CN105480311A - Aerodynamic kit for improving control stability of racing car and design method thereof - Google Patents
Aerodynamic kit for improving control stability of racing car and design method thereof Download PDFInfo
- Publication number
- CN105480311A CN105480311A CN201510950228.1A CN201510950228A CN105480311A CN 105480311 A CN105480311 A CN 105480311A CN 201510950228 A CN201510950228 A CN 201510950228A CN 105480311 A CN105480311 A CN 105480311A
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- China
- Prior art keywords
- wing
- empennage
- racing car
- fin
- external member
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D37/00—Stabilising vehicle bodies without controlling suspension arrangements
- B62D37/02—Stabilising vehicle bodies without controlling suspension arrangements by aerodynamic means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/005—Front spoilers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D35/00—Vehicle bodies characterised by streamlining
- B62D35/007—Rear spoilers
Abstract
The invention provides an aerodynamic kit for improving the control stability of a racing car, which comprises a tail wing and a front fixed wing and is characterized in that the tail wing is composed of an upper fin and a lower fin, big end plates are arranged at two ends of the fins of the tail wing and extend downward, and louver structures are additionally arranged on the end plates, so that the structure can consider wind resistance and pressure simultaneously and a basic aerofoil can be optimally determined. By fully considering the pressure, an overall scheme of the tail wing and the front fixed wing is designed; a male die carbon fiber cladding process is adopted, so that the weight of the kit is effectively reduced; and support rods and adjustable draglines are matched for fixing, so that the connection reliability is improved.
Description
Technical field
The invention belongs to aerodynamic studies field, particularly relate to a kind of university student's of being applied to formula car to improve empty power dynam external member and the method for designing thereof of its operational stability.
Background technology
As far back as the sixties in last century, just there is the aerodynamics external members such as empennage in F1 racing car, its objective is and increase car load downforce, thus improve racing car road-holding property; Except empennage, the aerodynamics external members such as the predetermination wind wing and bottom diffuser are also equipped with in F1 racing car, can will derive fast after the air-flow combing bottom racing car, in formation meiobar, bottom, thus make the racing car close proximity to ground of running at high speed.At present, many sports cars also design and installation have empennage, and also known as " afterbody bumper/spoiler ", Main Function is afterbody lift when reducing galloping, thus effectively solves the problem such as oversteer and the minimizing of trailing wheel adhesive ability.
Since holding the contest of first Chinese college students formula car from 2010, competition fleet increases year by year, nearly Liang Nianduojia fleet has all carried out the design of aerodynamics assembly, but it has occurred in race that such as weight is excessive, fracture, resistance increase and install the problems such as unstable, and its downforce effect produced is with the difference of design plan, manufacturing process, installation method and bigger difference.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of the aerodynamics external member and the method for designing thereof that improve racing car road-holding property, sets about from the design of aerofoil profile, takes into account downforce effect and the windage characteristic of aerodynamics external member, the design racing car predetermination wind wing and empennage; Turn to target with light weight improve manufacturing process and improve installation steadiness.
In order to solve above technical matters, the present invention is achieved through the following technical solutions:
A kind of aerodynamics external member improving racing car road-holding property, comprise empennage and the predetermination wind wing, it is characterized in that: described empennage adopts upper and lower two-piece type fin, and empennage fin two ends adopt large end plate and to downward-extension, increase louver structure on end plate simultaneously.
The described predetermination wind wing adopts a slice integral type main wing additional two panels split wing flap, and namely main wing two ends are provided with end plate, and two end plates place respectively increases the first wing flap, the upper and lower two panels wing flap of the second wing flap.
Described fin leading-edge radius and trailing edge radius are respectively 3mm and 0.3mm.
Empennage adopts adjustable-length intersection drag-line and carbon fibre struts and frame body to be connected and fixed.
