CN209192204U - Propeller and unmanned plane - Google Patents
Propeller and unmanned plane Download PDFInfo
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- CN209192204U CN209192204U CN201821908789.0U CN201821908789U CN209192204U CN 209192204 U CN209192204 U CN 209192204U CN 201821908789 U CN201821908789 U CN 201821908789U CN 209192204 U CN209192204 U CN 209192204U
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Abstract
The utility model relates to air vehicle technique fields, more particularly, to a kind of propeller and unmanned plane.The propeller includes at least two blades of pulp hub with the outer surface for being connected to pulp hub, and blade includes wave-shaped front edge；The windward edge of blade, the intersection smooth transition of the upper and lower surfaces of wave-shaped front edge is arranged in wave-shaped front edge；The leeward edge of blade is in smooth setting.The unmanned plane includes the propeller.The propeller and the unmanned plane, by the windward edge in blade, wave-shaped front edge is set, generate the effect of approximate vortex generator, it can be improved the maximum lift of propeller, and reduce the air drag of propeller rotational, the burden for thereby reducing the power device of unmanned plane improves the drive efficiency of the power device of unmanned plane, is conducive to saving fuel oil etc..
Description
Technical field
The utility model relates to air vehicle technique fields, more particularly, to a kind of propeller and unmanned plane.
Background technique
Unmanned air vehicle technique is constantly progressive, and by the concern and favor in each field, application field is also more extensive.The relevant technologies
In unmanned plane propeller be mainly flat profile, the leading edge and rear of blade continue to use this based on straight line or single camber line
Kind blade leading edge structure brings difficulty, the especially reduction to the lift promotion and resistance of propeller to the performance boost of propeller
Form challenge.
It would therefore be highly desirable to propose a kind of blade leading edge structure of new propeller, to increase the lift of propeller, reduce spiral
The resistance of paddle.
Utility model content
The first aspect of the utility model is designed to provide propeller.
The second aspect of the utility model is designed to provide unmanned plane.
The propeller that the first aspect of the utility model provides is used for unmanned plane, comprising:
At least two blades of pulp hub and the outer surface for being connected to the pulp hub, the blade includes wave-shaped front edge；
The windward edge of the blade, the upper and lower surfaces of the wave-shaped front edge are arranged in the wave-shaped front edge
Intersection smooth transition；
The leeward edge of the blade is in smooth setting.
Further, the chamfered shape of the wave-shaped front edge is sine curve.
Further, the sinusoidal wavelength is T, and the sinusoidal amplitude is A；
Wherein, the wavelength T is definite value, and the amplitude is definite value；Alternatively,
Along the blade exhibition to, the direction of the slurry point from the pulp hub to the blade, the wavelength T is gradually reduced,
The amplitude A is gradually reduced.
Further, the maximum span-wise length of the blade is L, and the wavelength T is the maximum span-wise length L of the blade
5%~10%.
Further, the wavelength T=5%L.
Further, the tangential maximum length of the blade is D, and the amplitude A is the tangential maximum length D of the blade
5%~10%.
Further, the amplitude A=7%D.
Further, the angle between the upper surface and lower surface of the blade at the sinusoidal wave crest is
One angle, the angle between the upper surface and lower surface of the blade at the sinusoidal trough are the second angle；
First angle is less than second angle.
Further, the quantity of the blade is two, and the angle between two blades along the pulp hub circumferential direction is
180°。
The unmanned plane that the second aspect of the utility model provides, described in any technical solution provided including first aspect
Propeller；
Main body；
Multiple rotors, setting on the body, and are uniformly distributed along the circumferential direction of the main body；
The propeller is rotatably arranged on the rotor.
