CN104743118B - Dish-style goes straight up to machinery - Google Patents
Dish-style goes straight up to machinery Download PDFInfo
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- CN104743118B CN104743118B CN201510189604.XA CN201510189604A CN104743118B CN 104743118 B CN104743118 B CN 104743118B CN 201510189604 A CN201510189604 A CN 201510189604A CN 104743118 B CN104743118 B CN 104743118B
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Abstract
The present invention provides a kind of dish-style to go straight up to machinery, and there is a cylindrical boss dish body upper surface center, and center has under circular suction road, aspirating unit and connects lift pump, and the shell of lift pump has output channel to be connected with air storage chamber, and air vent outputed by air storage chamber.On the intersection top passed through mutually in lower edge and the dish wing box shape face of round platform, along the tangent line of intersection, circumference arranges several supersonic nozzle, the exhaustor UNICOM of the air inlet of jet pipe and air storage chamber.A valve it is provided with between the air inlet of each air vent and each described jet pipe.The present invention is mechanical without propeller, rotor and accurate override, and simple in construction is lightweight；Compared with the helicopter such as propeller, rotor, the climbing power that unit capacity obtains is big；Simple in construction, moving component is few, it is easy to ensure safe flight；Need not runway, inorganic field aerial can be realized；This version and operation principle can be used for the multiple flight machinery with lift-off, have extensive use.
Description
Technical field
The present invention relates to one and go straight up to machinery, go straight up to machinery particularly to a kind of dish-style.
Background technology
Now go straight up to machinery, be by driven by engine propeller, when propeller rotates, upper at oar
Surface forms low-pressure area, makes the air continuous print in the upper surface space in oar face be inhaled into, the air-flow being inhaled into
Oppressed by propeller blade, overcome the pressure of ambient atmosphere to flow downward with the highest speed, these quilts
The quality of the fluid of blade agitation is multiplied by the difference of these fluid Jet with downward flow direction speed and suction velocity, is oar
Leaf turning effort is to the downward momentum of air-flow.From the point of view of effect is equal to retroaction, in propeller effect to gas
Stream while momentum, air-flow with reaction amount retroaction in opposite direction equal in magnitude to blade, during unit
Between the change of momentum be exactly power, this power is to act on to go straight up to mechanically, is the most upwards, therefore
Helicopter can be gone straight up to.Propeller is yielding in operation process produces fatigue, it is possible to drops thus sends out
Make trouble former, and, propeller runs up and consumes substantial amounts of petroleum resources.
Summary of the invention
For solving the problems referred to above, the present invention provides a kind of dish-style to go straight up to machinery, including:
Dish body, described dish body is flat round box structure,
Boss, it is arranged on the center of described dish body upper surface, and it is circular that the center of described boss is provided with one
Aspirating flutes,
Lift pump, it is arranged on the bottom in described circular suction groove, and the shell of described lift pump is arranged
There is output channel,
Air storage chamber, it is arranged on described dish body lower surface, curved curved surface, is connected with described output channel,
And it is provided with some air vents,
Supersonic nozzle, the supersonic nozzle equal with described air vent quantity is uniformly arranged on described dish body
With the top of the intersection of the lower edge of described boss, the tangent line circumference head and the tail misconnection along described intersection is divided
Cloth,
Extension, described extension is arranged on each supersonic nozzle and is positioned at the position outside described boss
Putting, the outlet of described supersonic nozzle highlights relative to round platform with extension, and the lower edge at described round platform is formed
Zigzag is protruding,
Valve, is provided with a valve between the air inlet of each air vent and each described jet pipe.
Preferably, described dish-style is gone straight up in machinery, and described supersonic nozzle is Laval nozzle, and
Number is more than three.
Preferably, described dish-style is gone straight up in machinery, the puff prot cross section side of being of described supersonic nozzle
Shape or circle.
Preferably, described dish-style is gone straight up in machinery, and the tube wall curved surface of described supersonic nozzle is controlled
Curved surface.
