WO2012099291A1 - Dispositif de propulsion pour un corps en mouvement, utilisant le principe des ondes progressives, ainsi que procédé correspondant - Google Patents

Dispositif de propulsion pour un corps en mouvement, utilisant le principe des ondes progressives, ainsi que procédé correspondant Download PDF

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Publication number
WO2012099291A1
WO2012099291A1 PCT/KR2011/001010 KR2011001010W WO2012099291A1 WO 2012099291 A1 WO2012099291 A1 WO 2012099291A1 KR 2011001010 W KR2011001010 W KR 2011001010W WO 2012099291 A1 WO2012099291 A1 WO 2012099291A1
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Prior art keywords
traveling wave
propulsion device
propulsion
driving
force
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PCT/KR2011/001010
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English (en)
Korean (ko)
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김달현
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Kim Dal Hyun
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Publication date
Priority claimed from KR1020110005604A external-priority patent/KR101182979B1/ko
Application filed by Kim Dal Hyun filed Critical Kim Dal Hyun
Publication of WO2012099291A1 publication Critical patent/WO2012099291A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/30—Propulsive elements directly acting on water of non-rotary type
    • B63H1/37—Moving-wave propellers, i.e. wherein the propelling means comprise a flexible undulating structure
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
    • H02N2/08—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors using travelling waves, i.e. Rayleigh surface waves

Definitions

  • the present invention relates to a propulsion device for a moving body using a traveling wave principle, and more particularly, to a propulsion device in which a plurality of variable members are provided so as to be continuously arranged, And the driving force provided to the adjacent deformable member is controlled to have a phase difference with respect to each other so that the driving force of the propelling device
  • a traveling wave whose shape changes periodically according to time is implemented and a traveling wave direction force is applied to a fluid or a fixed object by the traveling wave and a reaction force is generated by the traveling wave direction, .
  • a moving body propels in a fluid such as a gas or a liquid acts on a fluid in a direction opposite to a propelling direction (hereinafter referred to as " reverse " direction) of the moving body by reciprocating motion or rotational motion of the propelling device, It is the principle of action and reaction that generate momentum by reaction.
  • the motion of the propulsion device includes a propulsion motion which acts on the fluid.
  • a propulsion motion which acts on the fluid.
  • a propulsion movement a movement in which the nose is immersed in water and acts in the opposite direction to the water
  • a movement in which the nose moves in all directions on the water is a return movement.
  • the propulsive force of the boat is generated only by the propulsion movement in which the nog is immersed in the water and forces the water in the reverse direction.
  • the return motion in which the nose moves in all directions on the water is for the next propulsion motion and does not generate propulsion force.
  • the reverse propulsive force generated by the return movement can be neglected compared with the propulsive force, but propulsion and return motion in the same fluid
  • the reverse thrust generated by the return motion is of a size that can not be ignored, which is an important consideration in the design of the propulsion device.
  • the energy-efficient propulsion device should be designed so that the energy required for returning motion is minimized or the propulsion motion is continuously performed without returning motion.
  • the propeller method is a structure in which several wings are fixed to the rotating body at all angles and at a constant inclination angle, and a reverse force is applied to the fluid by the rotation of the wing, and the moving body is propelled by the reaction.
  • the speed and propulsion of the moving body are controlled by the number of revolutions of the propeller.
  • Such a propeller system is one of the most popular propulsion systems for continuous propulsion without return motion.
  • the inevitable rotational motion causes energy wastage.
  • the fluid is rotated in the same direction as the wing rotation direction, and the spiral motion is performed in the opposite direction. At this time, only the energy pushing the fluid in the opposite direction generates the thrust, and the energy that rotates the fluid does not generate the thrust.
  • the energy that rotates the fluid also causes the moving body to rotate in the opposite direction or vortex in the fluid to affect the propulsion of the moving body.
  • the force acting on the fluid varies from the axis of rotation to the radius of rotation of the wing.
  • This force is to the axis of rotation, the smaller and larger the force becomes.
  • This causes an imbalance in the propulsive forces generated on the propeller rotating surface.
  • the inclination angle of the wing is designed to vary according to the turning radius, but it is not compensated for all the speed of the moving object.
  • the propeller method has a fixed wing area and an inclination angle, and thus rotates the wing at a high speed in order to increase the propulsive force.
  • the fluid pressure around the propeller is lower than the vaporization pressure of the fluid, the fluid is vaporized and bubbles are generated. This is called cavitation, which reduces propulsion of the moving body, damages the propeller, and causes vibration and noise.
