CN107600409A - Device and method caused by the lift of air circulation flow is accelerated based on cross flow fan - Google Patents
Device and method caused by the lift of air circulation flow is accelerated based on cross flow fan Download PDFInfo
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- CN107600409A CN107600409A CN201710680932.9A CN201710680932A CN107600409A CN 107600409 A CN107600409 A CN 107600409A CN 201710680932 A CN201710680932 A CN 201710680932A CN 107600409 A CN107600409 A CN 107600409A
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- flow fan
- cross flow
- lift
- air
- reflux line
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Abstract
Device and method caused by the lift of air circulation flow is accelerated based on cross flow fan the invention discloses a kind of, still air has any relative motion in other words with ground in itself without aircraft for the generation of lift, you can to realize the VTOL of aircraft.Including：The cross flow fan being located on wing and the reflux line being located at below aerofoil；The reflux line is the circulating line structure of upper end open all round closure, the reflux line wraps up the wing, the circular passage of a upper end open is formed between the wing and the reflux line, the cross flow fan is located at the aperture position of the circular passage；Opening in the circular passage, air inlet and air outlet are formed respectively between the aerofoil of the cross flow fan both sides and the opening of the reflux line, suction surface is formed respectively on the aerofoil.
Description
Technical field
The invention belongs to the low speed high capacity aviation aircraft field with short take-off and landing or VTOL performance, specifically
It is related to and device and method caused by the lift of air circulation flow is accelerated based on cross flow fan.
Background technology
In existing aviation aircraft, divide from wing type, Fixed Wing AirVehicle and rotor craft can be divided into.To the greatest extent
Pipe Fixed Wing AirVehicle has that load is big, the characteristic of voyage length, but it is because the generation of its lift is dependent on aircraft and static
The relative velocity that air has, therefore, it is necessary to the runway of certain length during takeoff and landing.And common gyroplane bag
Include helicopter and at present the lift source of most rotor wing unmanned aerial vehicle and the rotor of high-speed rotation air is accelerated downwards so as to
Rotor is set to obtain upward reaction force next caused.Although gyroplane has the characteristic of short take-off and landing or VTOL,
It is that producing for this lift usually requires powerful power to accelerate air, therefore lift effect has phase caused by unit power
When limitation.
Recent years, a kind of aircraft that the leading edge of a wing or trailing edge are arranged on based on cross flow fan and cause lift to be lifted, letter
Claim fan rotor aircraft, breach the respective topical type of both Fixed Wing AirVehicle and rotor craft to a certain extent.Using
This technology, because cross flow fan is to the acceleration of air and its internal eccentric low pressure whirlpool, it on the one hand can realize fixed-wing
Aircraft will have bigger speed when the air-flow of wing suction surface is relative to without cross flow fan, on the other hand, be produced using rotary power
Raw low pressure eccentric vortex, can produce bigger lift, so that lift caused by this lift system and relative consuming work(
The efficiency of rate, to be largely higher than two quasi-tradition aircraft.
But in the general fan rotor aircraft proposed at present, lift therein, which produces, to be come from and cross flow fan and air
Relative motion, this relative motion derives from aircraft and still air, that is, the relative motion of ground static target again.
And the rule of this lift principle is that lift is directly proportional to cross flow fan and still air speed of related movement.So, even if can
To realize the landing of low speed big load, takeoff phase and landing phases are also required to the runway of certain length for its acceleration and slowed down.
The content of the invention
It is an object of the invention to provide it is a kind of based on cross flow fan accelerate air circulation flow lift caused by device and
Method, without aircraft, still air has any relative motion in other words with ground in itself for the generation of lift, you can is flown with realizing
The VTOL of row device.
In order to achieve the above object, concrete technical scheme of the invention is as follows：
Device caused by the lift of air circulation flow is accelerated based on cross flow fan, including：Be located at cross flow fan on wing with
And it is located at the reflux line below aerofoil；The reflux line be upper end open all round closure circulating line structure, described time
Wing described in duct wraps is flowed, the circular passage of a upper end open, institute are formed between the wing and the reflux line
State the aperture position that cross flow fan is located at the circular passage；
Opening in the circular passage, divide between the aerofoil of the cross flow fan both sides and the opening of the reflux line
Not Xing Cheng air inlet and air outlet, form suction surface respectively on the aerofoil.
