CN101092971A - Composite materials for fan blade with cavity - Google Patents
Composite materials for fan blade with cavity Download PDFInfo
- Publication number
- CN101092971A CN101092971A CN 200710025293 CN200710025293A CN101092971A CN 101092971 A CN101092971 A CN 101092971A CN 200710025293 CN200710025293 CN 200710025293 CN 200710025293 A CN200710025293 A CN 200710025293A CN 101092971 A CN101092971 A CN 101092971A
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- blade
- fan
- cavity
- fan blade
- glass fiber
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Abstract
This invention relates to a cavity fan blade of a composite material including an upper shell and a lower shell deducted to each other to form a cavity, in which a reinforced beam is arranged along a variable axis, a lead counterweight block is set at the outer end of the beam and glass fibers are winded around the beam to connect the counterweight block with a root metal joint, the two shells of the blade are molded by molding, glued glass fiber beams are winded around it in wet, then the entire blade is heated, pressed and solidified to a mold. The main body of the fan blade includes an upper shell and a lower shell molded by paper honeycomb and glass fiber cloth and so it is lighter than ordinary rotary-wing blades.
Description
Technical field
The present invention relates to a kind of ducted fan blade.
Background technique
Ducted fan is as a kind of Pneumatic actuator that produces lift or thrust, has characteristics such as compact structure, running safety, ambient noise are low.Said ducted fan generally extends out circular duct by propeller cavitation or minor diameter lifting airscrew and constitutes, propeller cavitation is owing to reason such as rotating speed height, lifting surface solidity be little, its lift efficient is not as rotor, and in order to cooperate the Flight Vehicle Design needs, even need to adopt the design proposal of multi-disc rotor blade.But the duct inner space is limited, must limit rotor blade flapping action up and down, produce big centrifugal force when needing the blade rotation, rely on centrifugal action to hold rotor blade, make it flapping action significantly up and down, therefore adopt the scheme of multi-disc rotor blade if desired, then whole rotor system weight will be bigger.Conventional rotor blade is a solid construction, is evenly distributed by blade root to end of blade, and the center of gravity of full wafer blade is substantially near the blade stage casing.If under the constant prerequisite of integrated plate blade weight, it closes center of gravity, and then centrifugal force is big more the closer to blade tip.Otherwise, if can make the integrated plate blade center of gravity, keeping under the constant prerequisite of centrifugal force the closer to blade tip, then its gross weight can be light relatively.
Summary of the invention
The technical problem to be solved in the present invention is: a kind of composite materials for fan blade with cavity design proposal is provided, this blade closes center of gravity near blade tip, guaranteeing to produce big centrifugal force, under the prerequisite of limit blade flapping action scope, the relative pure helicopter rotor blade of its weight is lighter, thereby makes it more to be applicable to the fan system that constitutes the multi-disc blade.
For solving the problems of the technologies described above, composite materials for fan blade with cavity of the present invention, it is characterized in that comprising fan upper shell, fan blade lower shell body, the plumbous balancing weight of end of blade, buttress brace, glass fiber bundle, blade root metal joint, wherein the mutual gluing of fan blade upper shell and fan blade lower shell body constitutes the fan cavity housing of composite material sandwich structure, this cavity enclosure interior is along displacement axis arranged buttress brace, buttress brace is connected in the plumbous balancing weight of end of blade, glass fiber bundle along the buttress brace outer felt around, end of blade balancing weight and blade root metal joint are coupled together.The fan upper shell of composite material sandwich structure and lower shell body are by papery honeycomb and glass fiber cloth compression molding.Thereby fan blade constitutes the fan system of multi-disc blade thus, and is lighter than the system weight that adopts conventional configuration rotor blade.
Description of drawings
Fig. 1 composite materials for fan blade with cavity structural representation
The A-A sectional view of Fig. 2 Fig. 1
Label title among the figure:
1. plumbous balancing weight 4. buttress braces of fan blade upper shell 2. fan blade lower shell bodys 3. end of blade 5. glass fiber bundles 6. blade root metal joints
Embodiment
By accompanying drawing 1,2 as can be known, this composite materials for fan blade with cavity main body is that the upper shell 1 of papery honeycomb and glass fiber cloth compression molding and lower shell body 2 gummed that interlocks constitutes, and inside is cavity.Along a paulownia wood of displacement axis arranged buttress brace 4, buttress brace 4 outer ends, promptly blade tip is arranged the plumbous balancing weight 3 of end of blade, makes whole center of gravity near blade tip, weight efficiency height.The big centrifugal force that produces for opposing blade when rotation balancing weight 3, with high strength glass fiber bundle 5 along buttress brace 4 outer felt around, balancing weight 3 and blade root metal joint 6 are coupled together.Lower shell body 1 and 2 compression molding in advance on the blade, glass fiber bundle 5 gum dipping wet process are twined, then whole blade heat, the cure under pressure moulding.
