CN201632056U - Propeller of model plane - Google Patents
Propeller of model plane Download PDFInfo
- Publication number
- CN201632056U CN201632056U CN2010201222942U CN201020122294U CN201632056U CN 201632056 U CN201632056 U CN 201632056U CN 2010201222942 U CN2010201222942 U CN 2010201222942U CN 201020122294 U CN201020122294 U CN 201020122294U CN 201632056 U CN201632056 U CN 201632056U
- Authority
- CN
- China
- Prior art keywords
- blade
- wing
- model
- aerofoil profile
- propeller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 230000007704 transition Effects 0.000 abstract description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Images
Landscapes
- Toys (AREA)
Abstract
The utility model discloses a propeller of a model plane. The propeller comprises a propeller hub and blades, wherein, the blades take the shape of a torque arm; each section wing chord of each blade from the root to the tip is in a high-efficiency range; the wing section of the blade adopts a three-dimensional curve changeable wing section; all the wing sections of the propeller from the root to the tip adopt smooth and round transition; the root of the propeller adopts a high-lift drag ratio low-resistance wing section with relatively great thickness; the curvature of the wing on the middle section of the blade is large; the tip of the propeller is transited to adopt a low-resistance wing with relatively thin thickness, and is designed to adopt a wing tip taking the shape of an anti arrow; and the trailing edge of the propeller adopts a novel wing flap wing. Through the planar, wing-type and anti arrow-shaped wing tip design, the utility model improves the propeller efficiency, and can be more applicable for matching with a brushless motor to the model plane under different flying speeds.
Description
[technical field]
The utility model relates to a kind of screw, the model of an airplane screw that particularly a kind of efficient is high.
[background technology]
As everyone knows, properller carries out the high speed rotation under the driving of engine, and then produces pulling force, and the tractive aircraft flies forward.In flight course, screw is responsible for the power output of engine changed into and is hauled the effective power that aircraft advances, screw hauls aircraft and advances, to the aircraft work done, the merit that the unit interval internal propeller is done is the effective power of screw, and the ratio of screw effective power and engine output then is a propeller efficiency, and propeller efficiency is relevant with factors such as blade form, aerofoil profiles.Screw on the distance type model of an airplane of routine adopts the spacing design, and needle shape is used on the plane always, and the blade aerofoil profile often is a platybasic type, this dimensional airfoil simple in structure, but the tension coefficient of its generation is little; And the pitch of constant pitch airscrew is changeless, and the model of an airplane is difficult to all reach the efficient of the best under different flying speeds, fails to make full use of the new work engine of the existing model of an airplane and the power of brushless electric machine, exists inefficient shortcoming.
[utility model content]
The novel purpose of this full mold is: improve above-mentioned deficiency of the prior art, a kind of model of an airplane screw is provided, it improves propeller efficiency by the improvement of blade structures such as blade face shape and aerofoil profile, to cooperate the application of brushless electric machine on the different flying speeds of the model of an airplane better.
The technical solution of the utility model is achieved in that it comprises propeller hub and blade, and its improvements are: blade is for turning round the arm shape, blade root to each section wing chord of blade tip all in the high efficiency scope; Aerofoil profile adopts three-dimensional curve to change aerofoil profile, and blade root is to the steady rounding off of each aerofoil profile of blade tip, and blade root adopts the big high lift-drag ratio low-resistance aerofoil profile of relative thickness, and the aerofoil profile flexibility in blade stage casing is big, and blade tip transits to the low-resistance aerofoil profile of thin thickness;
In the above-mentioned model of an airplane screw, the trailing edge of described aerofoil profile is bent to form the wing flap aerofoil profile;
In the above-mentioned model of an airplane screw, blade tip is designed to anti-flechette-type wing tip;
In the above-mentioned model of an airplane screw, the aerofoil profile flexibility at place, blade stage casing to 80% is big;
In the above-mentioned model of an airplane screw, the aerofoil profile in blade stage casing adopts concavo-convex aerofoil profile;
In the above-mentioned model of an airplane screw, described screw is a double bladed paddle, and blade oppositely is arranged at the propeller hub both sides;
In the above-mentioned model of an airplane screw, described blade and propeller hub are one-body molded.
Screw than the existing distance type model of an airplane, the beneficial effects of the utility model are: screw is by plane, aerofoil profile and anti-flechette-type tip design, improve propeller efficiency, the application of better fit brushless electric machine under the different flying speeds of the model of an airplane.