Further, groove is provided with the wing, the cross flow fan is located in the groove, while in the groove
It is interior to form eccentric low pressure whirlpool, vortex wall is formed between the cross flow fan and aerofoil；Tied to be semicircle in the section of the groove
Structure is less than 180 ° of curved slot arrangements for being more than 100 ° for radian；
In the lower section of the wing, the inwall of the reflux line is reflux line lower wall surface, and the bottom surface of the wing is
Reflux line upper wall surface.
Present invention also offers accelerate method caused by the lift of air circulation flow, including following step based on cross flow fan
Suddenly：
A. the cross flow fan is started, the cross flow fan accelerates to the air around it, and in the cross flow fan and institute
State and form eccentric low pressure whirlpool between wing wall；
B. the air that the eccentric low pressure whirlpool is continued into around is constantly accelerated by the cross flow fan, and passes through the air intake
Mouth enters in the reflux line, and it is described that continuation in the eccentric low pressure whirlpool is gone successively to after being come out from the air outlet
Cross flow fan accelerates, and continues to enter the reflux line from air inlet, and air so circulation is constantly accelerated, until reaching a kind of dynamic
State balances, and finally the wing is formed on the suction surface of the cross flow fan both sides and on the vortex wall powerful
Lift or thrust.
Further, in step b, by adjust the cross flow fan rotating speed and then the lift or thrust caused by regulation
Size.
Further, in step b, in addition to the ratio by adjusting the shape of the suction surface or allowing air-flow to escape is big
It is small, and then adjust the size of the lift or thrust.
Device and method caused by lift provided by the invention based on cross flow fan acceleration air circulation flow, utilizes wing
The cross flow fan of suction surface, the air incoming before it is accelerated to the rear of cross flow fan, using feed back return flow line will accelerate after
Air draught deliver to the leading edge of a wing again, it is flowed through suction surface and then flow into before cross flow fan, again speeded up into cross flow fan.
This process is repeated, until reaching a kind of dynamic equilibrium：The accelerated energy of air-flow be equal in cyclic process air-flow and
Friction and its related pneumatic energy loss of the upper wall surface to front/rear end wall consume under suction surface wall, reflux line.
The generation of lift is mainly derived from eccentric low pressure whirlpool inside the relative motion and its cross flow fan of moving air and suction surface.Here,
On reflux line the lift of lower wall surface due to air-flow it is of substantially equal relative to the two wall movement velocitys, therefore lifting force can
To cancel each other.In addition, the size of lift can directly be controlled using the rotating speed of cross flow fan.The shape of suction surface is for from horizontal stroke
The size of stream fan upper lid body outer gas stream effusion has direct relation：One side air escape can produce thrust；On the other hand,
The size of air escape can adjust the size of thrust and its size of lift, therefore this regulation can be taken as this liter
The governing factor of Force system aircraft.
Brief description of the drawings
Fig. 1 is device profile caused by the lift provided by the invention based on cross flow fan acceleration air circulation flow；
Fig. 2 is the three-dimensional structure provided by the invention for accelerating device caused by the lift of air circulation flow based on cross flow fan
Schematic diagram
1. cross flow fan, 2. wings, 3. vortex walls, 4. suction surfaces, 5. reflux line upper wall surfaces, 6. reflux line lower walls
Face, 7. reflux lines.
Embodiment
Embodiments of the present invention are illustrated below in conjunction with the accompanying drawings.
Device caused by the lift of air circulation flow is accelerated based on cross flow fan 1, as depicted in figs. 1 and 2, including：It is located at
Cross flow fan 1 on wing 2 and the reflux line 7 being located at below aerofoil；The reflux line 7 is upper end open all round closure
Circulating line structure, the reflux line 7 wrap up the wing 2, and one is formed between the wing 2 and the reflux line 7
The circular passage of individual upper end open, the cross flow fan 1 are located at the aperture position of the circular passage；
Opening in the circular passage, between the aerofoil of the both sides of cross flow fan 1 and the opening of the reflux line 7
Air inlet and air outlet are formed respectively, form suction surface 4 respectively on the aerofoil.