Preferably, described dish-style is gone straight up in machinery, and the cross section of the outline of described extension is
Square, and there are four sidewalls, including lower horizontal side wall, upper horizontal side wall, interior vertical sidewall with outer hang down
Straight sidewall, described outer vertical sidewall is tangent with described circumference baseline, and point of contact is positioned at described supersonic nozzle
The corresponding position of air inlet, described outer vertical sidewall is interior vertical with described previous supersonic nozzle
Sidewall gives the puff prot position of described supersonic nozzle mutually.
Preferably, described dish-style is gone straight up in machinery, and described lift pump is axial-flow type lift pump or centrifugal
Formula lift pump.
Preferably, described dish-style is gone straight up in machinery, and described dish-style goes straight up to the air-flow of the upper surface of machinery
Motion, the upper surface going straight up to machinery in described dish-style forms low-pressure area, and described dish-style goes straight up to the following table of machinery
The air pressure in face is the atmospheric pressure being in geo-stationary, and described dish-style goes straight up to the upper and lower surface shape of machinery
Becoming pressure differential, the integration of described pressure differential is upward force, is i.e. that described dish-style goes straight up to external force suffered by machinery
Make a concerted effort, be i.e. that described dish-style goes straight up to mechanical lift.
Described dish-style is gone straight up in machinery, and the source of described low-pressure area includes:
The suction force of described lift pump acts on described dish-style and goes straight up to the air in machinery overhead, makes air obtain
The momentum declined, meanwhile, the upper surface going straight up to machinery in described dish-style forms low-pressure area；
The air-flow of described jet pipe injection is lowpressure stream when the exit position of described jet pipe, rotated centrifugal
Under the effect of power, described lowpressure stream is pushed to described dish-style and goes straight up to the outer rim of machinery, due to attached wall characteristics, patch
The flow velocity of the air-flow that nearly described dish-style goes straight up to machinery upper surface is higher so that described dish-style goes straight up to the upper of machinery
Surface forms low-pressure area；
Described lowpressure stream is when the outer rim flowing of the upper surface that described dish-style goes straight up to machinery, because of velocity gradient
Producing friction and vortex, described friction and vortex and produce loss generation heat, described heat makes described dish-style
The temperature of the upper surface and described lowpressure stream of going straight up to machinery raises, and causes described lowpressure stream to rise, described dish
Formula goes straight up to the upper surface rarefaction of air of machinery, forms low-pressure area；
Described dish-style go straight up to machinery upper surface outer rim air-flow rise time, described vortex makes center
Air is thinner, exacerbates the Doenward flow of the air of described center, the air of described center
Flow velocity increases, flow increases, and the downward momentum of the air of described center increases, described center
The reaction force acts of air goes straight up to the air-flow of the outer rim of the upper surface of machinery in described dish-style, improves institute
Stating the rate of climb of air-flow of outer rim that dish-style goes straight up to the upper surface of machinery, described dish-style goes straight up to the upper of machinery
The pressure on surface reduces further.
Described dish-style is gone straight up in machinery, and described dish-style goes straight up to the flowing of the upper surface gas of machinery in circumference
Being uniform, what described dish-style went straight up to the lower surface contact of machinery is atmospheric pressure, and pressure ratio is more uniform, institute
State upward force act on described dish-style go straight up to machinery central shaft on.
The present invention provides a kind of dish-style to go straight up to machinery, at the upper surface of a sufficiently large flat box-like object,
There is a cylindricality round platform projection center, and round platform center has under circular suction road, aspirating unit and connects lift pump,
The shell of lift pump has output channel to be connected with air storage chamber, and air vent outputed by air storage chamber.Lower edge at round platform
With the intersection top passed through mutually in dish wing box shape face, along the tangent line of intersection, circumference arranges several supersonic speed
The exhaustor UNICOM of jet pipe, the air inlet of jet pipe and air storage chamber.Each air vent and each described jet pipe
A valve it is provided with between air inlet.The present invention is without propeller, rotor and accurate override machinery, structure
Simply, lightweight；Compared with the helicopter such as propeller, rotor, the climbing power that unit capacity obtains
Greatly；Simple in construction, moving component is few, it is easy to ensure safe flight；Need not runway, ground, the water surface,
Desert, grassland, marsh, highway landing, can realize inorganic field aerial；Deadly condition crew parachutes
Can realize；This version and operation principle can be used for the multiple flight machinery with lift-off, have extensively use
On the way.