Propeller provided by the utility model, at least two blades including pulp hub He the outer surface for being connected to pulp hub, paddle
Leaf includes wave-shaped front edge, and the windward edge of blade is arranged in wave-shaped front edge, and wave is arranged by the windward edge in blade
Shape leading edge can be wanted to contact, no with air-flow at the leading edge locus of blade when blade is in contact with air-flow from multiple directions
Positive vortex can be only generated, so-called positive vortex pushes propeller to rotate forward and provide the whirlpool of lift for propeller immediately
Stream, and can generate reversed vortex, and reversed vortex and can make positive vortex enhancing, also with positive vortex interaction
It is the effect for making the wave-shaped front edge of blade generate approximate vortex generator, can be improved the maximum lift of propeller, and reduce
The air drag of propeller rotational thereby reduces the burden of the power device of unmanned plane, improves the power device of unmanned plane
Drive efficiency, be conducive to saving fuel oil etc..In addition, wave-shaped front edge has can provide comb circulation road, Jin Eryou for air-flow
Conducive to the generation for inhibiting aerodynamic noise, has the function of damping noise reduction.The leeward edge of blade reduces spiral in smooth setting
The moulding process difficulty of paddle, thereby reduces the forming cost of propeller.In addition, the propeller only pass through change blade it is up-front
Style characteristic just solves the technical problem that propeller lift in the related technology is insufficient, resistance is larger, does not increase additional dress
It sets, does not only therefore generate additional energy consumption, have also achieved energy-efficient effect.
Unmanned plane provided by the utility model, including propeller, main body and multiple rotors, propeller pass through meeting in blade
Wave-shaped front edge is arranged in wind edge, can be at the leading edge locus of blade and air-flow is from multiple when blade is in contact with air-flow
Direction is in contact, and can not only generate positive vortex, promotion propeller rotates forward and is propeller so-called positive vortex immediately
The vortex of lift is provided, and reversed vortex can be generated, reversed vortex and can make positive whirlpool with positive vortex interaction
Stream enhancing, that is, the effect for making the wave-shaped front edge of blade generate approximate vortex generator, can be improved the maximum of propeller
Lift, and reduce the air drag of propeller rotational.Multiple rotor settings are uniformly distributed in main body, and along the circumferential direction of main body,
Propeller is rotatably arranged on rotor, thus the propeller collective effect on multiple rotors, to drive unmanned plane during flying, from
And the lift and flight resistance of unmanned plane during flying are improved, the burden of the power device of unmanned plane is thereby reduced, nothing is improved
The drive efficiency of man-machine power device is conducive to energy saving etc..In addition, it can be gas that the wave-shaped front edge of unmanned plane, which has,
Stream provides comb circulation road, and then is conducive to inhibit the generation of aerodynamic noise, has the function of damping noise reduction.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the first structure diagram for the propeller that the utility model embodiment one provides；
Fig. 2 is the second structural schematic diagram of the propeller that the utility model embodiment one provides；
Fig. 3 is sectional view of the propeller at B in Fig. 2；
Fig. 4 is sectional view of the propeller at C in Fig. 2；
Fig. 5 is the third structural schematic diagram for the propeller that the utility model embodiment one provides.
Icon: 1- pulp hub；2- blade；20- wave-shaped front edge；The upper surface 21-；The lower surface 22-.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Embodiment one
Referring to shown in Fig. 1-Fig. 5, a kind of propeller is present embodiments provided；Fig. 1 is propeller provided in this embodiment
Axonometric drawing, Fig. 2 are a structural schematic diagram of propeller provided in this embodiment, show a kind of wave-shaped front edge；Fig. 3 is Fig. 2
In sectional view of the propeller at B；Fig. 4 is sectional view of the propeller at C in Fig. 2；Fig. 5 is spiral shell provided in this embodiment
The another structural schematic diagram for revolving paddle, shows another wave-shaped front edge.
Propeller provided in this embodiment is used for unmanned plane.
Referring to shown in Fig. 1-Fig. 5, propeller provided in this embodiment, comprising:
At least two blades of pulp hub and the outer surface for being connected to pulp hub；
At least two blades are uniformly distributed along the circumferential direction of pulp hub, i.e., the angle between every two adjacent blade is equal, nothing
Man-machine power device is drivingly connected pulp hub, and then drives blade rotation；
Optionally, along the direction of pulp hub to blade, blade includes sequentially connected blade root, mid blade and slurry point, blade root
With reliable strength and stiffness；Along the tangential of blade, slurry point is arc-shaped.
