CN209366480U - A kind of Ducted propeller - Google Patents
A kind of Ducted propeller Download PDFInfo
- Publication number
- CN209366480U CN209366480U CN201920033727.8U CN201920033727U CN209366480U CN 209366480 U CN209366480 U CN 209366480U CN 201920033727 U CN201920033727 U CN 201920033727U CN 209366480 U CN209366480 U CN 209366480U
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- ion
- ducted propeller
- deflecting device
- duct shell
- cathode portion
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Abstract
The utility model discloses a kind of Ducted propellers, including duct shell, anode portion, cathode portion and at least one ion deflecting device；Wherein, the centre of the duct shell surrounds the airflow channel of perforation, and the anode portion and the cathode portion are not set to the top and lower part of the airflow channel, are used to form electrostatic field；The ion deflecting device is set in the airflow channel or the inner cavity of the duct shell, and position of the ion deflecting device between the anode portion and the cathode portion, for changing the direction of ion jet flow.The utility model has the following beneficial effects: the Ducted propeller is using air ion as power, structure is simplified, the driving motor of traditional Ducted propeller and the fan part of rotation is eliminated, reduces costs, and it can reduce the quality of Ducted propeller, improve efficiency.
Description
Technical field
The utility model relates to duct puopulsion equipment technical field, in particular to a kind of Ducted propeller.
Background technique
Existing Ducted propeller usually has duct circle, fan component and driving motor and electric machine support, and is arranged
Corresponding pneumatic deflection rudder face, rudder face servo mechanism etc., structure is complicated, is related to many components, and between each components
Control is more complicated；Components excessive in actual use not only have certain weight, but also one of components
After trouble or failure, entire Ducted propeller can all be can not work normally.
Therefore, power can be generated not against the rotation of blade by how providing one kind, provide a kind of simple duct of structure
Propeller is the important technological problems that those skilled in the art need to solve at present.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of Ducted propeller comprising duct shell, anode
Portion, cathode portion and at least one ion deflecting device；Wherein, the centre of the duct shell surrounds the airflow channel of perforation,
The anode portion and the cathode portion are not set to the top and lower part of the airflow channel, are used to form electrostatic
?；
The ion deflecting device is set in the airflow channel or the inner cavity of the duct shell, and the ion deflecting
Position of the device between the anode portion and the cathode portion, for changing the direction of ion jet flow.
It optionally, further comprise at least one ion accelerator, the ion accelerator is logical set on the air-flow
In the road or inner cavity of the duct shell, and position of the ion accelerator between the anode portion and the cathode portion
It sets, for accelerating the electrification Nitrogen ion after ionizing.
Optionally, the anode portion includes positive electrode bracket and is set on the positive electrode bracket close to the cathode portion one
The positive electrode of side；The cathode portion includes negative electrode bracket and the close anode portion side on the negative electrode bracket
Negative electrode, the positive electrode and the negative electrode are symmetrically set.
Optionally, the ion deflecting device and the ion accelerator include coil.
Optionally, the ion accelerator further include: first annular magnetic core, the axis of the first annular magnetic core and institute
The axis for stating duct shell is located along the same line；
The coil of the ion accelerator is wound on the first annular magnetic core along the circumferential direction of the first annular magnetic core
On.
Optionally, the ion deflecting device further include: the second toroidal core, the axis of second toroidal core and institute
The axis for stating duct shell is located along the same line；
The ion deflecting device includes at least two pairs of coils, and the coil of the ion deflecting device is along second ring
The axial direction of shape magnetic core is wound on second toroidal core.
It optionally, further comprise being mentioned for the anode portion, cathode portion, ion accelerator and the ion deflecting device
For the power supply module of the energy.
Optionally, the coil is graphene wire.
It optionally, further comprise axial centerline set on the duct shell for accommodating the power supply module
Class shuttle shape central axis.
Optionally, the ion deflecting device and the ion accelerator are two or more；Wherein,
Axially stacked setting or interval setting of two or more ion deflecting devices along the duct shell；
Axially stacked setting or interval setting of two or more ion accelerators along the duct shell.