Accompanying drawing explanation
Fig. 1 is the front view that dish-style of the present invention goes straight up to machinery,
Fig. 2 is the top view that dish-style of the present invention goes straight up to machinery,
Fig. 3 is the scattergram that dish-style of the present invention goes straight up to supersonic nozzle described in machinery.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, to make those skilled in the art's reference
Description word can be implemented according to this.
The present invention provides a kind of dish-style to go straight up to machinery, including:
Dish body 1, described dish body 1 is flat round box structure,
Boss 2, it is arranged on the center of described dish body 1 upper surface, and the center of described boss 2 is provided with
One circular suction groove 21,
Lift pump, it is arranged on the bottom in described circular suction groove 21, and the shell of described lift pump sets
It is equipped with output channel,
Air storage chamber 3, it is arranged on described dish body 1 lower surface, and curved curved surface, with described output channel
Connect, and be provided with some air vents,
Supersonic nozzle 4, the supersonic nozzle 4 equal with described air vent quantity is uniformly arranged on described
The top of the intersection of the lower edge of dish body 1 and described boss 2, first along the tangent line circumference of described intersection
Tail misconnection is distributed,
Extension 5, described extension 5 is arranged on each supersonic nozzle 4 and is positioned at described boss 2
The position in outside, described supersonic nozzle 4 exports round platform relative with extension 5 and highlights, at described circle
It is protruding that the lower edge of platform forms zigzag,
Valve, is provided with a valve between the air inlet of each air vent and each described jet pipe.
Described dish-style is gone straight up in machinery, and described supersonic nozzle 4 is Laval nozzle, and number is ten
Individual.
Described dish-style is gone straight up in machinery, and the puff prot cross section of described supersonic nozzle 4 is square or circular.
Described dish-style is gone straight up in machinery, and the tube wall curved surface of described supersonic nozzle 4 is CV Surf.
Described dish-style is gone straight up in machinery, and the cross section of the outline of described extension 5 is square, and
There are four sidewalls, including lower horizontal side wall, upper horizontal side wall, interior vertical sidewall and outer vertical sidewall,
Described outer vertical sidewall is tangent with described circumference baseline, and point of contact is positioned at the air inlet of described supersonic nozzle 4
The interior vertical sidewall of the position that mouth is corresponding, described outer vertical sidewall and described previous supersonic nozzle 4
Give the puff prot position of described supersonic nozzle 4 mutually.
Described dish-style is gone straight up in machinery, and described lift pump is axial-flow type lift pump.
Described dish-style is gone straight up in machinery, and described dish-style goes straight up to the air motion of the upper surface of machinery, in institute
Stating dish-style and go straight up to the upper surface formation low-pressure area of machinery, the air pressure of the lower surface that described dish-style goes straight up to machinery is
Being in the atmospheric pressure of geo-stationary, described dish-style is gone straight up to the upper and lower surface of machinery and is formed pressure differential,
The integration of described pressure differential is upward force, is i.e. that described dish-style goes straight up to making a concerted effort of external force suffered by machinery, is i.e.
Described dish-style goes straight up to the lift of machinery.
Described dish-style is gone straight up in machinery, and the source of described low-pressure area includes:
The suction force of described lift pump acts on described dish-style and goes straight up to the air in machinery overhead, makes air obtain
The momentum declined, meanwhile, the upper surface going straight up to machinery in described dish-style forms low-pressure area；
The air-flow of described jet pipe injection is lowpressure stream when the exit position of described jet pipe, rotated centrifugal
Under the effect of power, described lowpressure stream is pushed to described dish-style and goes straight up to the outer rim of machinery, due to attached wall characteristics, patch
The flow velocity of the air-flow that nearly described dish-style goes straight up to machinery upper surface is higher so that described dish-style goes straight up to the upper of machinery
Surface forms low-pressure area；
Described lowpressure stream is when the outer rim flowing of the upper surface that described dish-style goes straight up to machinery, because of velocity gradient
Producing friction and vortex, described friction and vortex and produce loss generation heat, described heat makes described dish-style
The temperature of the upper surface and described lowpressure stream of going straight up to machinery raises, and causes described lowpressure stream to rise, described dish
Formula goes straight up to the upper surface rarefaction of air of machinery, forms low-pressure area；
Described dish-style go straight up to machinery upper surface outer rim air-flow rise time, described vortex makes center
Air is thinner, exacerbates the Doenward flow of the air of described center, the air of described center
Flow velocity increases, flow increases, and the downward momentum of the air of described center increases, described center
The reaction force acts of air goes straight up to the air-flow of the outer rim of the upper surface of machinery in described dish-style, improves institute
Stating the rate of climb of air-flow of outer rim that dish-style goes straight up to the upper surface of machinery, described dish-style goes straight up to the upper of machinery
The pressure on surface reduces further.
