CN109533385A - Coaxial double-rotary wing pulp hub test model - Google Patents
Coaxial double-rotary wing pulp hub test model Download PDFInfo
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- CN109533385A CN109533385A CN201811333262.4A CN201811333262A CN109533385A CN 109533385 A CN109533385 A CN 109533385A CN 201811333262 A CN201811333262 A CN 201811333262A CN 109533385 A CN109533385 A CN 109533385A
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- China
- Prior art keywords
- pulp hub
- rotary wing
- coaxial double
- test model
- pulp
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Transportation (AREA)
- Aviation & Aerospace Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
This application provides a kind of coaxial double-rotary wing pulp hub test models, comprising: upper pulp hub and the interior shaft connecting with upper pulp hub, lower pulp hub and the outer shaft connecting with lower pulp hub；Interior shaft is connect with outer shaft, so that upper pulp hub is relatively rotatable to each other with lower pulp hub.
Description
Technical field
This application involves helicopter experimental technique fields, specifically provide a kind of coaxial double-rotary wing pulp hub test model.
Background technique
According to relativity principle, aircraft flies suffered air force in still air, stationary, empty with aircraft
Opposite direction is blown gas at a same speed, and the effect of the two is the same.But aircraft front face area is big, keeps front face area so big
Air-flow be equivalent to the speed of flight blow over come, power consumption is surprising.According to similarity principle, aircraft can be done
It at the small-scale model of geometric similarity, is mounted in wind-tunnel, the air velocity in wind-tunnel is made to reach certain value, carry out wind-tunnel examination
It tests, the air force of aircraft is acted on when can extrapolate practical flight according to test result.
It needs to make to act on the air force of coaxial double-rotary wing propeller hub during exploratory flight according to principles above
Make the small size structural model of coaxial double-rotary wing propeller hub, carries out wind tunnel test.
Summary of the invention
In order to solve the above-mentioned technical problem at least one, this application provides a kind of coaxial double-rotary wing pulp hub test model,
The interior shaft for including: upper pulp hub and being connect with the upper pulp hub, lower pulp hub and the outer shaft being connect with the lower pulp hub；Institute
It states interior shaft to connect with the outer shaft, so that the upper pulp hub is relatively rotatable to each other with the lower pulp hub.
According at least one embodiment of the application, annular groove is provided on the medial surface of the interior shaft, it is described outer
The annular protrusion matched with the annular groove is provided on the lateral surface of shaft, the interior shaft passes through with the outer shaft
The annular groove is connected with the annular protrusion.
According at least one embodiment of the application, annular protrusion is provided on the medial surface of the interior shaft, it is described outer
The annular groove matched with the annular protrusion is provided on the lateral surface of shaft, the interior shaft passes through with the outer shaft
The annular groove is connected with the annular protrusion.
According at least one embodiment of the application, it is arranged limited position mechanism in the interior shaft, it is described for preventing
Pulp hub fits with the lower pulp hub.
According at least one embodiment of the application, the upper pulp hub includes the first center piece, multiple first support arms, multiple
Pull rod, multiple first inclinators, the interior shaft are connect with first center piece, the multiple first support arm and the multiple
First inclinator is connect with first center piece, is arranged between the multiple first support arm and the multiple first inclinator
There is the multiple pull rod.
According at least one embodiment of the application, the quantity of the first support arm, the quantity of the pull rod, described first
Inclinator quantity is all the same.
According at least one embodiment of the application, the lower pulp hub includes the second center piece, multiple second support arms, multiple
Long draw, multiple short rods, multiple second inclinators, the outer shaft are connect with second center piece, and the multiple second
Support arm and the multiple second inclinator are connect with second center piece, the multiple second support arm and the multiple second
The multiple short rod is provided between inclinator, second center will be provided with more between the multiple second inclinator
A long draw.
It is the quantity of the second support arm, the quantity of the long draw, described short according at least one embodiment of the application
The quantity of pull rod, the second inclinator quantity are all the same.
According at least one embodiment of the application, the position-limit mechanism is casing.
According at least one embodiment of the application, the internal diameter of described sleeve pipe is less than the outer diameter of the outer shaft.
The interior outer shaft of the coaxial double-rotary wing propeller hub model of the application can be reversed rotation, upper propeller hub model and lower propeller hub mould
Type is connect with interior shaft and outer shaft respectively, during the test upper propeller hub model and lower propeller hub model can respectively clockwise and
Rotation counterclockwise, so as to simulate the actual use operating condition of coaxial double-rotary wing.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of coaxial double-rotary wing pulp hub model provided by the embodiments of the present application；
Fig. 2 is the assembling schematic diagram of interior shaft and outer shaft provided by the embodiments of the present application；
Fig. 3 is the structural schematic diagram of upper pulp hub provided by the embodiments of the present application；
Fig. 4 is the structural schematic diagram of lower pulp hub provided by the embodiments of the present application.
Wherein:
10, upper pulp hub；11, the first center piece；12, first support arm；13, pull rod；14, the first inclinator；20, interior shaft；
30, lower pulp hub；31, the second center piece；32, second support arm；33, long draw；34, short rod；35, the second inclinator；40, outer to turn
Axis；50, annular groove；60, annular protrusion；70, position-limit mechanism.