Improve an aerodynamics external member method of designing for racing car road-holding property, comprise the following steps:
1) first preliminary design baseline airfoil, suitably revise based on typical wing, adopt the arc radius of the different angle of attack of CFD Measures compare, fin frontier and rear, finned length and thickness parameter on the impact of aerodynamic performance, and these parameters are determined in optimization;
2) on preferred single-blade type basis, for operation stabilization sexual demand, design empennage scheme, empennage have employed upper and lower two-piece type fin, and empennage fin two ends adopt large end plate and to downward-extension, and that guarantees that air-flow also can be stable when crossing curved passes through fin, and be unlikely to disperse to both sides, on end plate, increase louver structure, its effect is to wing tip pressure release simultaneously, reduces the eddy current produced;
3) conceptual design of the predetermination wind wing is carried out, predetermination wind wing scheme is a slice integral type main wing additional two panels split wing flap, and namely main wing two ends are provided with end plate, and two end plates place respectively increases the first wing flap, the upper and lower two panels wing flap of the second wing flap, relative to the two panels wing, the tip vortex of three wing generations is less;
4) consider for lightweight, optimize the process for machining and manufacturing of empennage and the predetermination wind wing, the full carbon fiber of formpiston is adopted to apply system, be specially: front wing empennage uses formpiston method, namely shape is cut out with carbon fiber board or aluminium sheet, adopt hot line to bend cutting foam again, and use foamed glue bonding, finally directly apply carbon fiber at foam surface;
5) consider the connection reliability of aerodynamics external member and racing car body, adopt carbon fibre struts and adjustable drag-line to carry out the fixing of empennage, be fixed on vehicle frame steel pipe; Bolt, nut and hanger is adopted to fix the predetermination wind wing.
Further comprising the steps: in order to effectively reduce the differential pressure gradients at front wing rear portion, adopt slot treatment at the second wing flap.
Further, fin leading-edge radius and trailing edge radius are respectively 3mm and 0.3mm.
Beneficial effect of the present invention: can take into account windage and downforce, optimizes and determines baseline airfoil; Take into full account downforce, design empennage and predetermination wind wing overall plan; Adopt formpiston carbon fiber to apply technique processed, effectively alleviate external member weight; Adopt pole to coordinate with adjustable drag-line fixing, improve connection reliability.
Accompanying drawing explanation
Baseline airfoil that Fig. 1 adopts and parameter;
Fig. 2 tail structure schematic diagram;
Fig. 3 predetermination wind wing structure schematic diagram;
Fig. 4 empennage fixed solution.
Detailed description of the invention
Below in conjunction with accompanying drawing, concrete performance is described in detail.
See Fig. 2, Fig. 3, improve an aerodynamics external member for racing car road-holding property, comprise empennage and the predetermination wind wing, empennage adopts upper and lower two-piece type fin 5, and empennage fin two ends adopt large end plate 6 and to downward-extension, increase louver structure 7 on end plate simultaneously.Fin 5 leading-edge radius and trailing edge radius are respectively 3mm and 0.3mm.The predetermination wind wing adopts a slice integral type main wing additional two panels split wing flap, and namely main wing 8 two ends are provided with end plate 12, and two end plates place respectively increases by the first wing flap 9, second wing flap about 10 two panels wing flap.Second wing flap 10 is provided with fluting 11.
Technical solution of the present invention is realized by following steps.
(1) baseline airfoil optimizing design scheme: first preliminary design baseline airfoil, suitably revise based on typical wing, adopt the parameters such as the arc radius of the different angle of attack of CFD Measures compare, fin frontier and rear, finned length and thickness on the impact of aerodynamic performance.Final comprehensive windage and downforce effect, determine each basic specification, single-blade type and parameter thereof are as shown in Figure 1; Leading-edge radius and trailing edge radius are respectively 3mm and 0.3mm.
(2) tail fin design scheme: designed monolithic aerofoil profile as shown in Figure 1, on preferred single-blade type basis, for operation stabilization sexual demand, designs empennage scheme.Because empennage belongs to part highly the highest in racing car, the resistance produced also is maximum.In the present invention, empennage have employed upper and lower two-piece type fin 5, and empennage fin two ends adopt large end plate 6 and to downward-extension, can guarantee that air-flow also can be stable when crossing curved by fin, and be unlikely to disperse to both sides.On end plate, increase louver structure 7, its effect is to wing tip pressure release simultaneously, reduces the eddy current produced.Consider in conjunction with empennage aerodynamic performance analysis result and for stability, empennage fin suitably increases thickness.Empennage scheme as shown in Figure 2.