Described dish-style is gone straight up in machinery, and described dish-style goes straight up to the flowing of the upper surface gas of machinery in circumference
Being uniform, what described dish-style went straight up to the lower surface contact of machinery is atmospheric pressure, and pressure ratio is more uniform, institute
State upward force act on described dish-style go straight up to machinery central shaft on.
Assuming that a diameter of sufficiently large circular flat of dish machinery, the suction in the aspirating flutes of the center of circle, center
Mechanism of qi start after, lift pump air inlet formed low-pressure area, air under atmospheric pressure, lift pump
The constantly air in draw inlet mouth upper surface space, air constantly pours in suction inlet, enters into lift pump
In, and then compressed, after gas compressed reaches requirement pressure, enter in air storage chamber, gas storage
Indoor compressed air, stagnation pressure is by paBring up to p0, it is stored in voltage stabilizing in air storage chamber.Through one section time
Between suction, air enters before aspirating unit and just rotates, and air is threaded in air inlet, forms whirlpool,
The center in whirlpool is under the effect of the centrifugal force rotated, and pressure, temperature, density reduce, internal steam
May condense.Air enters air entry at faster speed, for meeting the continuous of flow, and the flow of import
Equal to the flow in each cross section, whirlpool, owing to flow velocity is accelerated, form a vertical vortex.
While center vortex is formed, have been filled with the air of High Voltage in air storage chamber, now, will join
The valve of logical jet pipe is opened, and jet pipe and air storage chamber UNICOM, the pressure-air in air storage chamber will enter jet pipe
Contraction section in, nozzle exit and atmosphere, atmospheric pressure is the back-pressure of jet pipe, and air-flow passes through jet pipe
Venturi, overcomes the retardance of back-pressure, enters into the expansion segment of jet pipe, according to aerodynamics fundamental equation,
When air-flow is by venturi, form sonic flow at venturi, when this condition meets, at expansion segment, just can shape
Becoming supersonic flow, at the expansion segment of jet pipe, as velocity coeffficient λ ＞ 1, static pressure p declines, and static temperature T drops
Low, local density p also can reduce, and the pressure potential of air-flow is changed into kinetic energy greatly.Again through spray
The extension of pipe, enters atmospheric region, if it is assumed that before supersonic flow enters into the extension of jet pipe, static pressure p1
Less than atmospheric pressure pa, the two sides of extension are Gu Bi, and fluid is when wall flows, adherent, more leans on
Near wall, flow velocity is the biggest, and does not separates.The wall attachment effect of air-flow, another both sides are air, and air is pressed into
For Nozzle Flow state back-pressure condition, at the starting point of extension, nozzle exit, shock wave to be formed, gas
Flow and compressed by the pressure of shock wave, it is achieved p=paThe rear not parallel Gu Bi in air current flow direction, has one to Gu Bi
Angle of impingement, forms shock wave again, and travel direction adjusts, p ＞ pa, for meeting atmospheric pressure boundary condition, need
Expanding, form dilatational wave, dilatational wave clashes into Gu Bi row again and expands, and meets on flow direction parallel solid
Wall, p ＜ pa, external boundary, meet air p=pa, then form shock wave.Now flow to consolidating of the second jet pipe
Wall, this Gu Bi is convex surface, Yi Pu-step principle, and air-flow row again expands, and after dilatational wave clashes into shock wave, cuts
Weak shock intensity reflection is still dilatational wave.The air-flow of the first jet pipe, on the Gu Bi border of the second jet pipe,
P ＜ p after twice expansiona, it is in the external boundary of the second jet pipe, becomes the boundary condition of the second jet pipe---
Back-pressure, this back-pressure, be not the most the first jet pipe atmospheric pressure be the situation of back-pressure, be less than atmospheric pressure,
