CN102248950A - High-efficiency energy-saving technology for bullet train - Google Patents
High-efficiency energy-saving technology for bullet train Download PDFInfo
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- CN102248950A CN102248950A CN2011101191731A CN201110119173A CN102248950A CN 102248950 A CN102248950 A CN 102248950A CN 2011101191731 A CN2011101191731 A CN 2011101191731A CN 201110119173 A CN201110119173 A CN 201110119173A CN 102248950 A CN102248950 A CN 102248950A
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- turbulent flow
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T30/00—Transportation of goods or passengers via railways, e.g. energy recovery or reducing air resistance
Abstract
The invention provides a high-efficiency energy-saving technology for a bullet train. The high-efficiency energy-saving technology for the bullet train has small resistance and large thrust force, and is technologically characterized in that: the front end resistance surfaces of various express trains, bullet trains and the like are provided with turbulent current recesses, or turbulent current grooves are formed by extending backwards from the turbulent current recesses. The high-efficiency energy-saving technology is characterized in that: the resistance surfaces of the front ends of train heads or train bodies of various express trains and bullet trains are provided with at least one turbulent current recess which is opened upwards; 1, at least one turbulent current groove is formed on the front end resistance surface in an extending manner; 2, at least one turbulent current groove is formed on the front end resistance surface in gradually magnifying manner; 3, at least one step-shaped turbulent current groove is formed on the front end resistance surface in a stepwise extending manner; 4, at least one step-shaped turbulent current groove is formed on the front end resistance surface in a stepwise gradually magnifying manner; and 5, the bottom of the turbulent current groove or the step-shape turbulent current groove is provided with carinate wings which project along the central line of the turbulent current groove close to the center of the recess and incline downwards at two sides.
Description
Technical field:
The present invention relates to a kind of efficient motor-car headstock reinforcement technology, the preceding top resistance area of the high speed train headstock that this efficient motor-car headstock reinforcement technology is used for moving on the different kinds of railways.
Background technology:
At present, what adopt on the preceding top resistance area of the high speed train headstock that moves on the different kinds of railways all is common planar or curved surface, this kind structural drag is big, resistance is not changed into the function of power, especially the power that consumes or waste when high-speed cruising is very big, air flow field becomes the big factor of consumption of power to the resistance that is produced when various high speed trains and motor-car high-speed motion, according to present principle of dynamics, the needs that can't adapt to the hyper-speed motion, it is the most perfect that its suffered resistance wave forms a structure when swiftly passing object is single structure, the resistance body of intensity maximum, therefore suffered resistance is also maximum, have only the resistance body structure is broken, by changing the structure of resistance wave or group power body, promptly just can effectively reduce the consumption that resistance reduces fuel by the preceding top force way that changes headstock.
Summary of the invention:
The present invention proposes in view of the above-mentioned problems, is purpose so that a kind of later-model motor-car high-efficiency energy-saving technology to be provided, this kind motor-car high-efficiency energy-saving technology efficient height, resistance is little, the fuel utilization height, energy-saving effect is remarkable, and the destructive force of mechanical equipment is also declined to a great extent.
In order to achieve the above object, the present invention adopts following technical proposals:
A kind of motor-car high-efficiency energy-saving technology, the preceding top or the rear portion resistance area that comprise the head of various power mobile objects such as various high speed trains and motor-car, it is characterized in that, the resistance area of various high speed trains and motor-car headstock or car body is provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the groove that opening is provided with backward and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is influenced by groove in groove to flow in the mode of turbulent flow to form turbulent flow and can and the sidewall of groove be formed the deboost effect of direction of flow, forms at least one stirred tank.
A kind of motor-car high-efficiency energy-saving technology, the preceding top or the rear portion resistance area that comprise the head of various power mobile objects such as various high speed trains and motor-car, it is characterized in that, on the preceding top of various high speed trains and motor-car headstock or car body or the resistance area at rear portion, be provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is opening and is provided with backward on the preceding top or rear portion resistance area that cascade groove is distributed in high speed train and motor-car, form at least one stair-stepping groove, fluid flows in the mode of turbulent flow in cascade groove and forms turbulent flow and can and the sidewall of cascade groove be formed the deboost effect of direction of flow, stressed at least one stair-stepping stirred tank that forms.