  • the present invention has been proposed in order to solve the problems of the prior art, and unlike the conventional propulsion device in which propulsion is generated by reciprocating motion or rotational motion of the propulsion device, the shape of the propulsion device changes with time, And a propulsion system in which propulsion is generated by the propulsion system.
  • wave theory is a theory that describes the phenomenon of transferring energy by vibrational motion of a medium.
  • a simple example is that a violin string's vibration corresponds to a standing wave, and a sea wave corresponds to a traveling wave. All of these examples are phenomena in which energy is transferred by the oscillation motion of the medium.
  • an object may vibrate in a medium such as a fluid.
  • a furnace which is the propulsion unit of a boat
  • the movement of a string when it is held up at one end of the string and shook it up and down both cause the object to vibrate in the fluid.
  • the motion of the furnace is a movement corresponding to a Standing Wave in which the position of the boat (the end of the furnace) and the position of the node (middle portion of the boat fixed to the boat) are unchanged. It is a movement corresponding to a progressive wave.
  • the movement of the rope moves the position of the rope opposite to the traveling wave direction. If you run it in a fluid that has the same mass and width as the cord, or a fluid with a specific gravity, such as water, the position of the cord is shifted more. This is because the fluid is pushed by the traveling wave of the cord and the cord is moved by the reaction.
  • the propulsion method of the present invention is a method in which the propulsive force is generated by the shape change of the propulsion device, similar to the traveling wave of the cord.
  • the present invention provides a propulsion device in which a plurality of variable members are continuously arranged to change the shape of the propulsion device, and each of the deformable members is driven by a plurality of driving forces provided by the driving portions,
  • the control unit controls the plurality of driving forces provided by the driving unit to vary periodically with time so that the driving force provided to the adjacent deformable members is controlled to be phase difference with respect to each other, Whereby the propulsion device is continuously deformed with time.
  • an object of the present invention is to provide an effective propulsion device and method for a moving object using traveling wave principle that provides continuous propulsion motion without rotational motion and return motion in motion of the propulsion device.
  • a driving apparatus for a vehicle comprising: a driving unit for providing a plurality of driving forces and controlling the driving forces to periodically change with time, Wherein the plurality of variable members are continuously arranged and each variable member is driven by the driving force provided by the driving unit so that the propulsion unit is deformed to a desired shape by a plurality of driving forces provided by the driving unit, And a propulsion device in which a progressive wave is periodically deformed to realize a progressive wave.
  • a propulsion method for a moving body using a traveling wave principle comprising: (a) generating and controlling a plurality of different driving forces in a driving unit so that the propulsion unit is deformed to a desired shape, Respectively; (b) deforming the plurality of deformable members, respectively, when a plurality of driving forces having different phase differences are provided from the driving unit to the plurality of deformable members of the propulsion unit, respectively; (c) controlling a plurality of driving forces provided to each deformable member to change periodically with time, thereby causing the propelling device to be periodically deformed with time; (d) implementing a progressive wave continuously running according to characteristics of the driving force provided to the propulsion device; And (e) a wavefront of a traveling wave implemented in the propulsion device applies a reverse force to a fluid or a fixed object in contact with the propulsion device, and a reaction force is generated by the reaction.
  • a plurality of driving forces are generated in the driving part according to a desired form of the propulsion device, and the phase difference of the driving force is controlled to be different from each other, ,
  • a progressive wave is implemented in a propulsion device, a force acting in a reverse direction is applied to a fluid or a fixed object by the traveling wave, and a reaction force is generated by the reaction.
  • the present invention provides an energy-efficient propulsion device for a mobile body by eliminating energy loss due to rotational or reciprocating motion of an existing propulsion device.
  • FIG. 1 is a view for explaining that one deformable member 10, which is an electroactive substance, is deformed in response to a power source.
  • FIG. 2 is a view for explaining a propulsion apparatus 20 in which a plurality of deformable members 10 are arranged on a one-dimensional line.
  • Fig. 3 is an overall configuration diagram of a propulsion device for a moving body using the traveling wave principle according to the present invention
  • Figure 4 is a view for explaining a plurality of power source E i provided by the driving device 20 in the driver 30.
  • FIG. 5 is a view for explaining the relationship between the propulsion device 20 and a plurality of power sources E i ;
  • FIG. 6 is a view for explaining a process in which a plurality of power sources E i and a traveling wave y change with time;
  • FIG. 7 is a diagram illustrating a process in which wavefront 71 of traveling wave y implemented in propulsion device 20 exerts a force on fluid 72;
  • FIG. 8 is a view for explaining the kind of the one-dimensional traveling wave propulsion device 20 in which the deformable members 10 are arranged on a one-dimensional line.