(3) predetermination wind wing design plan: as shown in Figure 3; The design plan of the predetermination wind wing, except producing except downforce as far as possible, also should be considered air-flow diversion tire and provide enough radiating airflows for front brake disc.In the present invention, predetermination wind wing scheme is a slice integral type main wing additional two panels split wing flap, and namely main wing 8 two ends are provided with end plate, and two end plates place respectively increases by the first wing flap 9, second wing flap about 10 two panels wing flap, relative to the two panels wing, the tip vortex of three wing generations is less.In order to effectively reduce the differential pressure gradients at front wing rear portion, slot treatment can be adopted at the second wing flap 10.Aerofoil profile angle should be guaranteed to make fin stall; Adopt fin spacing should guarantee to produce enough eddy zones.Predetermination wind wing scheme as shown in Figure 3.End plate should be tried one's best greatly, can guarantee the stability of flap surface air motion.
(4) processing and manufacturing scheme: consider for lightweight, in order to alleviate the weight of the predetermination wind wing and empennage as far as possible, optimize the process for machining and manufacturing of empennage and the predetermination wind wing, full carbon fiber is adopted to apply the processing technology of system in the present invention, be specially: front wing empennage uses formpiston method, namely cuts out shape with carbon fiber board or aluminium sheet, then adopt hot line to bend cutting foam, and use foamed glue bonding, finally directly apply carbon fiber at foam surface.Builtin-nut can be adopted or direct bonding nut and pad in inner side with the fixing of end plate.
(5) be fixedly connected with scheme: the connection reliability considering aerodynamics external member and racing car body, the present invention adopts carbon fibre struts 2 and adjustable drag-line 3 to carry out the fixing of empennage, is fixed on vehicle frame steel pipe 4; Adopt bolt, nut and hanger to fix the predetermination wind wing, empennage is connected and fixed scheme as shown in Figure 4: 1: empennage bottom fin; 2: four carbon fibre struts, connect and support empennage and vehicle frame; Article 3: two, adjustable drag-line; 4: vehicle frame steel pipe, as seen from the figure, empennage bottom fin earthing is crossed four carbon fibre struts and two adjustable drag-lines and vehicle frame steel pipe and is fixed.
Claims (8)
1. one kind is improved the aerodynamics external member of racing car road-holding property, comprise empennage and the predetermination wind wing, it is characterized in that: described empennage adopts upper and lower two-piece type fin, and empennage fin two ends adopt large end plate and to downward-extension, increase louver structure on end plate simultaneously.
2. a kind of aerodynamics external member improving racing car road-holding property as claimed in claim 1, it is characterized in that: the described predetermination wind wing adopts a slice integral type main wing additional two panels split wing flap, namely main wing two ends are provided with end plate, and two end plates place respectively increases the first wing flap, the upper and lower two panels wing flap of the second wing flap.
3. a kind of aerodynamics external member improving racing car road-holding property as claimed in claim 1, is characterized in that: described fin leading-edge radius and trailing edge radius are respectively 3mm and 0.3mm.
4. a kind of aerodynamics external member improving racing car road-holding property as claimed in claim 1, is characterized in that: empennage adopts adjustable-length intersection drag-line and carbon fibre struts and frame body to be connected and fixed.
5. a kind of aerodynamics external member improving racing car road-holding property as claimed in claim 2, is characterized in that: described second wing flap is provided with fluting.
6. improve an aerodynamics external member method of designing for racing car road-holding property, comprise the following steps:
1) first preliminary design baseline airfoil, suitably revise based on typical wing, adopt the arc radius of the different angle of attack of CFD Measures compare, fin frontier and rear, finned length and thickness parameter on the impact of aerodynamic performance, and above-mentioned parameter is determined in optimization;
2) on preferred single-blade type basis, for operation stabilization sexual demand, design empennage scheme, empennage have employed upper and lower two-piece type fin, and empennage fin two ends adopt large end plate and to downward-extension, and that guarantees that air-flow also can be stable when crossing curved passes through fin, and be unlikely to disperse to both sides, on end plate, increase louver structure, its effect is to wing tip pressure release simultaneously, reduces the eddy current produced;
3) conceptual design of the predetermination wind wing is carried out, predetermination wind wing scheme is a slice integral type main wing additional two panels split wing flap, and namely main wing two ends are provided with end plate, and two end plates place respectively increases the first wing flap, the upper and lower two panels wing flap of the second wing flap, relative to the two panels wing, the tip vortex of three wing generations is less;
4) consider for lightweight, optimize the process for machining and manufacturing of empennage and the predetermination wind wing, the full carbon fiber of formpiston is adopted to apply system, be specially: front wing empennage uses formpiston method, namely shape is cut out with carbon fiber board or aluminium sheet, adopt hot line to bend cutting foam again, and use foamed glue bonding, finally directly apply carbon fiber at foam surface;
5) consider the connection reliability of aerodynamics external member and racing car body, adopt carbon fibre struts and adjustable drag-line to carry out the fixing of empennage, be fixed on vehicle frame steel pipe; Bolt, nut and hanger is adopted to fix the predetermination wind wing.