A kind of motor-car high-efficiency energy-saving technology, the preceding top or the rear portion resistance area that comprise the head of various power mobile objects such as various high speed trains and motor-car, it is characterized in that, on the preceding top of various high speed trains and motor-car headstock or car body or the resistance area at rear portion, be provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is opening and asks that the groove of the stair-stepping extension in back is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one stair-stepping groove, fluid can and form the deboost effect of direction of flow to the sidewall of cascade groove with the mobile formation of the mode turbulent flow of turbulent flow in cascade groove, form at least one stirred tank, be provided with in the bottom of stirred tank carinate near the recess center along the wing of the downward-sloping ridge in the both sides of stirred tank line of centers projection.
Preferably, influenced by groove structure when recess has fluid to flow through in the groove of described motor-car high-efficiency energy-saving technology is to be referred to as stirred tank with the mobile event of the form of turbulent flow, and recess is referred to as the turbulent flow recess.
Preferably, the preceding top or the rear portion resistance area of described various high speed train and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the enlarged gradually backward groove of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is influenced by groove in groove to flow in the mode of turbulent flow to form turbulent flow and can and the sidewall of groove be formed the deboost effect of direction of flow, forms at least one stirred tank.
Preferably, the preceding top or the rear portion resistance area of described various high speed train and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the extend back groove of shape of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is influenced by groove in groove to flow in the mode of turbulent flow to form turbulent flow and can and the sidewall of groove be formed the deboost effect of direction of flow, forms at least one stirred tank.
Preferably, the preceding top or the rear portion resistance area of described various high speed train and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the stepped backward enlarged gradually groove of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one cascade groove, fluid flows in the mode of turbulent flow in cascade groove and forms turbulent flow and can and the sidewall of cascade groove be formed the deboost effect of direction of flow, forms at least one stair-stepping stirred tank.
Preferably, the preceding top or the rear portion resistance area of described various high speed train and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the groove that the turbulent flow recess is the stepped backward extension shape of opening is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one cascade groove, fluid flows in the mode of turbulent flow in cascade groove and forms turbulent flow and can and the sidewall of cascade groove be formed the deboost effect of direction of flow, forms at least one stair-stepping stirred tank.
Preferably, the preceding top or the rear portion resistance area of described various high speed train and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the enlarged gradually backward groove of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is subjected to groove to influence the deboost effect that can and the sidewall of groove be formed direction of flow with the mobile formation of the mode turbulent flow of turbulent flow in groove, form at least one stirred tank, be provided with in the bottom of stirred tank near the wing of the downward-sloping ridge in the both sides of the eye stirred tank line of centers projection recess center.
Preferably, the preceding top or the rear portion resistance area of described various high speed train and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the extend back groove of shape of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is subjected to groove to influence the deboost effect that can and the sidewall of groove be formed direction of flow with the mobile formation of the mode turbulent flow of turbulent flow in groove, form at least one stirred tank, be provided with in the bottom of stirred tank near the wing of the downward-sloping ridge in the both sides of the eye stirred tank line of centers projection recess center.
Preferably, on the resistance area at the preceding top of described various high speed trains and motor-car headstock or car body or rear portion, be provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the groove that the turbulent flow recess is stepped backward extension of opening or amplification gradually is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one stair-stepping groove, fluid can and form the deboost effect of direction of flow to the sidewall of cascade groove with the mobile formation of the mode turbulent flow of turbulent flow in cascade groove, form at least one stair-stepping stirred tank, be provided with in the bottom of stirred tank near the wing of the downward-sloping ridge in the both sides of the eye stirred tank line of centers projection recess center.
On the preceding top of the head of motor-car high-efficiency energy-saving technology or the resistance area or friction face at rear portion, be provided with at least one recess, the stressed turbulent flow recess that forms of recess, being the stepped backward groove that amplifies gradually of opening is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, stressed at least one stirred tank that forms of groove is formed with at least one stair-stepping stirred tank.