Relatively above-mentioned background technique, Ducted propeller provided by the utility model have the advantages that
The Ducted propeller, as power, is simplified structure, eliminates traditional Ducted propeller using air ion
The fan part of driving motor and rotation accordingly eliminates the pneumatic deflection rudder face of control duct thrust direction, rudder face servo is driven
The compound movements structural member such as motivation structure and vector spout, reduces costs, and can reduce the quality of Ducted propeller, improves
Efficiency.
There is no rotational motion mechanism in the inside of duct, the matching problem not being related between each components reduces zero
The requirement of the part accuracy of manufacture not will lead to the blade abjection of fatigue fracture or fly out outside duct, to avoid generating dangerous.
There is no rotational motion mechanism in the inside of duct, entire Ducted propeller will not be generated because of the rotation of blade and be made an uproar
Sound can accelerate air-flow by adjusting electric current, more stable to the control of speed.
It can be realized that lift is controllable, and direction is adjustable by the electric current of control coil, coil, which is powered, generates the mode ratio of the energy
It is relatively reliable, it not will receive the influence of wind, rain, snowy day gas, and components are less, it is not easy to fail, extend Ducted propeller
Service life.
The coil is made using light material, such as graphene wire, quality is smaller, further makes the entire duct
The quality of propeller is smaller.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of Ducted propeller provided by a kind of specific embodiment of the utility model；
Fig. 2 is the structural representation of another angle of Ducted propeller provided by a kind of specific embodiment of the utility model
Figure；
Fig. 3 is the integrally-built cross-sectional view of Ducted propeller provided by a kind of specific embodiment of the utility model；
Fig. 4 is that positive electrode provided by a kind of specific embodiment of the utility model is distributed on the positive electrode bracket
Partial structural diagram；
Fig. 5 is the electrostatic field schematic diagram that positive and negative electrode provided by a kind of specific embodiment of the utility model is formed；
Fig. 6 is the perspective view of ion accelerator provided by a kind of specific embodiment of the utility model；
Fig. 7 is ion accelerator provided by a kind of specific embodiment of the utility model along the first annular magnetic core
Middle axial plane section on the magnetic field schematic diagram that is formed；
Fig. 8 is ion accelerator shape in entire three-dimensional space provided by a kind of specific embodiment of the utility model
At magnetic field schematic diagram；
Fig. 9 is ion accelerator provided by a kind of specific embodiment of the utility model along the first annular magnetic core
Middle axial plane section on the schematic diagram that is superimposed with the electrostatic field that upper and lower positive and negative electrode is formed of the magnetic field that is formed；
Figure 10 is the perspective view of ion deflecting device provided by a kind of specific embodiment of the utility model；
Figure 11 is one pair of them deflection coil provided by a kind of specific embodiment of the utility model along perpendicular to described
The magnetic field schematic diagram formed on the section of the central axes of duct shell；
Figure 12 is ion deflecting device provided by a kind of specific embodiment of the utility model in entire three-dimensional space
The magnetic field schematic diagram of formation；
Figure 13 is one pair of them deflection coil provided by a kind of specific embodiment of the utility model and positive negative electricity up and down
The schematic diagram for the electrostatic field superposition that pole is formed.
In figure,
1- duct shell；2- anode portion；21- positive electrode bracket；22- positive electricity pole unit；3- cathode portion；31- negative electrode branch
Frame；32- negative electricity pole unit；4- ion accelerator；41- accelerating coil；5- ion deflecting device；51- deflection coil；52-
Second ring magnetic core；6- central axis；The front 7- radome fairing；The rear portion 8- fiaring cone.
