipped with multiple groups air force mechanism, and the air force mechanism is equipped with One or more precursors 1, pedestal 3, motor 2；The shaft of the precursor 1 is fixed on the upper surface of pedestal 3 by bearing 10, The shaft of precursor 1 is nested with gear 11, and each 1 gear 11 of precursor is formed by chain 13 and the gear on 2 output shaft of motor Transmission chain connect；The end of motor is fixed by the bracket on the base 3.The fluoran stream surface of precursor is a smooth sphere, and lee side is Rough Horizontal Plane.Partition is not set between each precursor, the air-flow on adjacent precursor fluoran stream surface is allow to influence each other.At least exist A pair of two adjacent precursors turn to opposite.

Working principle:

Unlike the first embodiment, the present embodiment distance between precursor and rear-guard part (pedestal) is unsatisfactory for: the gas on pedestal Body by precursor effect and high-speed motion, then reduce pedestal on air pressure；And precursor and rear-guard part (pedestal) it Between be also not provided with isolation board；Its principle for generating lift is as follows:

Embodiment 3

Such as Fig. 8, Fig. 4, a kind of aerodynamic vehicle shown in fig. 5, it is equipped with multiple groups air force mechanism, the air motor Structure is equipped with one or more precursors 1, pedestal 3, motor 2；The shaft of the precursor 1 is fixed on pedestal 3 by bearing 10 Upper surface, the shaft of precursor 1 are nested with gear 11, and each 1 gear 11 of precursor passes through the tooth on chain 13 and 2 output shaft of motor Wheel forms transmission chain connect；The end of motor is fixed by the bracket on the base 3.1 fluoran stream surface of precursor is smooth surface, lee side Storage stream chamber 10 equipped with one or more, storage stream chamber 10 is closed at one end, another end opening, makes the storage intracavitary fluid of stream chamber 10 and outer Boundary is in fluid communication；Storage stream chamber 10 is equipped with the anti-escape mechanism of fluid, in the present embodiment the anti-escape mechanism of the fluid show in The distance of one end to 31 output shaft 310 of motor that storage stream chamber 10 is open is less than storage stream closed one end of chamber 10 to 31 output shaft of motor 310 distance so that precursor 1 is in rotary course, the intracavitary fluid of storage stream chamber 10 because centrifugal force is flowed to closed one end, And it cannot be flowed out from one end of opening.

Working principle: with 1 gain scheme 1 of embodiment.

" more swirling fluid control methods " can be used in above three embodiments to reinforce fluid flow rate, specifically includes: in Heart fluid control method and circular fluid control method；The core flow control method is to make core flow with certain orientation height Speed rotation, the circular fluid control method is the fluid for making core flow axis, with the opposite direction high speed of core flow Rotation, so that the two cooperation can make the fluid controlled form more whirlpool body surrounding effects, and specifically by following embodiment It is bright:

Embodiment 4

A kind of aerodynamic vehicle as shown in Fig. 9, Figure 10, Figure 11 is equipped with one or more groups of air force mechanisms, every group of air Power mechanism is equipped with one or more air forces mechanism；The air force mechanism includes power precursor 1 and power mechanism 3；Power mechanism 3 includes main body 30, motor 31, battery 32 and control cabinet 33；Main body 30 includes barrel shell 301,302 and of isolation board Drainage plate 303, the isolation board 302 are fixedly arranged on wherein one end in barrel shell 301 and close to barrel shell 301, and the drainage plate 303 is set In 301 open end of barrel shell；The motor 31 is fixedly arranged on isolation board 302, and the end of the output shaft 310 of motor 31 is nested with one and prolongs Long portion；The extension on the position between precursor 1 and isolation board 302 ring set 2 or more ventholes 310；Before described On the extension for driving the output shaft that is placed on motor 31 of part 1, and it is divided into motor 31 two sides of isolation board 302；The extension Portion passes through precursor 1, and the end of extension is equipped with air inlet 311, and the air inlet 311 is connected to venthole 310.

As shown in Figure 10,303 hollow portion of drainage plate is in a circular table shape, the diameter D of the lower end diameter d < of upper end；

As shown in figure 11, the lee side of precursor 1 is equipped with centrifuge blade, and the fluid between precursor and isolation board is in centrifuge blade Under the action of, it is thrown away from gap 2, and squeezed out from drainage plate 303, eventually enters into air inlet 311, then again from venthole 310 It is recycled into completing one between precursor and isolation board.

Of particular note is that: circumferential movement speed S2 is less than S3, radial motion speed S2=S3, therefore the conjunction on S2 Speed is less than the conjunction speed on S3.Air pressure decreasing value is less than air pressure decreasing value on isolation board i.e. on precursor lee side, because before this The fluid driven between part and isolation board has gain effect to the active force of power mechanism.

The present embodiment can sufficiently recycle fluid dynamic energy so that fluid is done once can at least reuse it is primary remaining Power supply of the kinetic energy as next period, therefore the energy loss after operation will will be greatly reduced, while improve engine Structure power performance and there is the low, environment-friendly type that consumes energy, therefore be respectively used alone can also be with united application for above-described embodiment.