Blade includes wave-shaped front edge, and the windward edge of blade is arranged in wave-shaped front edge, passes through the windward side in blade
Wave-shaped front edge is arranged in edge, can be at the leading edge locus of blade, with air-flow from multiple directions when blade is in contact with air-flow
Want to contact, positive vortex can not only be generated, so-called positive vortex pushes propeller to rotate forward and provide for propeller immediately
The vortex of lift, and can generate reversed vortex, reversed vortex and can be such that positive vortex increases with positive vortex interaction
By force, that is, the wave-shaped front edge of blade is made to generate the effect of approximate vortex generator, can be improved the maximum lift of propeller,
And reduce the air drag of propeller rotational, the burden of the power device of unmanned plane is thereby reduced, the dynamic of unmanned plane is improved
The drive efficiency of power device is conducive to saving fuel oil etc..In addition, wave-shaped front edge has can provide comb circulation road for air-flow,
And then be conducive to inhibit the generation of aerodynamic noise, have the function of damping noise reduction.
Optionally, the leading edge of mid blade is arranged in wave-shaped front edge, to can not only guarantee the power of blade root and slurry point
Learn performance, additionally it is possible to realize and above-mentioned beneficial effect is realized by setting wave-shaped front edge.
The intersection of the upper and lower surfaces of wave-shaped front edge seamlessly transits, so that the leading edge of the aerofoil profile of blade is in
Round and smooth shape, so-called aerofoil profile be blade along its tangential section shape, thereby reduces the wave-shaped front edge and air-flow of blade
Frictional resistance is conducive to the lift for promoting propeller, while advantageously reducing the rotary resistance of propeller.
The leeward edge of blade is in smooth setting along the spanwise direction of blade in smooth setting, the i.e. leeward edge of blade,
The windward edge of blade is arranged to wave-shaped front edge, it is not necessary that leeward edge is also provided with waviness, reduces propeller
Moulding process difficulty thereby reduces the forming cost of propeller.
Propeller in the present embodiment, at least two blades including pulp hub He the outer surface for being connected to pulp hub, blade packet
Wave-shaped front edge is included, the windward edge of blade is arranged in wave-shaped front edge, by before waveform is arranged in the windward edge of blade
Edge can be in contact with air-flow from multiple directions when blade is in contact with air-flow at the leading edge locus of blade, can not only
Positive vortex is generated, so-called positive vortex pushes propeller to rotate forward and provide the vortex of lift for propeller immediately, and
Reversed vortex can be generated, reversed vortex and can make positive vortex enhancing, that is, make blade with positive vortex interaction
Wave-shaped front edge generate the effect of approximate vortex generator, can be improved the maximum lift of propeller, and reduce propeller and turn
Dynamic air drag thereby reduces the burden of the power device of unmanned plane, improves the driving effect of the power device of unmanned plane
Rate is conducive to energy saving etc..In addition, wave-shaped front edge has can provide comb circulation road for air-flow, and then be conducive to inhibit
The generation of aerodynamic noise, has the function of damping noise reduction.The leeward edge of blade reduces the molding of propeller in smooth setting
Technology difficulty thereby reduces the forming cost of propeller.In addition, the propeller, which only passes through, changes the up-front shape spy of blade
Property, it just solves the technical problem that propeller lift in the related technology is insufficient, resistance is larger, does not increase attachment device, no
Additional energy consumption therefore only is not generated, has also achieved energy-efficient effect.
In the optinal plan of the present embodiment, the chamfered shape of wave-shaped front edge is sine curve.
Optionally, the chamfered shape of wave-shaped front edge can also be cosine curve, and the present embodiment is with by wave-shaped front edge
Chamfered shape is sinusoidal scheme to be illustrated, it is to be understood that is arranged when by the chamfered shape of wave-shaped front edge
When for sine curve, all technical solutions provided in this embodiment are still applicable in.