Specific embodiment
The embodiments of the present invention are described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, it is intended to for explaining the utility model, and should not be understood as to the utility model
Limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " suitable
The orientation or positional relationship of the instructions such as hour hands ", " counterclockwise " is to be based on the orientation or positional relationship shown in the drawings, merely to just
In description the utility model and simplify description, rather than the device or element of indication or suggestion meaning there must be specific side
Position is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.The meaning of " plurality " is two or two in the description of the present invention,
More than, unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " Gu
It is fixed " etc. terms shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
The core of the utility model is to provide a kind of Ducted propeller, which can be not against the rotation of blade
Power is generated, another method of operation of duct propulsion is provided.
In order to make those skilled in the art better understand the scheme of the utility model, with reference to the accompanying drawing and specific implementation
The utility model is described in further detail for mode.
Fig. 1 to Figure 13 is please referred to, Fig. 1 is the knot of Ducted propeller provided by a kind of specific embodiment of the utility model
Structure schematic diagram；Fig. 2 is that the structure of another angle of Ducted propeller provided by a kind of specific embodiment of the utility model is shown
It is intended to；Fig. 3 is the integrally-built cross-sectional view of Ducted propeller provided by a kind of specific embodiment of the utility model；Fig. 4
The partial structurtes on the positive electrode bracket 21 are distributed in for positive electrode provided by a kind of specific embodiment of the utility model
Schematic diagram；Fig. 5 is the electrostatic field schematic diagram that positive and negative electrode provided by a kind of specific embodiment of the utility model is formed；Fig. 6
For the perspective view of ion accelerator 4 provided by a kind of specific embodiment of the utility model；Fig. 7 is that the utility model is a kind of
The magnetic field that ion accelerator 4 provided by specific embodiment is formed along the section of the middle axial plane of the first annular magnetic core
Schematic diagram；Fig. 8 is the shape in entire three-dimensional space of ion accelerator 4 provided by a kind of specific embodiment of the utility model
At magnetic field schematic diagram；Fig. 9 is ion accelerator 4 provided by a kind of specific embodiment of the utility model along described first
The schematic diagram that the magnetic field formed on the section of the middle axial plane of toroidal core is superimposed with the electrostatic field that upper and lower positive and negative electrode is formed；Figure 10
For the perspective view of ion deflecting device 5 provided by a kind of specific embodiment of the utility model；Figure 11 is the utility model one
One pair of them deflection coil 51 provided by kind specific embodiment is along the section of the central axes perpendicular to the duct shell 1
The magnetic field schematic diagram of formation；Figure 12 is ion deflecting device 5 provided by a kind of specific embodiment of the utility model entire
The magnetic field schematic diagram formed in three-dimensional space；Figure 13 is that one pair of them provided by a kind of specific embodiment of the utility model are inclined
The schematic diagram that switch coil 51 is superimposed with the electrostatic field that upper and lower positive and negative electrode is formed.
In a specific embodiment, Ducted propeller provided by the utility model, as depicted in figs. 1 and 2 comprising contain
Road shell 1, anode portion 2, cathode portion 3, ion accelerator 4 and ion deflecting device 5；Wherein, the centre of the duct shell 1
The airflow channel of perforation is surrounded, the anode portion 2 and the cathode portion 3 are respectively arranged on the top and lower part of the airflow channel,
It is used to form electrostatic field；The ion deflecting device 5 is set to the inner cavity lower part of the duct shell 1 and is located at the anode portion 2
And the position between the cathode portion 3, for changing the direction of ion jet flow.The Ducted propeller uses air ion conduct
Power simplifies structure, eliminates the driving motor of traditional Ducted propeller and the fan part of rotation, accordingly eliminates control
The compound movements structural members such as pneumatic deflection rudder face, rudder face servo-actuating device and the vector spout of duct thrust direction, reduce
Cost, and can reduce the quality of Ducted propeller, improve efficiency.There is no rotational motion mechanism in the inside of duct, does not relate to
And the matching problem between each components, the requirement of the components accuracy of manufacture is reduced, not will lead to the blade abjection of fatigue fracture
Or fly out outside duct, to avoid generating dangerous.There is no rotational motion mechanism in the inside of duct, entire Ducted propeller will not
Because the rotation of blade generates noise, air-flow can be accelerated by adjusting electric current, it is more stable to the control of speed.Pass through control
The ion deflecting device can be realized that direction is adjustable, not will receive the influence of wind, rain, snowy day gas, and components are less, no
It is easy failure, extends the service life of Ducted propeller.