  • FIG 9 is a view for explaining a two-dimensional traveling wave propulsion device 90 in which the deformable members 10 are arranged on a two-dimensional plane.
  • FIG. 10 is a view for explaining a three-dimensional traveling wave propulsion device 100 in which a deformable member 10 is arranged in a three-dimensional space.
  • FIG. 11 is a flowchart illustrating a method of driving a moving object using a traveling wave principle according to an embodiment of the present invention.
  • variable member 11 longitudinal section of the deformable member
  • driving unit 31 power source
  • controller 33 multiple output device
  • the traveling wave propulsion device of the present invention is a propulsion device in which the shape is periodically changed to generate propulsive force.
  • the propulsion device is configured such that a plurality of deformable members are continuously arranged, and the propulsion device is periodically deformed by a plurality of driving forces provided by the driving portion.
  • One of such propulsion systems is to provide a mechanical structure that converts rotational motion into wave motion.
  • the propulsion device having such a mechanical structure is provided with a plurality of variable members such as a conventional reciprocating propulsion device, that is, a boat furnace, arranged continuously, and the reciprocating motions of the respective deformable members are controlled so as to be phase- It is a method to implement traveling wave.
  • Another method is a method of using an electroactive substance as a material of the deformable member in the same manner as described in the embodiment of the present invention. It is preferable that the electroactive substance is used as a variable member of the propulsion device in the present invention which provides a propulsion device which is easily deformed by a power source and changes its shape.
  • Typical electroactive substances developed so far include carbon nanotubes, electroactive polymers, shape memory alloys, and electroactive ceramics. , And various other materials are being studied.
  • a propelling device is provided with a deformable member using an electroactive substance, and a method in which a power source is provided as a driving force for driving the deformable member is described.
  • 1 is a diagram for explaining that one deformable member 10, which is an electroactive substance, is deformed (bent) in response to a power source.
  • the propulsion device composed of one deformable member 10 is similar to the conventional propulsion device that reciprocates according to the input power source.
  • FIG. 2 is a view for explaining a propulsion device 20 in which a plurality of deformable members 10 are arranged on a one-dimensional line.
  • the propulsion device 20 is configured such that a plurality of the deformable members 10 are successively arranged on a one-dimensional line and adjacent deformable members 10 are fixed to each other using methods known in the art,
  • the members 10 are provided with different power sources as shown in Fig. 3 and are deformed independently of each other.
  • the method of continuously arranging the deformable members can be easily carried out in accordance with the present invention by a person having ordinary skill in the art, and it is natural that the difference of the arranging method is within the scope of the present invention.
  • the propulsion unit 20 is deformed into various shapes according to the input power source. Since each power source changes with time, the shape of the propulsion device 20 also changes with time. Further, when each of the power supplies is controlled to have a phase difference with each other and the frequency and amplitude are controlled and provided to the propulsion device 20, progressive wave motion that progresses with time is implemented in the propulsion device 20.
  • FIG. 3 is an overall configuration diagram of a propulsion device for a moving object using the traveling wave principle according to the present invention.
  • the propulsion device of the moving object using the traveling wave principle includes a plurality of deformable members 10 that are continuously arranged using an electroactive substance, and adjacent deformable members 10 A propulsion device 20 fixed to each other using methods known in the art and being deformed into a desired shape when a different controlled power source is provided to each deformable member 10; And a driving unit 30 for providing the variable member 10 of the propulsion device 20 with a plurality of power sources controlled so that the propulsion device 20 is changed to a desired shape.
  • FIG. 4 is a view for explaining a plurality of power sources E i provided to the propulsion device 20 in the driving unit 30 of FIG.
  • the driving unit 30 includes a multiple output unit 33 connected to the power source 31 at one side and a plurality of power sources E i connected to the controller 32 at the other side.
  • the power is the signal for controlling each of the waveform and the phase of the power source E i to provide a common power supply to the multi-output unit 33 is supplied, the controller 32 in the driving device 20, a multi-output unit 33, .
  • the multiple output device 33 generates and supplies to the propulsion device 20 a plurality of power sources E i whose waveforms and phases are controlled in accordance with the power source and control signal input from the power source 31 and the controller 32, respectively .
  • FIG. 5 is a diagram for explaining the relationship between the propulsion device 20 and a plurality of power sources E i .