Air-flow in second jet pipe, although the flow properties identical with the first jet pipe, but the change of back-pressure condition,
The air-flow in the second jet pipe is made to be easier to flow out, and to Flow Field outside---the air-flow of the first jet pipe, impose injection,
And accelerate the flowing of Flow Field outside air-flow, naturally just reduce the static pressure of Flow Field outside air-flow.Equally when the second jet pipe
Airflow passes three jet pipe time, the air-flow static pressure of the second jet pipe becomes the back-pressure of the 3rd nozzle gas flow,
The air-flow of three jet pipe ejections imposes injection to the second nozzle gas flow equally.In above-mentioned Supersonic Flow is analyzed
All the time following oblique shock wave through Gu Bi reflection is still oblique shock wave, is dilatational wave through free boundary, intersects oblique shock wave
It it is still oblique shock wave.Dilatational wave is still dilatational wave through Gu Bi, is oblique shock wave through free boundary, meets oblique shock wave still
For dilatational wave, crossing dilatational wave is still dilatational wave.
So, during several jet pipes of dish wing periphery jet-stream wind circulation one circle simultaneously, the air-flow of previous jet pipe
For the low pressure Flow Field outside of local jet pipe, and local jet pipe imposes injection to previous nozzle gas flow, and injection is just
Accelerate the flow velocity of peripheral air stream, reduce the static pressure of peripheral air stream, make the air-flow of local jet pipe be easier to flow out,
In addition air-flow has an attached wall attribute, each nozzle gas flow around the central shaft of the dish wing move in a circle and not
Can separate, and atmospheric pressure is pushed to external boundary, atmospheric pressure is no longer the back-pressure of each jet pipe spout, spray
While pipe ejection air-flow, just the air-flow of external boundary being pushed open, the space of peripheral air stream is accounted for by spout air-flow
According to, the air-flow that whole dish wing space is sprayed by jet pipe occupies, due to low back-pressure, and attached wall, ultrasonic
Jet flow, despite friction and eddy loss, makes supersonic airstream quickly slow down into subsonic flow,
But the static pressure of dish alar wall face air-flow is still far below atmospheric pressure.The jet pipe joining place of circumference array forms salient angle,
Make spout stream be expansion state when flowing out spout, necessarily form Prandtl-Meyer flow.
In rotary motion under the influence of centrifugal force, radial motion to be produced, so producing for fluid micellar
Coriolis power.Coriolis power and angular velocity of rotation and diametrically speed are directly proportional, centrifugal force and circumference
Square being directly proportional and be inversely proportional to radius of speed, the peripheral speed near spout fluid micellar maximum and half
Footpath is minimum, and relative radial velocity is the most maximum, and peripheral speed is the most maximum, so the fluid micellar of nozzle
Suffered centrifugal force and Coriolis power are maximum, and two power anabolic effect results are all strong by rotating fluid
Extrapolate to the radial direction away from center of rotation in power ground.The Flow Field outside current density making nozzle is thinner,
Pressure is lower, and the back-pressure of spout stream is the lowest.Back-pressure reduces, by adjustable jet tube throatpiston, and can
The flow velocity making spout stream is bigger.Flow velocity is big, and centrifugal force is the biggest, and back-pressure is lower, and low back-pressure also constitutes fluid
The centripetal force moved in a circle.Meanwhile, owing to extrapolation makes the flow channel of air-flow become narrow, gas
Stream is in order to meet the continuous of flowing, and the flowing slowing down into subsonic gas already must accelerate flowing, from
So the pressure of flowing is just made to reduce.Thus dynamic the most constantly exercising result, dish wing upper surface forms large area
Low-pressure area.