Further, the ion accelerator 4 be set to the duct shell 1 inner cavity and be located at the anode portion 2 and
Position between the cathode portion 3, for accelerating the electrification Nitrogen ion after ionizing；Further, ion accelerator 4 is set to institute
The inner cavity top of duct shell 1 is stated, the ion deflecting device 5 is set to the inner cavity lower part of the duct shell 1 and is located at described
Position between ion accelerator 4 and the cathode portion 3, effect are preferable.
In a specific embodiment, shown in Ducted propeller provided by the utility model, as shown in Figure 1, Figure 2, Fig. 3 and Fig. 5,
The positive electricity of the anode portion 2 close 3 side of cathode portion including positive electrode bracket 21 and on the positive electrode bracket 21
Pole；The cathode portion 3 includes negative electrode bracket 31 and the bearing close to 2 side of anode portion on the negative electrode bracket 31
Electrode.The positive electrode bracket 21 and the setting symmetrical above and below of the negative electrode bracket 31, on the positive electrode and the negative electrode
It is lower to be symmetrical arranged.
Further, the positive electrode bracket 21 includes multiple along circumferential equally distributed first spoke of the duct shell 1
Item, and multiple first spokes are the strip structure radially extended along the duct shell 1；The positive electrode includes multiple
Positive electricity pole unit 22, multiple positive electricity pole units 22 are uniformly arranged on first spoke close to the one of the cathode portion 3
Side.The negative electrode bracket 31 includes multiple along circumferential equally distributed second spoke of the duct shell 1, and multiple described the
Two spokes are the strip structure radially extended along the duct shell 1；The negative electrode includes multiple negative electricity pole units 32, more
A negative electricity pole unit 32 is uniformly arranged on the side on second spoke close to the anode portion 2.It should be noted that institute
It states positive electrode bracket 21 and the negative electrode bracket 31 is not limited to the structure type of spoke, the positive electrode bracket 21 and described
Negative electrode bracket 31 may also be configured to network or other can be realized installs the positive electrode and the negative electrode function
Support configurations, but the material of the positive and negative electrode bracket, structure are basic with the electrostatic field for not influencing positive and negative electrode formation
It is required that for example, the positive and negative electrode bracket is that insulating materials is made, it is preferred to use plastic material, it is highly preferred that the plastic cement
Material is polyformaldehyde.
As shown in figure 5, using the electrode unit being distributed in groups, it will be in the air in the positive portion 2 on top close in duct
Nitrogen molecular ionization, the electronics in nitrogen molecular are captured by high pressure positive electrode, positively charged Nitrogen ion can in duct positive negative electricity up and down
Under the electrostatic field formed between pole, into duct, the negative electricity polar motion of the positive and negative electrode of close lower part, Nitrogen ion are being moved
Colliding other nitrogen moleculars in the process will form new Nitrogen ion, thus constantly have Nitrogen ion from the positive electrode of duct internal upper part to culvert
The negative electricity polar motion of road lower part.Simultaneously because the principle of continuity of fluid, the air outside duct can be constantly inhaled into duct
Portion participates in new ionization, and under the action of positive and negative electrode, from the negative electrode persistent movement of the positive electrode on top to the lower part.