Specific embodiment
The application is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related application, rather than the restriction to this application.It also should be noted that in order to
Convenient for description, part relevant to the application is illustrated only in attached drawing.
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The application is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It should be noted that in the description of the present application, term " center ", "upper", "lower", "left", "right", "vertical",
The direction of the instructions such as "horizontal", "inner", "outside" or the term of positional relationship are direction based on the figure or positional relationship, this
It is intended merely to facilitate description, rather than indication or suggestion described device or element must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as the limitation to the application.In addition, term " first ", " second " are only used for describing
Purpose is not understood to indicate or imply relative importance.
In addition it is also necessary to explanation, in the description of the present application unless specifically defined or limited otherwise, term " peace
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.To those skilled in the art, it can understand that above-mentioned term exists as the case may be
Concrete meaning in the application.
Fig. 1 is the structural schematic diagram of coaxial double-rotary wing pulp hub model provided by the embodiments of the present application.
As shown in Figure 1, coaxial double-rotary wing pulp hub test model include upper pulp hub 10 and connect with upper pulp hub 10 in turn
Axis 20, lower pulp hub 30 and the outer shaft 40 connecting with lower pulp hub 30, interior shaft 20 is connect with outer shaft 40, so that upper pulp hub 10
It is relatively rotatable to each other with lower pulp hub 30.
In wind tunnel test, so that upper pulp hub 10 and lower pulp hub 30 relatively rotate, for example, upper pulp hub 10 rotates clockwise,
Lower pulp hub 30 to rotate counterclockwise, to simulate the air force on true coaxial double-rotary wing.
Referring to fig. 2, optionally, annular groove 50 is provided on the medial surface of interior shaft 20, on the lateral surface of outer shaft 40
It is provided with the annular protrusion 60 matched with annular groove 50, interior shaft 20 passes through annular groove 50 and convex annular with outer shaft 40
60 connections are played, to prevent pulp hub 10 and lower pulp hub 30 in relative rotational motion, the axial direction in interior outer shaft occurs
On displacement.
It is of course also possible to be to be provided with annular protrusion 60 on the medial surface of interior shaft 20, set on the lateral surface of outer shaft 40
It is equipped with the annular groove 50 for rising and matching with convex annular 60, interior shaft 20 passes through annular groove 50 and annular protrusion with outer shaft 40
60 connections.
Annular groove 50 is identical with the quantity of annular protrusion 60, and annular groove 50 can be one, is also possible to two, also
Can be it is multiple, be specifically arranged how many, can determine according to actual needs.
With continued reference to Fig. 1, optionally, to prevent upper pulp hub 10 and lower pulp hub 30 in relative rotational motion, collide
Contact, is arranged limited position mechanism 70 in interior shaft 20, thus to prevent upper pulp hub 10 from fitting with lower pulp hub 30.Optionally,
Position-limit mechanism 70 is casing, and the internal diameter of the casing is less than the outer diameter of outer shaft 40.
Referring to Fig. 3, optionally, upper pulp hub 10 includes the first center piece 11, multiple first support arms 12, multiple pull rods 13, more
A first inclinator 14, interior shaft 20 are connect with the first center piece 11, and multiple first support arms 12 and multiple first inclinators 14 are equal
It is connect with the first center piece 11, multiple pull rods 13 is provided between multiple first support arms 12 and multiple first inclinators 14.It is optional
Ground, the quantity of first support arm 12, the quantity of pull rod 13, the amount of the first inclinator 14 number is all the same and is three.
Referring to fig. 4, optionally, lower pulp hub 30 include the second center piece 31, multiple second support arms 32, multiple long draws 33,
Multiple short rods 34, multiple second inclinators 35, outer shaft 40 are connect with the second center piece 31, multiple second support arms 32 and multiple
Second inclinator 35 is connect with the second center piece 31, is provided between multiple second support arms 32 and multiple second inclinators 35 more
A short rod 34 is provided with multiple long draws 33 between second center piece 31 and multiple second inclinators 35.Optionally, second
The quantity of arm 32, the quantity of long draw 33, the quantity of short rod 34, the quantity of the second inclinator 35 are all the same and are three.
The above, the only specific embodiment of the application, it is apparent to those skilled in the art that,
For convenience of description and succinctly, the system, module of foregoing description and the specific work process of unit can refer to preceding method
Corresponding process in embodiment, details are not described herein.It should be understood that the protection scope of the application is not limited thereto, it is any to be familiar with
Those skilled in the art within the technical scope of the present application, can readily occur in various equivalent modifications or substitutions,
These modifications or substitutions should all cover within the scope of protection of this application.
Claims (10)
1. a kind of coaxial double-rotary wing pulp hub test model characterized by comprising
Upper pulp hub (10) and the interior shaft (20) being connect with the upper pulp hub (10), lower pulp hub (30) and with the lower pulp hub
(30) outer shaft (40) connected；
The interior shaft (20) connect with the outer shaft (40), so that the upper pulp hub (10) and the lower pulp hub (30) can
It relatively rotates.