Groove is provided with the wing 2, the cross flow fan 1 is located in the groove, while is formed in the groove
Eccentric low pressure whirlpool, vortex wall 3 is formed between the cross flow fan 1 and aerofoil；
In the lower section of the wing 2, the inwall of the reflux line 7 is reflux line lower wall surface 6, the bottom of the wing 2
Face is reflux line upper wall surface 5.
Present invention also offers accelerate method caused by the lift of air circulation flow, including following step based on cross flow fan 1
Suddenly：
A. start the cross flow fan 1, the cross flow fan 1 accelerates to the air around it, and the cross flow fan 1 with
Eccentric low pressure whirlpool is formed between the wall of wing 2；
B. around the air in the eccentric low pressure whirlpool is continued into constantly by the cross flow fan 1 to be accelerated, and by it is described enter
Air port enters in the reflux line 7, and out goes successively to continue quilt in the eccentric low pressure whirlpool afterwards from the air outlet
The cross flow fan 1 accelerates, and continues to enter the reflux line 7 from air inlet, air so circulation is constantly accelerated, until reaching
A kind of dynamic equilibrium, finally to the machine on the suction surface 4 of the both sides of cross flow fan 1 and on the vortex wall 3
The wing 2 forms powerful lift or thrust.
It is a feature of the present invention that still air is accelerated first with cross flow fan 1；The second is the pipe using aerofoil lower floor
Accelerated air is fed back to the incoming before cross flow fan 1 by road, and this incoming accelerates to the rear portion of cross flow fan 1 by cross flow fan 1 again, directly
Feedback cycle to air-stable is formed.Here, acceleration of the cross flow fan 1 to air-flow correspond in cyclic process air-flow and up and down
It is lost and in effusion of air of suction face etc. caused by each wall friction.Lift derives from high-speed circulating movement air flow and machine
The relative motion of the suction face of the wing 2 and its intermediate region bias low pressure whirlpool of cross flow fan 1 produce.And high-speed circulating motive air is backward
Part effusion can produce certain thrust.
Can by adjust the cross flow fan 1 rotating speed and then the size of the lift or thrust caused by regulation.Also wrap
The scale for including the shape by adjusting the suction surface 4 or allowing air-flow to escape, and then adjust the lift or thrust
Size.
Due to high-speed circulating flowing rotating speed depending on cross flow fan 1 of the air inside and outside wing 2, the generation of lift is without flying
Row device has any relative motion with ground, still air in itself, therefore can realize the VTOL of aircraft.
Because wing 2 divides for suction surface 4 and upper and lower pipe surface, and the caused lift of pipe surface can be supported mutually up and down
Disappear, such lift can be adjusted only from suction surface 4 and the vortex wall 3 of cross flow fan 1 using the rotating speed of cross flow fan 1
Save the size of lift.And from the point of view of experimental result, vortex wall is because depth is bigger, and air pressure is lower, and its caused lift is bigger.
On the other hand, using the effusion scale adjusted in the air-flow of suction surface 4, corresponding lift can also be adjusted and pushed away
The size of power, this respect can be as the controlling elements of the aircraft to this lift system of future usage.Wherein, can also lead to
Lift size caused by the shape of suction surface and then regulation is overregulated, and the shape of suction surface can be plane or have arc recessed
Slot structure.
More than, although the description of several embodiments of the invention, but these embodiments are intended only as example proposition
, it is not intended to limit the scope of the present invention.For these new embodiments, can be implemented in a manner of other are various,
In the range of idea of the invention is not departed from, various omissions, displacement and change can be carried out.These embodiments and its change
Shape, the invention being also contained in described in claims while being contained in scope and spirit of the present invention and its impartial model
In enclosing.
Claims (5)
1. device caused by the lift of air circulation flow is accelerated based on cross flow fan, it is characterised in that including：It is located on wing
Cross flow fan and the reflux line being located at below aerofoil；The reflux line is the circulating line knot of upper end open all round closure
Structure, the reflux line wrap up the wing, and the ring of a upper end open is formed between the wing and the reflux line
Shape passage, the cross flow fan are located at the aperture position of the circular passage；
Opening in the circular passage, shape is distinguished between the aerofoil of the cross flow fan both sides and the opening of the reflux line
Into air inlet and air outlet, suction surface is formed respectively on the aerofoil.