Beneficial effect:
The resistance that air flow field is produced when various high speed trains and motor-car high-speed motion increases with the quickening of speed, by the motor-car high-efficiency energy-saving technology on the resistance area of various high speed trains and motor-car headstock or car body, the turbulent flow recess is set, and stirred tank, making fluid is that direction of flow is converted into the deboost effect along the cell wall direction of stirred tank backward, decomposed resistance, the resistance of fluid is transformed thrust forward for various high speed trains and motor-car headstock or car body, the structure of stepped stirred tank then is that fluid more energy reverse direction flow is acted on groove, the dimension fluid turbulent can further be utilized and do thrust, the carinate wing of the projection that is provided with in the bottom of groove more turns to side stirred tank cell wall from the recess center with the power of fluid, resistance is converted into forward thrust, it is big more that the power that the speed of mobile overcomes air resistance more soon and consumed accounts for the ratio that total output consumes, therefore to be converted into the energy of power also just big more for resistance, thereby improved efficient greatly, saved the energy, this technology is effective utilization of the turbulence energy of convection cell.
Description of drawings
Technical scheme of the present invention and advantage will describe in conjunction with width of cloth figure, in this accompanying drawing:
Fig. 1 is the scheme drawing of a kind of motor-car high-efficiency energy-saving technology of first embodiment of the present invention.
The specific embodiment:
Explain the preferred implementation of super maneuvering-vehicle of the present invention below in conjunction with accompanying drawing, in embodiment 1, mainly with the motor-car high-efficiency energy-saving technology, turbulent flow recess that is provided with on the preceding top of various high speed trains and motor-car headstock or car body or the rear portion resistance area and stirred tank or stair-stepping stirred tank are that example describes.
Embodiment 1:
A kind of motor-car high-efficiency energy-saving technology, as shown in Figure 1, the motor-car high-efficiency energy-saving technology of first embodiment of the present invention, comprise motor-car headstock 1, car body 2, this motor-car headstock 1, car body 2 connects or forms as one, power-assisted motor-car headstock 1 is provided with at least one turbulent flow recess 5, extend back or be opening and amplify shape backward gradually and be distributed in and form stirred tank 6 on the car body 2, be formed with two side 3 in stirred tank 6, roof 9 is provided with at least one turbulent flow recess 7, extends back or be opening to amplify shape backward gradually and be distributed in and form at least one stirred tank 8 on the car body 2.
According to said structure, owing on power-assisted motor-car headstock 1, turbulent flow recess 5 is arranged, so compare with motor-car in the past, this turbulent flow recess 5 has the effect with the resistance decomposition of power-assisted motor-car headstock 1, and drag stream can be disperseed fast and then formed antagonistic force to the two side of stirred tank 6 along stirred tank 6, resistance is changed into the effect of thrust, thereby reduce the resistance of motor-car headstock 1 and car body 2, decomposed the formed resistance body of resistance wave, when object during in the motion of fluid high speed even hyper-speed, it is identical that the effect that resistance produced that mobile is subjected to fluid and solid bump against suffered antagonistic force, can regard fluid as solid, therefore resistance wave can be regarded as the resistance body, by destroying the structure of resistance body, the resistance that power-assisted motor-car headstock 1 and car body 2 are subjected to reduces, simultaneously, the sidewall of stirred tank 6 is for amplifying shape backward, suffered impulsive force is changed into along the two sides of stirred tank 6 thrust forward thereby has been improved efficient, save the energy, on roof 9, carried out the effect that being provided with of same principle can be played increases aforementioned effect.
According to said structure, because at motor-car headstock 1, be provided with turbulent flow recess 5 on the car body 2, stirred tank 6, turbulent flow recess 7, stirred tank 8 or at stirred tank 6, the bottom of stirred tank 8 is provided with the carinate wing near the downward-sloping ridge in the both sides of the eye stirred tank line of centers projection recess center, or at stirred tank 6, the bottom of stirred tank 8 is provided with stair-stepping stirred tank 6 or stirred tank 8, has improved the acting effect of motor-car high-efficiency energy-saving technology, thereby the motor-car high-efficiency energy-saving technology is achieved, and then reach raising speed, increase the effect of voyage.
By so constituting, on the basis of the technique effect of embodiment 1, owing to be formed with turbulent flow recess 5, and stirred tank 6 turbulent flow recesses 7, stirred tank 8 has greatly strengthened the acting effect, makes the motor-car high-efficiency energy-saving technology reduce resistance in advancing and has saved the energy.