By accompanying drawing 1,2 as can be known, this composite materials for fan blade with cavity main body is the upper shell 1 and the lower shell body 2 of papery honeycomb and glass fiber cloth compression molding, its weight is quite light, and main weight is end of blade lead counterweight 3, thereby its integrated plate blade center of gravity is near the plumbous counterweight of end of blade 3 places, guaranteeing to produce enough big centrifugal force, limit under the prerequisite of its flapping action, its weight is lighter than conventional configuration rotor blade.Thereby more be applicable to and constitute the fan system that the multi-disc blade is formed.
Claims (2)
1, a kind of composite materials for fan blade with cavity, it is characterized in that comprising fan upper shell (1), fan blade lower shell body (2), the plumbous balancing weight (3) of end of blade, buttress brace (4), glass fiber bundle (5), blade root metal joint (6), wherein the mutual gluing of fan blade upper shell (1) and fan blade lower shell body (2) constitutes the fan cavity housing of composite material sandwich structure, this cavity enclosure interior is along displacement axis arranged buttress brace (4), buttress brace (4) is connected in the plumbous balancing weight (3) of end of blade, glass fiber bundle (5) along buttress brace (4) outer felt around, end of blade balancing weight (3) and blade root metal joint (6) are coupled together.
2, composite materials for fan blade with cavity according to claim 1 is characterized in that the fan upper shell (1) of composite material sandwich structure and lower shell body (2) are by papery honeycomb and glass fiber cloth compression molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100252939A CN100494695C (en) | 2007-07-20 | 2007-07-20 | Composite materials cavity fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100252939A CN100494695C (en) | 2007-07-20 | 2007-07-20 | Composite materials cavity fan blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101092971A true CN101092971A (en) | 2007-12-26 |
| CN100494695C CN100494695C (en) | 2009-06-03 |
Family
ID=38991368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100252939A Expired - Fee Related CN100494695C (en) | 2007-07-20 | 2007-07-20 | Composite materials cavity fan blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100494695C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011044750A1 (en) * | 2009-10-14 | 2011-04-21 | Huang Zhengming | Wind turbine blade structure, processing and forming method thereof |
| CN101649844B (en) * | 2009-09-09 | 2011-10-19 | 北京戴诺新思动力技术有限公司 | Fan blade based on hollow metal/composite material structure |
| CN103253367A (en) * | 2013-04-25 | 2013-08-21 | 南京航空航天大学 | Composite material air propeller and preparation die and preparation method thereof |
| CN105485051A (en) * | 2015-09-29 | 2016-04-13 | 常州倍安特动力机械有限公司 | Fan for cooling generating device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105528342A (en) * | 2015-12-29 | 2016-04-27 | 科大讯飞股份有限公司 | Intelligent translation method and system in input method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3607305A1 (en) * | 1986-03-06 | 1987-09-10 | Messerschmitt Boelkow Blohm | DEVICE FOR BALANCING A ROTOR BLADE |
| FR2616409B1 (en) * | 1987-06-09 | 1989-09-15 | Aerospatiale | BLADE OF COMPOSITE MATERIALS AND MANUFACTURING METHOD THEREOF |
| CN2044658U (en) * | 1988-11-07 | 1989-09-20 | 上海化工机械二厂 | Fan blade made of hollow glass steel |
| JPH03104799A (en) * | 1989-09-20 | 1991-05-01 | Fuji Heavy Ind Ltd | Manufacture of composite material blade |
| US5304038A (en) * | 1992-01-03 | 1994-04-19 | Bird-Johnson Company | Built-up marine propeller blade balancing |
| CN2205357Y (en) * | 1994-05-11 | 1995-08-16 | 黄善宋 | Combined propeller |
| US5720597A (en) * | 1996-01-29 | 1998-02-24 | General Electric Company | Multi-component blade for a gas turbine |
| RU2115594C1 (en) * | 1996-10-14 | 1998-07-20 | Акционерное общество открытого типа Московский вертолетный завод им.М.Л.Миля | Method of manufacture of blades and spars for flying vehicle propellers and other articles from composite materials |
| FR2781196B1 (en) * | 1998-07-17 | 2000-09-15 | Eurocopter France | ROTOR BLADE OF A GIRAVION WITH A STATIC AND DYNAMIC BALANCING DEVICE AND A METHOD OF BALANCING A BLADE |
| DK175562B1 (en) * | 2002-03-19 | 2004-12-06 | Lm Glasfiber As | Wind turbine blade with carbon fiber tip |
-
2007
- 2007-07-20 CN CNB2007100252939A patent/CN100494695C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101649844B (en) * | 2009-09-09 | 2011-10-19 | 北京戴诺新思动力技术有限公司 | Fan blade based on hollow metal/composite material structure |
| WO2011044750A1 (en) * | 2009-10-14 | 2011-04-21 | Huang Zhengming | Wind turbine blade structure, processing and forming method thereof |
| CN103253367A (en) * | 2013-04-25 | 2013-08-21 | 南京航空航天大学 | Composite material air propeller and preparation die and preparation method thereof |
| CN105485051A (en) * | 2015-09-29 | 2016-04-13 | 常州倍安特动力机械有限公司 | Fan for cooling generating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100494695C (en) | 2009-06-03 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20170720 |