7. a kind of aerodynamics external member method of designing improving racing car road-holding property as claimed in claim 6, is characterized in that: in order to effectively reduce the differential pressure gradients at front wing rear portion, adopts slot treatment at the second wing flap.
8. a kind of aerodynamics external member method of designing improving racing car road-holding property as claimed in claim 6, is characterized in that: fin leading-edge radius and trailing edge radius are respectively 3mm and 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950228.1A CN105480311A (en) | 2015-12-18 | 2015-12-18 | Aerodynamic kit for improving control stability of racing car and design method thereof |
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| CN201510950228.1A CN105480311A (en) | 2015-12-18 | 2015-12-18 | Aerodynamic kit for improving control stability of racing car and design method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741226A (en) * | 2016-11-17 | 2017-05-31 | 河北工程大学 | A kind of vehicle intelligent empennage |
| CN106741228A (en) * | 2016-12-19 | 2017-05-31 | 华南理工大学 | A kind of racing car aerodynamics external member of the variable empennage of high lift-drag ratio |
| CN109205082A (en) * | 2018-07-25 | 2019-01-15 | 孟庆友 | A kind of takeaway box |
| CN111770874A (en) * | 2017-12-29 | 2020-10-13 | Ess2科技有限责任公司 | Airfoil and machine incorporating same |
| CN113492930A (en) * | 2021-07-09 | 2021-10-12 | 华侨大学 | Tail wing structure for improving adaptability of FSAE racing car flow field |
Citations (3)
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|---|---|---|---|---|
| CN104742987A (en) * | 2015-02-10 | 2015-07-01 | 武汉理工大学 | FSAE racing car aerodynamic suite |
| CN204488985U (en) * | 2015-01-20 | 2015-07-22 | 武汉理工大学 | A kind of racing car variable section empennage |
| CN205256472U (en) * | 2015-12-18 | 2016-05-25 | 浙江大学城市学院 | Stability of cycle racing is controld is improved aerodynamic external member |
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2015
- 2015-12-18 CN CN201510950228.1A patent/CN105480311A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN204488985U (en) * | 2015-01-20 | 2015-07-22 | 武汉理工大学 | A kind of racing car variable section empennage |
| CN104742987A (en) * | 2015-02-10 | 2015-07-01 | 武汉理工大学 | FSAE racing car aerodynamic suite |
| CN205256472U (en) * | 2015-12-18 | 2016-05-25 | 浙江大学城市学院 | Stability of cycle racing is controld is improved aerodynamic external member |
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| 吴超: "FSC方程式赛车空气动力学套件性能分析", 《湖北汽车工业学院学报》 * |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106741226A (en) * | 2016-11-17 | 2017-05-31 | 河北工程大学 | A kind of vehicle intelligent empennage |
| CN106741228A (en) * | 2016-12-19 | 2017-05-31 | 华南理工大学 | A kind of racing car aerodynamics external member of the variable empennage of high lift-drag ratio |
| CN106741228B (en) * | 2016-12-19 | 2023-02-14 | 华南理工大学 | Racing car aerodynamic suite with high lift-drag ratio and variable tail wing |
| CN111770874A (en) * | 2017-12-29 | 2020-10-13 | Ess2科技有限责任公司 | Airfoil and machine incorporating same |
| CN109205082A (en) * | 2018-07-25 | 2019-01-15 | 孟庆友 | A kind of takeaway box |
| CN113492930A (en) * | 2021-07-09 | 2021-10-12 | 华侨大学 | Tail wing structure for improving adaptability of FSAE racing car flow field |
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Application publication date: 20160413 |