More than the turbulent flow recess 5 that adopted of the motor-car high-efficiency energy-saving technology of all embodiments, stirred tank 6, turbulent flow recess 7, stirred tank 8, the carinate wing near the downward-sloping ridge in the both sides of the eye stirred tank line of centers projection recess center, and stair-stepping stirred tank 6, the mode of stirred tank 8 is provided with on the bearing surface of the head of various motor-cars and all can effectively increases acting and reach the effect of raising the efficiency.
Though more than be that example is illustrated to have the motor-car high-efficiency energy-saving technology, but turbulent flow recess 5 of the present invention and stirred tank 6 or turbulent flow recess 7, stirred tank 8 can implemented on more self-propelled vehicle, can adopt the structure of embodiment and the combination of other various ways as described in above-mentioned structure.
Above-described preferred implementation is illustrative and not restrictive, under the situation of the essential characteristic that does not break away from purport of the present invention, the present invention can also otherwise implement and specialize, scope of the present invention is limited by claim, and all distortion in the claim limited range all fall within the scope of the present invention.
Claims (10)
1. motor-car high-efficiency energy-saving technology, the preceding top or the rear portion resistance area that comprise the head of various power mobile objects such as various high speed trains and motor-car, it is characterized in that, the resistance area of various high speed trains and motor-car headstock or car body is provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the groove that opening is provided with backward and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is influenced by groove in groove to flow in the mode of turbulent flow to form turbulent flow and can and the sidewall of groove be formed the deboost effect of direction of flow, forms at least one stirred tank.
2. motor-car high-efficiency energy-saving technology, the preceding top or the rear portion resistance area that comprise the head of various power mobile objects such as various high speed trains and motor-car, it is characterized in that, on the preceding top of various high speed trains and motor-car headstock or car body or the resistance area at rear portion, be provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is opening and is provided with backward on the preceding top or rear portion resistance area that cascade groove is distributed in high speed train and motor-car, form at least one stair-stepping groove, fluid flows in the mode of turbulent flow in cascade groove and forms turbulent flow and can and the sidewall of cascade groove be formed the deboost effect of direction of flow, stressed at least one stair-stepping stirred tank that forms.
3. motor-car high-efficiency energy-saving technology, the preceding top or the rear portion resistance area that comprise the head of various power mobile objects such as various high speed trains and motor-car, it is characterized in that, on the preceding top of various high speed trains and motor-car headstock or car body or the resistance area at rear portion, be provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is opening and is provided with backward on the preceding top or rear portion resistance area that groove is distributed in high speed train and motor-car, form at least one groove, fluid can and form the deboost effect of direction of flow to the sidewall of groove with the mobile formation of the mode turbulent flow of turbulent flow in groove, form at least one stirred tank, be provided with the carinate wing in the bottom of stirred tank near the downward-sloping ridge in the both sides of the eye stirred tank line of centers projection recess center.
4. motor-car high-efficiency energy-saving technology as claimed in claim 1, it is characterized in that, the preceding top or the rear portion resistance area of various high speed trains and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the enlarged gradually backward groove of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is influenced by groove in groove to flow in the mode of turbulent flow to form turbulent flow and can and the sidewall of groove be formed the deboost effect of direction of flow, forms at least one stirred tank.
5. motor-car high-efficiency energy-saving technology as claimed in claim 1, the motor-car high-efficiency energy-saving technology, it is characterized in that, the preceding top or the rear portion resistance area of various high speed trains and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the extend back groove of shape of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is influenced by groove in groove to flow in the mode of turbulent flow to form turbulent flow and can and the sidewall of groove be formed the deboost effect of direction of flow, forms at least one stirred tank.
6. as claim 1,2,4 arbitrary described motor-car high-efficiency energy-saving technologies, the motor-car high-efficiency energy-saving technology, it is characterized in that, the preceding top or the rear portion resistance area of various high speed trains and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the stepped backward enlarged gradually groove of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one cascade groove, fluid flows in the mode of turbulent flow in cascade groove and forms turbulent flow and can and the sidewall of cascade groove be formed the deboost effect of direction of flow, forms at least one stair-stepping stirred tank.
7. as claim 1,2,5 arbitrary described motor-car high-efficiency energy-saving technologies, the motor-car high-efficiency energy-saving technology, it is characterized in that, the preceding top or the rear portion resistance area of various high speed trains and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the groove that the turbulent flow recess is the stepped backward extension shape of opening is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one cascade groove, fluid flows in the mode of turbulent flow in cascade groove and forms turbulent flow and can and the sidewall of cascade groove be formed the deboost effect of direction of flow, forms at least one stair-stepping stirred tank.