In the optinal plan of the present embodiment, sinusoidal wavelength is T, and sinusoidal amplitude is A；
Wherein, sinusoidal wavelength is the spanwise direction between sinusoidal every two adjacent wave crests along blade
Distance, sinusoidal amplitude are size of the sinusoidal wave crest in the chordwise direction of blade.
Wherein, as shown in Fig. 2, wavelength T is definite value, amplitude A is definite value, and wavelength T and amplitude A are arranged to definite value, this
When, which is known as quasi sine shape leading edge.Quasi sine shape leading edge, which is arranged, can not only guarantee making for wave-shaped front edge
With performance, and it is easy to through automation means machine-shaping propeller；Alternatively,
As shown in figure 5, along blade exhibition to the direction of the slurry point from pulp hub to blade, wavelength T is gradually reduced, amplitude A
It is gradually reduced, at this point, the wave-shaped front edge is known as nearly sinusoidal leading edge.Before point s1 in Fig. 2 and point s2 is nearly sinusoidal
Point on edge, distance of the point s1 than point s2 apart from pulp hub is closer, and the amplitude in period locating for point s1 is that A1 (does not show in figure
Out), wavelength is T1 (not shown), and the amplitude in period locating for point s2 is A2 (not shown), wavelength for T2 (in figure not
Show), A1 is greater than or equal to A2, and T1 is greater than or equal to A2.The angle of attack at the s2 of its midpoint is smaller, is correspondingly arranged its locating period
Amplitude A 2 and wavelength T2 are smaller, can be to avoid the negative angle of attack of appearance at the position s2, and then avoid the occurrence of downward lift, in turn
It can guarantee the effect that propeller promotes lift, reduces resistance.
In the optinal plan of the present embodiment, the maximum span-wise length of blade is L, and wavelength T is the maximum span-wise length L of blade
5%~10%.For example, wavelength T is 5%, 5.5%, 6%, 8.5% or 10% etc. of the maximum span-wise length L of blade.
The slurry point of usual blade is arc-shaped, so blade is not definite value at a distance from pulp hub junction to slurry point, wherein
The maximum distance of blade and pulp hub junction to slurry point is the maximum span-wise length of blade.Wavelength T is limited to blade most
The 5%~10% of big span-wise length L, it is, when wavelength T is definite value, 5%L≤T≤10%L；When the exhibition along blade to,
The direction of slurry point from pulp hub to blade, when wavelength T is gradually reduced, the maximum value of wavelength T, which meets, is greater than or equal to 5%L and small
In or be equal to 10%L, so as to have to both embodiments and wavelength T according to specific process conditions and performance requirement
The numberical range of body is selected, and has reasonability and practicability.
In the optinal plan of the present embodiment, wavelength T=5%L.
In the optinal plan of the present embodiment, the tangential maximum length of blade is D, and amplitude A is the tangential maximum length D of blade
5%~10%.For example, amplitude A is 5%, 5.5%, 6%, 8.5% or 10% etc. of the tangential maximum length D of blade.
The tangential length of blade is not usually definite value, and the tangential maximum length of blade is D, and amplitude A is limited to blade
The tangential span of the 5%~10% of maximum span-wise length D, blade be that is, when amplitude A is definite value, 5%D≤A≤
10%D；When the exhibition along blade is to the direction of the slurry point from pulp hub to blade, amplitude A is gradually reduced, and the maximum value of amplitude A meets
More than or equal to 5%D and it is less than or equal to 10%D, so as to according to specific process conditions and performance requirement, to both
Embodiment and the specific numberical range of amplitude A are selected, and have reasonability and practicability.
In the optinal plan of the present embodiment, amplitude A=7%D.
In the optinal plan of the present embodiment, as shown in figure 3, in sinusoidal wave between the upper surface and lower surface of blade
Angle at peak is the first angle M1, as shown in figure 4, between the upper surface and lower surface of blade at sinusoidal trough
Angle is the second angle M2；First angle M1 is less than the second angle M2.