Air-flow is in rotary motion, and radial velocity gradient causes friction and vortex, and deep fluid is micro-
The mechanical power loss of group is very big, and speed reduces, and pressure improves, and is atmospheric pressure at the edge of rotational flow field,
When the pressure sum that static pressure p and centrifugal force produce is equal to atmospheric pressure, rotational flow field is not in extrapolation, with this
Constitute rotational flow and free air boundary face.Arriving this, the mechanical power loss of fluid micellar is very big, its
Energy loss almost all is changed into heat, and the fluid temperature (F.T.) of whole turn generally improves, and connects with air
On the interface touched, temperature rise is the highest, and ambient atmosphere is under the drive of rotary interface, also rotates, but turns
Speed is the lowest, and it is static for can being approximately considered, and temperature is also basically unchanged, the temperature of rotational flow field and big temperature
Degree is compared and is defined the temperature difference, and under the effect of the temperature difference, fluid micellar rises, and temperature is the highest, the rate of climb
The biggest, fluid rises, and makes dish wing upper surface current density thinner, and pressure is lower.
While fluid micellar is heated rising, the steam of condensation becomes steam and rises, such dish wing
The air-flow of outer rim will spiral escalation, just rotating flow rise while, by viscosity and ejector action,
Making the air on external boundary also followed by rotation to rise, and center is under suction inlet effect, air-flow is
At the spiral double bubble streams declined.Here we can guess, at the extensional flow district pressure near spout
Minimum, low pressure, attract flowing to outer district of coboundary air-flow, this fraction does not pass through suction inlet,
It is inhaled into from above, under the ejector action of the radial flow rotated, from the epitaxial region of minor radius to external boundary
Flowing, causes the accumulation of air-flow, under the action of heat, follows external boundary fluid and rise and rise.
The present invention provides a kind of dish-style to go straight up to machinery, at the upper surface of a sufficiently large flat box-like object,
There is a cylindricality round platform projection center, and round platform center has under circular suction road, aspirating unit and connects lift pump,
The shell of lift pump has output channel to be connected with air storage chamber 3, and air vent outputed by air storage chamber 3.At round platform
The intersection top passed through mutually in lower edge and dish wing box shape face, along the tangent line of intersection, circumference is arranged several super
The exhaustor UNICOM of sonic nozzle 4, the air inlet of jet pipe and air storage chamber 3.Each air vent and each institute
State and between the air inlet of jet pipe, be provided with a valve.The present invention is without propeller, rotor and accurate override machine
Tool, simple in construction, lightweight；Compared with the helicopter such as propeller, rotor, unit capacity obtains
Climbing power big；Simple in construction, moving component is few, it is easy to ensure safe flight；Need not runway, ground
Face, the water surface, desert, grassland, marsh, highway landing, can realize inorganic field aerial；Deadly condition machine
Group personnel parachute jumping can realize；This version and operation principle can be used for the multiple flight machinery with lift-off,
There is extensive use.
Although embodiment of the present invention are disclosed as above, but it is not restricted to description and embodiment party
Listed utilization in formula, it can be applied to various applicable the field of the invention completely, for being familiar with ability
For the personnel in territory, be easily achieved other amendment, therefore without departing substantially from claim and etc. homotype
Enclosing under limited general concept, the present invention is not limited to specific details and shown here as the figure with description
Example.
Claims (9)
1. dish-style goes straight up to a machinery, and including dish body and boss, described dish body is flat round box knot
Structure, described boss is arranged on the center of described dish body upper surface, and it is circular that the center of described boss is provided with one
Aspirating flutes, it is characterised in that also include:
Lift pump, it is arranged on the bottom in described circular suction groove, and the shell of described lift pump is arranged
There is output channel,
Air storage chamber, it is arranged on described dish body lower surface, curved curved surface, is connected with described output channel,
And it is provided with some air vents,
Supersonic nozzle, the supersonic nozzle equal with described air vent quantity is uniformly arranged on described dish body
With the top of the intersection of the lower edge of described boss, the tangent line circumference head and the tail misconnection along described intersection is divided
Cloth,
Extension, described extension is arranged on each supersonic nozzle and is positioned at the position outside described boss
Putting, the outlet of described supersonic nozzle highlights relative to round platform with extension, and the lower edge at described round platform is formed
Zigzag is protruding,
Valve, is provided with a valve between the air inlet of each air vent and each described jet pipe.