8. as claim 1,3,4 arbitrary described motor-car high-efficiency energy-saving technologies, the motor-car high-efficiency energy-saving technology, it is characterized in that, the preceding top or the rear portion resistance area of various high speed trains and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the enlarged gradually backward groove of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is subjected to groove to influence the deboost effect that can and the sidewall of groove be formed direction of flow with the mobile formation of the mode turbulent flow of turbulent flow in groove, form at least one stirred tank, be provided with in the bottom of stirred tank near the recess center along the wing of the downward-sloping ridge in the both sides of stirred tank line of centers projection.
9. as claim 1,3,5 arbitrary described motor-car high-efficiency energy-saving technologies, the motor-car high-efficiency energy-saving technology, it is characterized in that, the preceding top or the rear portion resistance area of various high speed trains and motor-car headstock or car body are provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the turbulent flow recess is the extend back groove of shape of opening and is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one groove, fluid is subjected to groove to influence the deboost effect that can and the sidewall of groove be formed direction of flow with the mobile formation of the mode turbulent flow of turbulent flow in groove, form at least one stirred tank, be provided with in the bottom of stirred tank near the recess center along the wing of the downward-sloping ridge in the both sides of stirred tank line of centers projection.
10. as the arbitrary described motor-car high-efficiency energy-saving technology of claim 1-9, it is characterized in that, on the preceding top of various high speed trains and motor-car headstock or car body or the resistance area at rear portion, be provided with at least one recess, recess flows through the turbulization effect through fluid and forms the turbulent flow recess, the groove that the turbulent flow recess is stepped backward extension of opening or amplification gradually is distributed on the preceding top or rear portion resistance area of high speed train and motor-car, form at least one stair-stepping groove, fluid can and form the deboost effect of direction of flow to the sidewall of cascade groove with the mobile formation of the mode turbulent flow of turbulent flow in cascade groove, form at least one stair-stepping stirred tank, be provided with in the bottom of stirred tank near the recess center along the wing of the downward-sloping ridge in the both sides of stirred tank line of centers projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101191731A CN102248950A (en) | 2011-05-02 | 2011-05-02 | High-efficiency energy-saving technology for bullet train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101191731A CN102248950A (en) | 2011-05-02 | 2011-05-02 | High-efficiency energy-saving technology for bullet train |
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| CN102248950A true CN102248950A (en) | 2011-11-23 |
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| CN2011101191731A Pending CN102248950A (en) | 2011-05-02 | 2011-05-02 | High-efficiency energy-saving technology for bullet train |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4718620A (en) * | 1984-10-15 | 1988-01-12 | Braden John A | Terraced channels for reducing afterbody drag |
| WO1989011343A2 (en) * | 1988-05-26 | 1989-11-30 | Bmt Fluid Mechanics Limited | Improvements in or relating to reduction of drag |
| US20040126541A1 (en) * | 2002-12-31 | 2004-07-01 | Dietz Timothy M. | Drag reduction article and method of use |
| US20070235590A1 (en) * | 2006-01-31 | 2007-10-11 | Kokoshkin Roman N | Vortex generator |
| CN101767592A (en) * | 2008-12-30 | 2010-07-07 | 朱晓义 | High-speed and energy-saving train |
-
2011
- 2011-05-02 CN CN2011101191731A patent/CN102248950A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4718620A (en) * | 1984-10-15 | 1988-01-12 | Braden John A | Terraced channels for reducing afterbody drag |
| WO1989011343A2 (en) * | 1988-05-26 | 1989-11-30 | Bmt Fluid Mechanics Limited | Improvements in or relating to reduction of drag |
| US20040126541A1 (en) * | 2002-12-31 | 2004-07-01 | Dietz Timothy M. | Drag reduction article and method of use |
| US20070235590A1 (en) * | 2006-01-31 | 2007-10-11 | Kokoshkin Roman N | Vortex generator |
| CN101767592A (en) * | 2008-12-30 | 2010-07-07 | 朱晓义 | High-speed and energy-saving train |
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Application publication date: 20111123 |