By limiting the first angle M1 less than the second angle M2, exhibition along blade on the one hand can be guaranteed to the upper of, blade
Surface and lower surface are capable of forming smooth transition at wave-shaped front edge, reduce the frictional force of air-flow and wave-shaped front edge；It is another
Aspect, the first angle M1 can guarantee that the upper and lower surfaces of the middle and back of blade are smooth, thus shape less than the second angle M2
It is not in fold at smooth aerofoil profile, so as to guarantee the hydrodynamic performance of blade.
In the optinal plan of the present embodiment, the quantity of blade is two, and the angle between two blades along pulp hub circumferential direction is
180°。
When the quantity of blade is two, the angle between two blades along pulp hub circumferential direction is 180 °, specifically, works as paddle
The quantity of leaf is two, and the angle between two blades is the straight angle, when the quantity of blade is three, every two adjacent blade it
Between angle be 120 °, when the quantity of blade is four, the angle between every two adjacent blade is 90 °, so as to protect
It demonstrate,proves propeller and provides stable lift for unmanned plane.
Embodiment two
Embodiment two provides a kind of unmanned plane, which includes the propeller in embodiment one, and one institute of embodiment is public
The technical characteristic for the propeller opened is also applied for the embodiment, and the technical characteristic of the published propeller of embodiment one is not repeated
Description.
Unmanned plane provided in this embodiment, the propeller including embodiment one kind；
Main body；
Multiple rotors, setting are uniformly distributed in main body, and along the circumferential direction of main body；
Propeller is rotatably arranged on rotor.
Unmanned plane in the present embodiment, including propeller, main body and multiple rotors, propeller pass through the windward side in blade
Wave-shaped front edge is arranged in edge, can be at the leading edge locus of blade and air-flow is from multiple directions when blade is in contact with air-flow
It is in contact, positive vortex can not only be generated, so-called positive vortex pushes propeller to rotate forward and provide for propeller immediately
The vortex of lift, and can generate reversed vortex, reversed vortex and can be such that positive vortex increases with positive vortex interaction
By force, that is, the wave-shaped front edge of blade is made to generate the effect of approximate vortex generator, can be improved the maximum lift of propeller,
And reduce the air drag of propeller rotational.Multiple rotor settings are uniformly distributed in main body, and along the circumferential direction of main body, propeller
It is rotatably arranged on rotor, thus the propeller collective effect on multiple rotors, to drive unmanned plane during flying, to improve
The lift and flight resistance of unmanned plane during flying, thereby reduces the burden of the power device of unmanned plane, improves unmanned plane
The drive efficiency of power device is conducive to energy saving etc..In addition, the wave-shaped front edge of unmanned plane, which has, to be provided for air-flow
Circulation road is combed, and then is conducive to inhibit the generation of aerodynamic noise, has the function of damping noise reduction.
Unmanned plane in the present embodiment has the advantages that the propeller in embodiment one, propeller disclosed in embodiment one
The advantages of be not repeated to describe herein.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.In addition, it will be appreciated by those of skill in the art that although some implementations described herein
Example includes certain features included in other embodiments rather than other feature, but the group of the feature of different embodiments is desirable
Taste within the scope of the utility model and form different embodiments.For example, in claims above, institute
Claimed embodiment it is one of any can in any combination mode come using.It is disclosed in the background technology part
Information is merely intended to deepen the understanding to the general background technology of the utility model, and is not construed as recognizing or with any shape
Formula implies that the information constitutes the prior art known to those skilled in the art.
Claims (10)
1. a kind of propeller is used for unmanned plane characterized by comprising
At least two blades of pulp hub and the outer surface for being connected to the pulp hub, the blade includes wave-shaped front edge；
The windward edge of the blade, the phase of the upper and lower surfaces of the wave-shaped front edge is arranged in the wave-shaped front edge
It is seamlessly transitted at friendship；
The leeward edge of the blade is in smooth setting.
2. propeller according to claim 1, which is characterized in that
The chamfered shape of the wave-shaped front edge is sine curve.