2. dish-style as claimed in claim 1 is gone straight up in machinery, and described supersonic nozzle is Laval nozzle,
And number is more than three.
3. dish-style as claimed in claim 1 is gone straight up in machinery, the puff prot cross section of described supersonic nozzle
For square or circular.
4. dish-style as claimed in claim 1 is gone straight up in machinery, and the tube wall curved surface of described supersonic nozzle is
CV Surf.
5. dish-style as claimed in claim 1 is gone straight up in machinery, the outline of described extension transversal
Face is square, and has four sidewalls, including lower horizontal side wall, upper horizontal side wall, interior vertical sidewall and
Outer vertical sidewall, described outer vertical sidewall is tangent with circumference baseline, and point of contact is positioned at described supersonic nozzle
The corresponding position of air inlet, the interior vertical sidewall of described outer vertical sidewall and previous supersonic nozzle
Give the puff prot position of described supersonic nozzle mutually.
6. dish-style as claimed in claim 1 is gone straight up in machinery, described lift pump be axial-flow type lift pump or
Centrifugal aspirator.
7. dish-style as claimed in claim 1 is gone straight up in machinery, and described dish-style goes straight up to the upper surface of machinery
Air motion, the upper surface going straight up to machinery in described dish-style forms low-pressure area, and described dish-style goes straight up to machinery
The air pressure of lower surface is the atmospheric pressure being in geo-stationary, and described dish-style goes straight up to upper surface and the following table of machinery
Face forms pressure differential, and the integration of described pressure differential is upward force, is i.e. outside described dish-style is gone straight up to suffered by machinery
Making a concerted effort of power, is i.e. that described dish-style goes straight up to mechanical lift.
8. dish-style as claimed in claim 7 is gone straight up in machinery, and the source of described low-pressure area includes:
The suction force of described lift pump acts on described dish-style and goes straight up to the air in machinery overhead, makes air obtain
The momentum declined, meanwhile, the upper surface going straight up to machinery in described dish-style forms low-pressure area；
The air-flow of described jet pipe injection is lowpressure stream when the exit position of described jet pipe, rotated centrifugal
Under the effect of power, described lowpressure stream is pushed to described dish-style and goes straight up to the outer rim of machinery, due to attached wall characteristics, patch
The flow velocity of the air-flow that nearly described dish-style goes straight up to machinery upper surface is higher so that described dish-style goes straight up to the upper of machinery
Surface forms low-pressure area；
Described lowpressure stream is when the outer rim flowing of the upper surface that described dish-style goes straight up to machinery, because of velocity gradient
Producing friction and vortex, described friction and vortex and produce loss generation heat, described heat makes described dish-style
The temperature of the upper surface and described lowpressure stream of going straight up to machinery raises, and causes described lowpressure stream to rise, described dish
Formula goes straight up to the upper surface rarefaction of air of machinery, forms low-pressure area；
Described dish-style go straight up to machinery upper surface outer rim air-flow rise time, described vortex makes center
Air is thinner, exacerbates the Doenward flow of the air of described center, the air of described center
Flow velocity increases, flow increases, and the downward momentum of the air of described center increases, described center
The reaction force acts of air goes straight up to the air-flow of the outer rim of the upper surface of machinery in described dish-style, improves institute
Stating the rate of climb of air-flow of outer rim that dish-style goes straight up to the upper surface of machinery, described dish-style goes straight up to the upper of machinery
The pressure on surface reduces further.
9. dish-style as claimed in claim 1 is gone straight up in machinery, and described dish-style goes straight up to the upper surface gas of machinery
The flowing of body is uniform in circumference, and what described dish-style went straight up to the lower surface contact of machinery is atmospheric pressure, pressure
Force rate is more uniform, and upward force acts on described dish-style and goes straight up on the central shaft of machinery.
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| CN104773285A (en) * | 2015-04-30 | 2015-07-15 | 张苑 | Supersonic nozzle arranging method |
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| CN101797980A (en) * | 2009-10-23 | 2010-08-11 | 陈久斌 | Ufo |
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