2. coaxial double-rotary wing pulp hub test model according to claim 1, which is characterized in that the interior shaft (20) it is interior
It is provided on side annular groove (50), is provided on the lateral surface of the outer shaft (40) and matches with the annular groove (50)
The annular protrusion (60) of conjunction, the interior shaft (20) and the outer shaft (40) pass through the annular groove (50) and the annular
Raised (60) connection.
3. coaxial double-rotary wing pulp hub test model according to claim 1, which is characterized in that the interior shaft (20) it is interior
It is provided on side annular protrusion (60), is provided on the lateral surface of the outer shaft (40) and plays matching with the convex annular (60)
The annular groove (50) of conjunction, the interior shaft (20) and the outer shaft (40) pass through the annular groove (50) and the annular
Raised (60) connection.
4. coaxial double-rotary wing pulp hub test model according to claim 2 or 3, which is characterized in that the interior shaft (20)
On be arranged limited position mechanism (70), for preventing the upper pulp hub (10) from fitting with the lower pulp hub (30).
5. coaxial double-rotary wing pulp hub test model according to claim 4, which is characterized in that the upper pulp hub (10) includes
First center piece (11), multiple first support arms (12), multiple pull rods (13), multiple first inclinators (14), the interior shaft
(20) connect with first center piece (11), the multiple first support arm (12) and the multiple first inclinator (14) with
First center piece (11) connection, is provided between the multiple first support arm (12) and the multiple first inclinator (14)
The multiple pull rod (13).
6. coaxial double-rotary wing pulp hub test model according to claim 5, which is characterized in that the first support arm (12)
Quantity, the quantity of the pull rod (13), the amount of first inclinator (14) number are all the same.
7. coaxial double-rotary wing pulp hub test model according to claim 4, which is characterized in that the lower pulp hub (30) includes
Second center piece (31), multiple second support arms (32), multiple long draws (33), multiple short rods (34), multiple second inclinators
(35), the outer shaft (40) connect with second center piece (31), the multiple second support arm (32) and the multiple
Two inclinators (35) are connect with second center piece (31), the multiple second support arm (32) and the multiple second inclination
It is provided between device (35) the multiple short rod (34), second center piece (31) and the multiple second inclinator (35)
Between be provided with multiple long draws (33).
8. coaxial double-rotary wing pulp hub test model according to claim 5, which is characterized in that the second support arm (32)
Quantity, the quantity of the long draw (33), the quantity of the short rod (34), the quantity of second inclinator (35) are homogeneous
Together.
9. coaxial double-rotary wing pulp hub test model according to claim 4, which is characterized in that the position-limit mechanism (70) is
Casing.
10. coaxial double-rotary wing pulp hub test model according to claim 9, which is characterized in that the internal diameter of described sleeve pipe is small
Outer diameter in the outer shaft (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811333262.4A CN109533385A (en) | 2018-11-09 | 2018-11-09 | Coaxial double-rotary wing pulp hub test model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811333262.4A CN109533385A (en) | 2018-11-09 | 2018-11-09 | Coaxial double-rotary wing pulp hub test model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109533385A true CN109533385A (en) | 2019-03-29 |
Family
ID=65846584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811333262.4A Pending CN109533385A (en) | 2018-11-09 | 2018-11-09 | Coaxial double-rotary wing pulp hub test model |
Country Status (1)
| Country | Link |
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| CN (1) | CN109533385A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104908976A (en) * | 2015-05-19 | 2015-09-16 | 北京航空航天大学 | Simple rotor mechanism of coaxial dual-rotor helicopter test stand |
| CN205216129U (en) * | 2015-12-09 | 2016-05-11 | 河南科技学院 | Multi -functional wushu equipment |
| US20170210480A1 (en) * | 2016-01-27 | 2017-07-27 | Sikorsky Aircraft Corporation | Rotor systems for rotorcraft |
| CN207296338U (en) * | 2017-10-25 | 2018-05-01 | 咸宁职业技术学院 | One kind builds work elevating scaffold |
| CN108657448A (en) * | 2018-06-04 | 2018-10-16 | 北京海空行科技有限公司 | A kind of electronic coaxial unmanned helicopter transmission system |
-
2018
- 2018-11-09 CN CN201811333262.4A patent/CN109533385A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104908976A (en) * | 2015-05-19 | 2015-09-16 | 北京航空航天大学 | Simple rotor mechanism of coaxial dual-rotor helicopter test stand |
| CN205216129U (en) * | 2015-12-09 | 2016-05-11 | 河南科技学院 | Multi -functional wushu equipment |
| US20170210480A1 (en) * | 2016-01-27 | 2017-07-27 | Sikorsky Aircraft Corporation | Rotor systems for rotorcraft |
| CN207296338U (en) * | 2017-10-25 | 2018-05-01 | 咸宁职业技术学院 | One kind builds work elevating scaffold |
| CN108657448A (en) * | 2018-06-04 | 2018-10-16 | 北京海空行科技有限公司 | A kind of electronic coaxial unmanned helicopter transmission system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190329 |
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| RJ01 | Rejection of invention patent application after publication |