2. according to claim 1 accelerate device caused by the lift of air circulation flow based on cross flow fan, its feature exists
In being provided with groove on the wing, the cross flow fan is located in the groove, while eccentric low pressure is formed in the groove
Whirlpool, vortex wall is formed between the cross flow fan and aerofoil；The section of the groove is semicircular structure or is that radian is small
It is more than 100 ° of curved slot arrangement in 180 °；
In the lower section of the wing, the inwall of the reflux line is reflux line lower wall surface, and the bottom surface of the wing is backflow
Pipeline upper wall surface.
3. accelerate method caused by the lift of air circulation flow based on cross flow fan as claimed in claim 1, it is characterised in that
Comprise the following steps：
A. the cross flow fan is started, the cross flow fan accelerates to the air around it, and in the cross flow fan and the machine
Eccentric low pressure whirlpool is formed between alar wall face；
B. the air that the eccentric low pressure whirlpool is continued into around is constantly accelerated by the cross flow fan, and is entered by the air inlet
Enter in the reflux line, and out go successively to continue by the crossing current in the eccentric low pressure whirlpool afterwards from the air outlet
Fan accelerates, and continues to enter the reflux line from air inlet, air so circulation is constantly accelerated, put down until reaching a kind of dynamic
Weighing apparatus, powerful liter is finally formed to the wing on the suction surface of the cross flow fan both sides and on the vortex wall
Power or thrust.
4. according to claim 3 accelerate method caused by the lift of air circulation flow based on cross flow fan, its feature exists
In, in step b, by adjust the cross flow fan rotating speed and then the size of the lift or thrust caused by regulation.
5. according to claim 3 accelerate method caused by the lift of air circulation flow based on cross flow fan, its feature exists
In, in step b, in addition to the scale that shape or air-flow by adjusting the suction surface escape, and then described in regulation
The size of lift or thrust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710680932.9A CN107600409B (en) | 2017-08-10 | 2017-08-10 | The device and method for accelerating the lift of air circulation flow to generate based on cross flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710680932.9A CN107600409B (en) | 2017-08-10 | 2017-08-10 | The device and method for accelerating the lift of air circulation flow to generate based on cross flow fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107600409A true CN107600409A (en) | 2018-01-19 |
| CN107600409B CN107600409B (en) | 2019-10-29 |
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| CN201710680932.9A Active CN107600409B (en) | 2017-08-10 | 2017-08-10 | The device and method for accelerating the lift of air circulation flow to generate based on cross flow fan |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2405624A (en) * | 2003-09-05 | 2005-03-09 | Fanwing Ltd | Wing with lift augmentation |
| CN101998920A (en) * | 2008-04-07 | 2011-03-30 | 空中客车营运有限公司 | Flow element, and high-lift system comprising such a flow element |
| CN103587702A (en) * | 2012-08-14 | 2014-02-19 | 林彦良 | Cross flow fan flying device |
| CN204750567U (en) * | 2015-05-07 | 2015-11-11 | 南京航空航天大学 | High -speed fan wing aircraft |
-
2017
- 2017-08-10 CN CN201710680932.9A patent/CN107600409B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2405624A (en) * | 2003-09-05 | 2005-03-09 | Fanwing Ltd | Wing with lift augmentation |
| WO2005023645A1 (en) * | 2003-09-05 | 2005-03-17 | Fanwing Limited | Lift augmentation device and method |
| CN101998920A (en) * | 2008-04-07 | 2011-03-30 | 空中客车营运有限公司 | Flow element, and high-lift system comprising such a flow element |
| CN103587702A (en) * | 2012-08-14 | 2014-02-19 | 林彦良 | Cross flow fan flying device |
| CN204750567U (en) * | 2015-05-07 | 2015-11-11 | 南京航空航天大学 | High -speed fan wing aircraft |
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| Publication number | Publication date |
|---|---|
| CN107600409B (en) | 2019-10-29 |
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Effective date of registration: 20220927 Address after: 101400 room 208, second floor, building 13, yard 53, Yanqi street, Yanqi Economic Development Zone, Huairou District, Beijing (cluster registration) Patentee after: Beijing Kelisen Technology Co.,Ltd. Address before: 100190, No. 15 West Fourth Ring Road, Beijing, Haidian District Patentee before: INSTITUTE OF MECHANICS, CHINESE ACADEMY OF SCIENCES |