  • the power source E 1 is connected to the first variable member 10 of the propulsion device 20
  • the power source E 2 is connected to the second variable member 10
  • the power source E i is connected to the i-th variable are respectively connected to a member (10)
  • ⁇ i is the phase difference between E i to E 1.
  • each variable-member 10 of Figure propulsion device 20 when the plurality of power source E i that make up forms, such as in 5 (b) are each provided in the deformable member 10 of the driving device 20 is independently The propulsion device 20 is deformed as shown in FIG. 5 (a).
  • each deformable member is adjacent the deformable member yet permit the deformation independently are bound to each other deformation, so as a whole, and this strain as one strain, and variants of the plurality of power source E i of Figure 5 constituting (b ). ≪ / RTI >
  • Equation (1) the function f i is a power supply provided to the i-th variable member 10 arranged in the propulsion unit 20, and represents a power source in a periodical form according to time.
  • each deformable member 10 When the power source E i provided to the propulsion device 20 is controlled according to Equation 1 and provided to each of the i-th deformable member 10 of the propulsion device 20, each deformable member 10 generates an input power E i And the deformation of the deformable member 10 changes periodically with time because the power source E i varies periodically with time. In this modification, the shape of the propulsion device 20 is periodically changed, and a progressive wave is implemented in the propulsion device 20. [
  • the angular frequency ⁇ of the power source E i and the angular frequency ⁇ of the progressive wave implemented in the propulsion device 20 are equal to each other.
  • is the largest value, and has an arbitrary real number value greater than zero.
  • n is sufficiently large and ⁇ n is ⁇
  • a half wave traveling wave is implemented in the propulsion device 20, one wavelength is realized when 2 ⁇ , and two wavelengths are realized when 4 ⁇ .
  • Equation (2) M is a real number greater than 0, and the closer to 0, the larger the wavelength lambda, and vice versa.
  • the wave number k is defined as 2? /? According to the wave theory, the wave number k of the progressive wave implemented in the propulsion device 20 according to Equation (2) 3.
  • the power source E i is provided to each deformable member 10, and the traveling wave wave function y implemented in the propulsion device 20 is expressed by Equation (4) below.
  • Equation (4) the function g is a periodic traveling wave function representing the degree of deformation of the propulsion device 20 according to time and displacement.
  • the functions f i and g are periodic functions in which sin, cos, or several functions are superimposed.
  • Equation (5) the traveling speed v of the traveling wave y implemented in the propulsion device 20 is expressed by Equation (5) below as in Equation (4).
  • the traveling wave length fixed by the driving unit 20 is determined by the angular frequency ⁇ of the phase difference ⁇ n and the power source E i.
  • the amplitude of the traveling wave y is determined by the physical characteristics and electrical characteristics of the variable member 10.
  • FIG. 6 is a view for explaining a process in which the power source E i and the traveling wave y change with time and displacement.
  • propulsion device 20 is illustrated in accordance with a plurality of power source E i, the time interval ⁇ t, and take the right side input of E i is modified according to time and displacement are shown provided in, the drive section 30, the left side of Figure 6, Where E i is the power provided to the i th variable member and E n is the power provided to the n th last variable member.
  • the shape of the power source E i and the traveling wave y when the time is t is shown in FIG. 6 (a).
  • the power E 1 supplied to the first deformable member 10 is continuously shifted as E 1 -> E 2 -> E i -> E n - 1 -> E n as the time t is changed by ⁇ t .
  • E 1 is E n -> E 1 or a new power supply is provided.
  • variable member As the power supplied to each variable member continuously changes as described above, the entire variable member increases in time by? T, so that the shape of the propulsion device 20 is changed in the form of traveling wave .
  • FIG. 7 is a view for explaining a process in which a wavefront 71 of a traveling wave y implemented in the propulsion device 20 (a surface of a waveform formed by deforming the entire propulsion device) acts on the fluid 72 in a reverse direction.
  • the wavefront 71 of the traveling wave acts on the fluid 72 in the traveling direction 73 of the traveling wave 73, A reaction occurs in the direction 74 opposite to the direction of the traveling wave.
  • each of the wavefronts 71 exerts a reverse force on the fluid 72, so that reaction occurs on both sides of the propulsion device 20, and all the reactions are added, It becomes propulsion.
  • the angular frequency ⁇ of the traveling wave y implemented in the propulsion device 20 is equal to the angular frequency ⁇ of the input power source E i and the wavelength ⁇ of the traveling wave y is determined by the length L and the phase difference ⁇ n of the propulsion device 20, do.