As shown in Figure 3 and Figure 6, the ion accelerator 4 be along the inner cavity of the duct shell 1 circumferentially around annular
Device.Further, the ion accelerator 4 includes: first annular magnetic core, the axis of the first annular magnetic core with it is described
The axis of duct shell 1 is located along the same line；And coil, the coil of the ion accelerator 4 is accelerating coil 41, described
Accelerating coil 41 is wound on the first annular magnetic core along the circumferential direction of the duct shell 1.According to faraday's electromagnetism sense
Principle is answered, it is as shown in Figure 7, Figure 8 and Figure 9, positive and negative up and down in the magnetic direction and duct that the accelerating coil 41 generates after being powered
The electrostatic field direction that electrode generates is identical, thus the magnetic fields for generating the Nitrogen ion after being ionized in the accelerating coil 41
It is lower accelerated.By changing the size of current in the accelerating coil 41, the field strength for accelerating magnetic field can be adjusted, to change
Accelerate the intensity of Nitrogen ion injection stream in magnetic field.In the specific implementation, the ion accelerator 4 can be set to one,
Can be set to it is two or more, when the ion accelerator 4 be it is two or more when, two or more ion accelerations
Device 4, specifically can be according to the quiet of the entire Ducted propeller along the axially stacked setting or interval setting of the duct shell 1
Electric field strength and demand setting.
As shown in figs. 3 and 10, the ion deflecting device 5 be along the inner cavity of the duct shell 1 circumferentially around ring
Shape dress is set.Further, the ion deflecting device 5 includes: the second toroidal core 52, the axis of second toroidal core 52
It is located along the same line with the axis of the duct shell 1；And two pairs of coils, the coil of the ion deflecting device 5 are deflection
Coil 51, the deflection coil 51 are wound on second toroidal core 52 along the axial direction of second toroidal core 52, and
Two pairs of deflection coils 51 are uniformly distributed along the circumferential direction of second toroidal core 52.According to faraday electromagnetic induction principle,
As shown in Figure 11, Figure 12 and Figure 13, upper and lower positive and negative electrode in the magnetic direction and duct that the deflection coil 51 generates after being powered
Vertically, therefore, Nitrogen ion injection stream passes through institute to the electrostatic field (i.e. the direction of motion of the Nitrogen ion in duct) of generation in duct
Behind the magnetic field for stating deflection coil 51, direction will be changed because of the active force by magnetic deflection field, by adjusting two pairs of deflection coils 51
In electric current size and Orientation, the size and Orientation of entire magnetic deflection field can be adjusted, sprayed to adjust in duct Nitrogen ion
The posture adjustment of duct and the change of the direction of motion to realize vectored thrust control, namely are realized in the direction of jet stream.It is being embodied
When, the ion deflecting device 5 can be set to one, may be set to be multiple.It should be noted that the ion deflecting dress
When setting 5 as one, the deflection coil 51 on second toroidal core 52 is at least two pairs, the deflection coil 51 be two pairs with
When upper, the deflection coil 51 is uniformly distributed along the circumferential direction of second toroidal core 52.When the ion deflecting device 5 is two
When a or multiple, deflection coil 51 on each second toroidal core 52 can for it is a pair of, two pairs or more, and two
Axially stacked setting or interval setting of a or multiple ion deflecting devices 5 along the duct shell 1.
In a specific embodiment, Ducted propeller provided by the utility model, the accelerating coil 41 and it is described partially
The preferred light material of the material of switch coil 51, such as using the conducting wire of nano material, quality is smaller, to further decrease entire institute
The quality of Ducted propeller is stated, further, the nano material is preferably grapheme material.
As shown in Figure 3 and Figure 5, the Ducted propeller further comprises for the anode portion 2, cathode portion 3, ion acceleration
Device 4 and the ion deflecting device 5 provide the power supply module of the energy, are equipped with outside the power supply module for accommodating the electricity
The central axis 6 of the class shuttle shape of source component, the central axis 6 is further set to the axial centerline of the duct shell 1, described
The upper end of central axis 6 is equipped with front radome fairing 7, and lower end is equipped with rear portion fiaring cone 8.
Ducted propeller provided by the utility model is described in detail above.Specific case used herein
The principles of the present invention and embodiment are expounded, the above embodiments are only used to help understand, and this is practical
Novel method and its core concept.It should be pointed out that for those skilled in the art, not departing from this reality
Under the premise of with new principle, several improvements and modifications can be made to this utility model, these improvement and modification are also fallen into
In the protection scope of the utility model claims.