By embodiment 1-4 it can be concluded that

1) rear-guard part is not the position certainly existed；

2) rear-guard part area increased can not obtain bigger gain effect because using nonplanar projected area still with it is preceding Drive face is identical, therefore can not obtain power；But exactly because the fluid velocity difference in face is driven in front and back, to obtain lift；

3) it when there are rear-guard part, can not be fully sealed between precursor and rear-guard part, therefore there will necessarily be certain air, With the air communication other than power mechanism, therefore the effect of the lee side in forerunner face still atmosphere, it is therefore necessary to consider how to disappear Except precursor lee side air pressure reduces brought damping (if do not solved, lift can not be generated at all, at least makes to advance The reduced value of direction air pressure is less than the decreasing value for reversed air pressure of advancing);Due to impossible completely close between precursor and rear-guard part Envelope, therefore a face S face precursor lee side must be deposited, and advance of the decreasing value of face S upper fluid pressure to power mechanism Play gain effect；It can be seen that air pressure decreasing value institute suffered by precursor lee side can be overcome by the decreasing value of air pressure suffered by the S of face The damping of generation.The present invention especially reduces control precursor back stream by the spacing of control precursor lee side and face S It is identical with the atmospheric density on precursor lee side to make face S for the spacing in face and face S, while precursor being made to drive the fluid on the S of face Flowed on the S of face, then realize the speed of related movement of the upper air of face S and face S be higher than on precursor lee side air and The speed of related movement of precursor lee side then makes air pressure suffered by the S of face be less than the air on precursor lee side Pressure.

4) when there are rear-guard faces, since with rear-guard face relative motion, pressure change do not occur for the fluid on rear-guard face It is worth close to 0.

Embodiment 5

A kind of empty power power aerial vehicle as shown in figure 11, is equipped with precursor 1 ', assembly room 2 '；In power mechanism direction of advance On, rear-guard part 2 ' is set in the chamber of assembly room 2 ', and the upper surface hollow out of assembly room 2 ' connects the fluoran stream surface of precursor 1 ' directly Air is touched, one end fixed straight line motor 3 ' of assembly room 2 ', the output axis connection of linear motor 3 ' simultaneously drives precursor 1 ', before making Part 1 ' is driven in assembly room 2 ' toward counter-movement, then sends out the fluoran stream surface of air and precursor 1 ' on 2 ' hollow out position of assembly room Raw relative motion, then reduces the air pressure on the fluoran stream surface of precursor 1 '.

Except 1 ' space of precursor is filled with lubricating fluid in assembly room 2 '.

The preferable following scheme of embodiment 1-5:

The power precursor is equipped with several areas, and by controlling the fluid velocity at least 2 on same power precursor, adjustment is dynamic The steering of power device in space.

Claims

1. a fluid dynamic method, it is characterized in that: a power precursor is set on the power mechanism, so that the side facing the forward direction of the power mechanism on each component of the power mechanism is an up-flow surface, and the side facing the forward direction of the power mechanism is a back flow. The upstream surface of the power precursor satisfies the pressure of the fluid on the power precursor to dampen the advance of the power mechanism; the hydrodynamic method is to drive the power precursor to move, and then make the upstream surface of the power precursor move. The fluid and the power precursor move relative to each other, thereby reducing the pressure of the fluid on the upstream surface of the power precursor on the upstream surface of the power precursor, so that the movement of the precursor has a beneficial effect on the advancement of the power mechanism.

2. A fluid dynamic method as claimed in claim 1, characterized in that: the power mechanism is provided with a power rear drive member, and the back flow surface of the power rear drive member satisfies the pressure of the fluid on the power rear drive member It has a gain effect on the advancement of the power mechanism; the fluid dynamic method includes adopting a fluid damping reduction method to reduce the damping effect of the fluid motion between the backflow surface of the front drive and the rear drive on the advancement of the power mechanism.

3. A fluid dynamic method as claimed in claim 2, characterized in that: the fluid damping reduction method is to make the flow velocity of the fluid on the backflow surface of the power precursor be smaller than that of the power precursor on the power mechanism. The flow rate of the fluid on the surface of the part.

4 . The fluid dynamic method of claim 2 , wherein the fluid damping reduction method is to make the flow velocity of the fluid on the backflow surface of the dynamic precursor smaller than the flow velocity of the fluid on the upstream surface of the dynamic precursor. 5 .

5. A fluid dynamic method as claimed in claim 2, characterized in that: further, keeping the rear drive member from moving, or making the rear drive member move to produce a damping effect on the power mechanism is smaller than the front drive during the movement of the front drive member. The fluid on the front side of the front drive has a gain effect on the power mechanism; then the pressure of the fluid on the front side of the front drive is lower than the pressure of the fluid on the back side of the rear drive.

6 . The fluid dynamic method according to claim 1 , wherein the driving member forms a trajectory in one motion cycle, and at least 30% of the motion on the path is not a circular motion. 7 .

7. A fluid dynamic method as claimed in claim 1, characterized in that: the distance between the precursor and the power mechanism satisfies: the fluid on the surface of the power mechanism facing the backflow surface of the precursor It moves under the action of the precursor and reduces the fluid pressure on the surface of the powertrain that is opposite the backflow surface of the precursor.

8. A fluid power mechanism, characterized in that: the powered aircraft is provided with a power front driver and a power rear driver; the power front driver is connected to a power mechanism, and the power mechanism drives the power front driver to move, causing the power front driver to move on the power front driver. The fluid moves relative to the power precursor, thereby reducing the pressure of the fluid on the power precursor to the power precursor.

9. A fluid power mechanism as claimed in claim 9, characterized in that: it is provided with one or more groups of precursors, and each group of precursors is provided with one or more precursors.