3. propeller according to claim 2, which is characterized in that
The sinusoidal wavelength is T, and the sinusoidal amplitude is A；
Wherein, the wavelength T is definite value, and the amplitude A is definite value；Alternatively, along the blade exhibition to from the pulp hub to institute
The direction of the slurry point of blade is stated, the wavelength T is gradually reduced, and the amplitude A is gradually reduced.
4. propeller according to claim 3, which is characterized in that
The maximum span-wise length of the blade is L, and the wavelength T is the 5%~10% of the maximum span-wise length L of the blade.
5. propeller according to claim 4, which is characterized in that
The wavelength T=5%L.
6. propeller according to claim 3 or 4, which is characterized in that
The tangential maximum length of the blade is D, and the amplitude A is the 5%~10% of the tangential maximum length D of the blade.
7. propeller according to claim 6, which is characterized in that
Amplitude A=the 7%D.
8. propeller according to claim 2 or 3, which is characterized in that
Angle between the upper surface and lower surface of the blade at the sinusoidal wave crest is the first angle, the paddle
Angle between the upper surface and lower surface of leaf at the sinusoidal trough is the second angle；
First angle is less than second angle.
9. propeller according to claim 1, which is characterized in that
The quantity of the blade is two, and the angle between two blades along the pulp hub circumferential direction is 180 °.
10. a kind of unmanned plane, which is characterized in that including propeller as claimed in any one of claims 1-9 wherein；
Main body；
Multiple rotors, setting on the body, and are uniformly distributed along the circumferential direction of the main body；
The propeller is rotatably arranged on the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821908789.0U CN209192204U (en) | 2018-11-20 | 2018-11-20 | Propeller and unmanned plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821908789.0U CN209192204U (en) | 2018-11-20 | 2018-11-20 | Propeller and unmanned plane |
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| Publication Number | Publication Date |
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| CN209192204U true CN209192204U (en) | 2019-08-02 |
Family
ID=67424965
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| CN201821908789.0U Active CN209192204U (en) | 2018-11-20 | 2018-11-20 | Propeller and unmanned plane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2579137A (en) * | 2018-10-18 | 2020-06-10 | Safran Aircraft Engines | Profiled structure for an aircraft or turbomachine for an aircraft |
| WO2023124378A1 (en) * | 2021-12-29 | 2023-07-06 | 北京三快在线科技有限公司 | Propeller and aircraft |
-
2018
- 2018-11-20 CN CN201821908789.0U patent/CN209192204U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2579137A (en) * | 2018-10-18 | 2020-06-10 | Safran Aircraft Engines | Profiled structure for an aircraft or turbomachine for an aircraft |
| GB2579137B (en) * | 2018-10-18 | 2022-10-19 | Safran Aircraft Engines | Profiled structure for an aircraft or turbomachine for an aircraft |
| GB2606681A (en) * | 2018-10-18 | 2022-11-16 | Safran Aircraft Engines | Profiled structure for an aircraft or turbomachine for an aircraft |
| US11560796B2 (en) | 2018-10-18 | 2023-01-24 | Safran Aircraft Engines | Profiled structure for an aircraft or turbomachine for an aircraft |
| GB2606681B (en) * | 2018-10-18 | 2023-08-02 | Safran Aircraft Engines | Profiled structure for an aircraft or turbomachine for an aircraft |
| US11732588B2 (en) | 2018-10-18 | 2023-08-22 | Safran Aircraft Engines | Profiled structure for an aircraft or turbomachine for an aircraft |
| WO2023124378A1 (en) * | 2021-12-29 | 2023-07-06 | 北京三快在线科技有限公司 | Propeller and aircraft |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 76-45, Shenbei Road, Shenbei New District, Shenyang City, Liaoning Province 110000 Patentee after: Liaoning Dazhuang UAV Technology Co.,Ltd. Address before: No.76-43, Shenbei Road, Shenbei New District, Shenyang, Liaoning 110000 (gate a) Patentee before: LIAONING ZHUANGLONG UNMANNED AERIAL VEHICLE TECHNOLOGY Co.,Ltd. |