Claims (10)
1. a kind of Ducted propeller, it is characterised in that: including duct shell, anode portion, cathode portion and at least one ion deflecting
Device；Wherein, the centre of the duct shell surrounds the airflow channel of perforation,
The anode portion and the cathode portion are not set to the top and lower part of the airflow channel, are used to form electrostatic field；
The ion deflecting device is set in the airflow channel or the inner cavity of the duct shell, and the ion deflecting device
Position between the anode portion and the cathode portion, for changing the direction of ion jet flow.
2. Ducted propeller as described in claim 1, it is characterised in that: it further comprise at least one ion accelerator,
The ion accelerator is set in the airflow channel or the inner cavity of the duct shell, and the ion accelerator is located at
Position between the anode portion and the cathode portion, for accelerating the electrification Nitrogen ion after ionizing.
3. Ducted propeller as described in claim 1, it is characterised in that:
The anode portion include positive electrode bracket and on the positive electrode bracket close to cathode portion side positive electrode；
The cathode portion include negative electrode bracket and on the negative electrode bracket close to anode portion side negative electrode, it is described
Positive electrode and the negative electrode are symmetrically set.
4. Ducted propeller as claimed in claim 2, it is characterised in that: the ion deflecting device and ion acceleration dress
Setting includes coil.
5. Ducted propeller as claimed in claim 4, it is characterised in that: the ion accelerator further include: first annular
Magnetic core, the axis of the first annular magnetic core and the axis of the duct shell are located along the same line；
The coil of the ion accelerator is wound on the first annular magnetic core along the circumferential direction of the first annular magnetic core.
6. Ducted propeller as claimed in claim 4, it is characterised in that: the ion deflecting device further include: the second annular
Magnetic core, the axis of second toroidal core and the axis of the duct shell are located along the same line；
The ion deflecting device includes at least two pairs of coils, and the coil of the ion deflecting device is along second annular magnetic
The axial direction of core is wound on second toroidal core.
7. Ducted propeller as claimed in claim 2, it is characterised in that: further comprise for the anode portion, cathode portion, from
Sub- accelerator and the ion deflecting device provide the power supply module of the energy.
8. Ducted propeller as claimed in claim 4, it is characterised in that: the coil is graphene wire.
9. Ducted propeller as claimed in claim 7, it is characterised in that: further comprise set on the center of the duct shell
The central axis of the class shuttle shape for accommodating the power supply module of axial location.
10. Ducted propeller as claimed in claim 2, it is characterised in that: the ion deflecting device and the ion acceleration
Device is two or more；Wherein,
Axially stacked setting or interval setting of two or more ion deflecting devices along the duct shell；
Axially stacked setting or interval setting of two or more ion accelerators along the duct shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920033727.8U CN209366480U (en) | 2019-01-09 | 2019-01-09 | A kind of Ducted propeller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920033727.8U CN209366480U (en) | 2019-01-09 | 2019-01-09 | A kind of Ducted propeller |
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| CN209366480U true CN209366480U (en) | 2019-09-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109533350A (en) * | 2019-01-09 | 2019-03-29 | 酷黑科技（北京）有限公司 | A kind of Ducted propeller |
| IT202100015986A1 (en) | 2021-06-18 | 2022-12-18 | Emidio Laureti | Electromagnetic propulsion system for the movement of space vehicles without the emission of reaction mass. |
-
2019
- 2019-01-09 CN CN201920033727.8U patent/CN209366480U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109533350A (en) * | 2019-01-09 | 2019-03-29 | 酷黑科技（北京）有限公司 | A kind of Ducted propeller |
| CN109533350B (en) * | 2019-01-09 | 2024-06-11 | 酷黑科技（北京）有限公司 | Duct propeller |
| IT202100015986A1 (en) | 2021-06-18 | 2022-12-18 | Emidio Laureti | Electromagnetic propulsion system for the movement of space vehicles without the emission of reaction mass. |
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