[description of drawings]
Below in conjunction with accompanying drawing in detail concrete structure of the present utility model is described in detail
Fig. 1 is the perspective view of model of an airplane screw of the present utility model
The aerofoil profile at three different radii places contrast schematic diagram on Fig. 2 propeller blade
Among the figure: 1, propeller hub; 2, blade; 3, blade root; 4, blade tip; 5, aerofoil profile.
[specific embodiment]
As depicted in figs. 1 and 2, model of an airplane screw of the present utility model is a variable-pitch propeller, and screw in an embodiment is a double bladed paddle, and blade 2 is made and turned round the arm shape, and two blades 2 oppositely are arranged at propeller hub 1 both sides and one-body molded with propeller hub 4.Screw so its planar design rationally distributes under different linear velocities according to the blade face radius, makes blade root 3 arrive blade tip 4 chord lengths within higher operating efficiency scope, even every section wing chord is under optimum efficiency in the linear velocity difference of different blade faces radius.In the flight course, the linear velocity at blade root 3 places is little, and its resistance that is subjected to is less relatively, and the thickness at this place is thicker, can guarantee the intensity of blade 2, improves the service life of screw; The linear velocity at blade tip 4 places is big, and its resistance that is subjected to is relatively large, and the thin thickness at this place helps reducing resistance.The aerofoil profile 5 of blade 2 adopts three-dimensional curve to change aerofoil profile, blade root 3 arrives blade tip 4 by different airfoil profiles 5 smooth transitions, slurry root 3 adopts high lift-drag ratio low-resistance aerofoil profile, place, stage casing to 80% adopts the big concavo-convex aerofoil profile of flexibility, blade tip 4 transits to the low-resistance aerofoil profile, and reaching 2 of entire blade thus has bigger lift-drag ratio under the situation of different blade angles.The trailing edge of aerofoil profile 5 is bent to form the wing flap aerofoil profile, can further increase the pulling force of screw.Blade tip 4 is designed to anti-flechette-type wing tip, reducing blade tip 4 eddy current, thereby reduces resistance, help to strengthen the stability of flight, fly up more steady, effectively reduce noise simultaneously.Compare with similar screw, adopt above technology can make screw under same diameter, pitch and equal-wattage, produce bigger pulling force.
During making,, then,, produce the screw of different-diameter and pitch configuration again based on scan-data modeling volume production with the data of computer scanning model earlier with the wooden model that cuts and polish screw.The user can select the screw of respective diameters and pitch according to the flying speed of the aircraft that uses a model, to reach the highest service efficiency.Estimation equation is: H (rice)=60V (meter per second)/N (rev/min), H is estimation pitch in the formula, and V is an aircraft flight speed, and N is a revolution speed of propeller.
Described above only is preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to restriction of the present utility model.In technological thought category of the present utility model, various distortion and modification can appear, and the retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, all belong to the scope that the utility model is protected.
Claims (7)
1. model of an airplane screw, it comprises propeller hub and blade, it is characterized in that: blade is for turning round the arm shape, blade root to each section wing chord of blade tip all in the high efficiency scope; Aerofoil profile adopts three-dimensional curve to change aerofoil profile, and blade root is to the steady rounding off of each aerofoil profile of blade tip, and blade root adopts the big high lift-drag ratio low-resistance aerofoil profile of relative thickness, and the aerofoil profile flexibility in blade stage casing is big, and blade tip transits to the low-resistance aerofoil profile of thin thickness.
2. model of an airplane screw according to claim 1 is characterized in that: the trailing edge of aerofoil profile is bent to form the wing flap aerofoil profile.
3. model of an airplane screw according to claim 1 is characterized in that: blade tip is designed to anti-flechette-type wing tip.
4. model of an airplane screw according to claim 1 is characterized in that: the aerofoil profile flexibility at place, blade stage casing to 80% is big.
5. according to claim 1 or 4 described model of an airplane screws, it is characterized in that: the aerofoil profile in blade stage casing adopts concavo-convex aerofoil profile.
6. model of an airplane screw according to claim 1 is characterized in that: screw is a double bladed paddle, and blade oppositely is arranged at the propeller hub both sides.