  • the traveling speed v of the traveling wave is proportional to the speed at which the fluid is pushed
  • the size of the wave front is proportional to the amplitude and the area of the propulsion device 20
  • the amount of fluid pushed is proportional to the traveling speed and amplitude of the traveling wave and the area of the propulsion device 20.
  • traveling velocity v of the traveling wave is greater than the flow velocity 75 in accordance with the above description when the velocity of the traveling wave 75 is the reference of the propulsion device 20 and the direction of the flow velocity 75 is in the opposite direction If the traveling velocity v of the traveling wave is smaller than the flow velocity 75, the reverse thrust is generated. If the traveling velocity 75 and the travel velocity v of the traveling wave are the same, no thrust is generated.
  • the area of the traveling wave propulsion device 20 and the amplitude of the traveling wave correspond to the area of the propeller blade
  • the traveling wave wavelength corresponds to the inclination angle of the blade
  • the propeller method controls the propulsive force only by the number of revolutions, but since the propagation propulsion method can be performed by amplitude, wavelength, and frequency, it provides an efficient control method depending on the flow velocity and the characteristics of the fluid.
  • the traveling wave energy is transmitted through one place where the rope is caught and shaken, but the present invention is transmitted through all the variable members 10 arranged in the propulsion device 20.
  • the traveling wave of the cord runs, the wave form becomes smaller and eventually disappears, but the traveling wave of the propulsion device 20 is controlled and maintained in a desired shape.
  • FIG. 8 is a view for explaining the kind of the one-dimensional traveling wave propulsion device 20 in which the deformable members 10 are arranged on a one-dimensional line.
  • Fig. 8 (a) shows the propulsion device 20 in which the deformable members 10 are continuously arranged on a one-dimensional line, as shown in Fig.
  • the driving device 20 is arranged such that the longitudinal sides 11 of the adjacent deformable members 10 are connected to each other.
  • the wave function of the traveling wave is a one-dimensional wave as shown in Equation 4, Deformed (bent) and the traveling wave proceeds along the x-axis.
  • the propulsion apparatus provided with the plate-like deformable member 10 is preferably used in the fluid, and the propulsion apparatus provided with the rod-shaped deformable member is arranged on the fixed object Is preferably used.
  • a propulsion device provided with a plate-like deformable member provides a propulsion device similar to a fish body, and a propulsion device provided with a rod- Device.
  • each of the deformable members 10 is deformed (bent) on the yz plane, but the traveling wave generated by each deformable member 10 advances along the x axis perpendicular to the yz plane.
  • the two propelling devices 80 may be fixed to the left and right sides of the moving body, or the four propelling devices 80 may be fixed to the left, right, upper, and lower sides of the moving body, respectively.
  • the propulsion device 80 provides a propulsion device similar to the fins of a fish.
  • the traveling wave propulsion device of the present invention is provided by determining n and M values defined in Equations (1) and (2) according to the physical characteristics of the fluid in which the propulsion device is used. For example, in the case of a compact and compact gas, such as air, a liquid with a high density and little compressibility, such as water, and a fixed object such as a ground, It is preferable to reduce the amplitude and the frequency of the traveling wave. In the case of the base, it is preferable to make n and M small and increase the amplitude and frequency of the traveling wave.
  • n and M in Fig. 8 (b) are reduced (for example, n is 4 or less and M is 1/2 or less), and two propulsion devices having larger amplitudes and frequencies of traveling waves are disposed on both left and right sides It is preferable to drive it by being fixed.
  • the propulsion device 80 which reduces n and M and increases the amplitude and frequency of the traveling wave, provides a propulsion device similar to an insect's wings.
  • the one-dimensional traveling wave propulsion device generates propulsive force in both forward and backward directions according to the traveling direction of the wave.
  • the 9 is a two-dimensional traveling wave propulsion device 90 in which the deformable members 10 are arranged on a two-dimensional plane, and the shape of a traveling wave is a two-dimensional wave.
  • the two-dimensional traveling wave propulsion device 90 is easy to move by controlling the direction of the waves in the front, back, left, and right directions in a plan view, and the propulsion device is large because the area of the propulsion device is large.
  • Equation (6) The two-dimensional wave function z is expressed by Equation (6) below.
  • traveling waves implemented in the two-dimensional traveling wave propulsion device simultaneously travel in the same direction, they are analyzed in the same manner as the one-dimensional traveling wave.