7. model of an airplane screw according to claim 6 is characterized in that: blade and propeller hub are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201222942U CN201632056U (en) | 2010-02-09 | 2010-02-09 | Propeller of model plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201222942U CN201632056U (en) | 2010-02-09 | 2010-02-09 | Propeller of model plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201632056U true CN201632056U (en) | 2010-11-17 |
Family
ID=43076530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201222942U Ceased CN201632056U (en) | 2010-02-09 | 2010-02-09 | Propeller of model plane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201632056U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013004010A1 (en) * | 2011-07-04 | 2013-01-10 | 深圳市子轩玩具有限公司 | Multifunctional toy aircraft |
| CN106741825A (en) * | 2016-11-21 | 2017-05-31 | 西安三翼航空科技有限公司 | A kind of six rotor unmanned aircrafts |
| CN108945396A (en) * | 2018-03-30 | 2018-12-07 | 中山市朗宇模型有限公司 | propeller |
| CN109071006A (en) * | 2017-12-26 | 2018-12-21 | 深圳市大疆创新科技有限公司 | Propeller, Power Component and aircraft |
| CN110896625A (en) * | 2018-04-25 | 2020-03-20 | 深圳市大疆创新科技有限公司 | Screw, power component and aircraft |
| CN113002771A (en) * | 2021-03-26 | 2021-06-22 | 吉林大学 | Low-noise unmanned aerial vehicle rotor |
-
2010
- 2010-02-09 CN CN2010201222942U patent/CN201632056U/en not_active Ceased
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013004010A1 (en) * | 2011-07-04 | 2013-01-10 | 深圳市子轩玩具有限公司 | Multifunctional toy aircraft |
| CN106741825A (en) * | 2016-11-21 | 2017-05-31 | 西安三翼航空科技有限公司 | A kind of six rotor unmanned aircrafts |
| CN109071006A (en) * | 2017-12-26 | 2018-12-21 | 深圳市大疆创新科技有限公司 | Propeller, Power Component and aircraft |
| CN108945396A (en) * | 2018-03-30 | 2018-12-07 | 中山市朗宇模型有限公司 | propeller |
| CN110896625A (en) * | 2018-04-25 | 2020-03-20 | 深圳市大疆创新科技有限公司 | Screw, power component and aircraft |
| CN113002771A (en) * | 2021-03-26 | 2021-06-22 | 吉林大学 | Low-noise unmanned aerial vehicle rotor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201632056U (en) | Propeller of model plane | |
| CN103485973B (en) | A kind of pneumatic equipment blades with tip vane | |
| CN110466751A (en) | A kind of the high effective portable unmanned plane rotor structure and its design method of low noise | |
| CN102991658A (en) | Bionic propeller of ship | |
| CN203189332U (en) | Fan blade and fan | |
| CN208993923U (en) | Propeller, Power Component and unmanned vehicle | |
| CN107244400A (en) | A kind of branch type propeller blade | |
| CN109774962A (en) | A kind of shape design method of low noise propeller | |
| CN209192204U (en) | Propellers and Drones | |
| CN211107957U (en) | Blade Variation for a Trans-medium Vehicle | |
| CN100400375C (en) | Aerofoil with blunt tail edge | |
| CN206954495U (en) | New type propeller | |
| CN203515955U (en) | Thickened high-aerodynamic-performance wind turbine blade | |
| CN112918668A (en) | Rotor of rotor craft and rotor craft | |
| CN203001971U (en) | Carbon fiber propeller used on multi-rotor-wing ultralow-quantity unmanned pesticide spraying machine | |
| CN211364941U (en) | Rotor craft's paddle and rotor craft | |
| CN205738101U (en) | A kind of circumference wing Anti-gravity device and levitation device | |
| WO2023108817A1 (en) | Propeller, power assembly, and aircraft | |
| WO2021043330A1 (en) | Propeller and aircraft | |
| CN109751182B (en) | Novel mechanical active deformation blade for vertical axis wind turbine | |
| WO2022110942A1 (en) | Apparatus and method for converting reciprocating motion into continuous rotation and application | |
| CN201786744U (en) | Blades of cooling fan of engine | |
| CN205131662U (en) | Compound rotatory wing lift arrangement | |
| CN205131653U (en) | Double -oar composite wing | |
| CN210162243U (en) | Propeller blade appearance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: XIANNING XINGYAOHUA MODEL CO., LTD. Assignor: Shenzhen Xingyaohua Industrial Co., Ltd. Contract record no.: 2013440020038 Denomination of utility model: Method and device for measuring length and thread pitch of propeller paddle of model aeroplane Granted publication date: 20101117 License type: Exclusive License Record date: 20130225 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20130216 Decision number of declaring invalidation: 20049 Granted publication date: 20101117 |