  • the deformable member 10 is arranged in a three-dimensional space, and the shape of a traveling wave is a three-dimensional wave.
  • the propulsion device 100 is a propulsion device using a characteristic in which a variable member is changed in response to a power source and its volume is changed. Since the propagation wave propagates in forward and backward directions along the x axis, the propagation wave is analyzed in the same manner as the one- .
  • the wavefront of the traveling wave implemented in the propulsion device 100 is similar to the round ellipsoid, and the propulsive forces generated from the respective wavefronts are rotationally symmetric with respect to the x-axis.
  • the three-dimensional propulsion device 100 is more preferable than the one-dimensional propulsion device 20 or the two-dimensional propulsion device 90 for a larger and more stable propulsion force in the fluid.
  • FIG. 11 is a flowchart illustrating a method of driving a moving object using a traveling wave principle according to an embodiment of the present invention.
  • the driving method of the moving body using the traveling wave principle is a method for generating and controlling a plurality of different power sources E i in the driving unit 30 so that the propulsion unit 20 is transformed into a desired shape, (S100);
  • a plurality of power sources E i having different phases are provided to the plurality of deformable members 10 of the propulsion unit 20 from the driving unit 30, the plurality of deformable members 10 are deformed S200;
  • Each variable-member driving device 20, thereby controlling the plurality of power source E i to vary periodically with time provided in (10) is periodically modified according to the time (S300);
  • the pushing traveling wave (Wave Progressive) are continuously conducted in accordance with the plurality of characteristics of the power source E i provided in the deformable member 10 of the device 20 is implemented (S400);
  • the wavefront of the traveling wave implemented in the propulsion device 20 acts on the fluid or fixed object in contact with the propulsion device in a reverse direction and generates a propulsive force in response to the wave in step S600.
  • the propulsion device 20 using the traveling wave principle according to the present invention can effectively propel a moving body not only on a fluid such as a gas and a liquid but also on the ground, Thereby providing an energy-efficient propulsion device.
  • the driving force for driving the deformable member is described using a power source.
  • the present invention is not limited to this, and may include pneumatic, hydraulic, and mechanical power.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)

Abstract

La présente invention concerne un dispositif de propulsion pour un corps en mouvement, utilisant le principe des ondes progressives, ainsi qu'un procédé correspondant. Une section d'entraînement produit une pluralité de forces d'entraînement et commande des modifications périodiques des forces d'entraînement en fonction du temps, afin de produire des différences de phase. Une pluralité d'éléments variables est montée en série et est entraînée par les forces d'entraînement qui sont fournies par la section d'entraînement et qui sont indépendantes les unes des autres. De ce fait, un dispositif de propulsion peut être déformé pour prendre une forme voulue par la pluralité de forces d'entraînement fournies par la section d'entraînement et des ondes progressives sont mises en œuvre dans le dispositif de propulsion par l'intermédiaire de la déformation continue de la forme sous le contrôle de la section d'entraînement. Lorsque les ondes progressives mises en œuvre avancent, un front des ondes progressives exerce une force sur un fluide ou sur un objet fixe dans une direction opposée et un procédé est fourni pour exploiter des forces de propulsion produites par la réaction. En outre, les pertes d'énergie dues au mouvement alternatif ou au mouvement de rotation des dispositifs conventionnels de propulsion peuvent être évitées, de sorte que l'on obtienne un dispositif de propulsion à haute efficacité.
PCT/KR2011/001010 2011-01-19 2011-02-16 Dispositif de propulsion pour un corps en mouvement, utilisant le principe des ondes progressives, ainsi que procédé correspondant WO2012099291A1 (fr)

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KR1020110005604A KR101182979B1 (ko) 2010-02-20 2011-01-19 진행파 원리를 이용한 이동체의 추진장치 및 그 방법

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US9375690B2 (en) 2009-08-24 2016-06-28 The University Court Of The University Of Glasgow Fluidics apparatus and fluidics substrate
US9410873B2 (en) 2011-02-24 2016-08-09 The University Court Of The University Of Glasgow Fluidics apparatus for surface acoustic wave manipulation of fluid samples, use of fluidics apparatus and process for the manufacture of fluidics apparatus
US11311686B2 (en) 2014-11-11 2022-04-26 The University Court Of The University Of Glasgow Surface acoustic wave device for the nebulisation of therapeutic liquids
CN114802672A (zh) * 2022-05-19 2022-07-29 南京航空航天大学 一种单模态贴片式压电驱动的摆动鳍装置及驱动方法

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