CN202642093U - Propeller and aircraft with propeller - Google Patents
Propeller and aircraft with propeller Download PDFInfo
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- CN202642093U CN202642093U CN 201220148590 CN201220148590U CN202642093U CN 202642093 U CN202642093 U CN 202642093U CN 201220148590 CN201220148590 CN 201220148590 CN 201220148590 U CN201220148590 U CN 201220148590U CN 202642093 U CN202642093 U CN 202642093U
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Abstract
The utility model is suitable for the technical field of propellers, and provides a propeller and an aircraft with the propeller. The propeller comprises a blade and an axle portion, the blade is provided with a windward front edge and a rear edge opposite to the front edge, the blade is provided with a upward blade back and a downward blade face, one end of the blade is a paddle blade, the other end of the blade is a paddle root, a curved face portion is formed at a position of the paddle blade close to the paddle root, the curved face portion comprises an arched portion close to the front edge and a recessed portion close to the rear edge, the arched portion and the recessed portion are in smoothly transitional arrangement, the arched portion generally arches upwards relative to the blade, and the recessed portion generally concaves downwards relative to the blade. The aircraft comprises a body, and the propeller is arranged on the body. The propeller is high in efficiency, and flight performance of the aircraft is improved.
Description
Technical field
The utility model belongs to the Propeller technology field, relates in particular to a kind of screw propeller and has the aircraft of this screw propeller.
Background technology
Carry-on screw propeller, as the important Primary Component of aircraft, it is used for the rotation of motor or driving engine shaft is converted into thrust or lift.Screw propeller of the prior art, its outer shape is mostly rectangular, and its resistance is large, efficient is low, causes the flying speed of aircraft little, continues and navigate apart from short, has had a strong impact on the airworthiness of aircraft.
The utility model content
The purpose of this utility model is to overcome that there is the deficiency that quality is heavier and efficient is not high in screw propeller in the above-mentioned prior art, a kind of screw propeller is provided and has had the aircraft of this screw propeller, and its screw propeller quality is light and efficient is high, has improved the airworthiness of aircraft.
The utility model is achieved in that a kind of screw propeller, comprise blade and axle center part, described blade has the leading edge and the trailing edge relative with described leading edge of facining the wind, described blade have up blade back and blade face down, one end of described blade is blade, the other end is blade root, the outer end of described blade is blade tip, described blade is close to described blade root place and is formed with curved face part, described curved face part comprises the section that arches upward that is close to described leading edge and the depressed part that is close to described trailing edge, the described rounding off setting between section and the depressed part of arching upward, the relative blade integral of the described section that arches upward upwards arches upward, and the relatively described blade integral of described depressed part is to recessed.
Particularly, the direction along described blade tip to described blade root, the width dimensions of described blade and the gauge of described leading edge increase gradually; Direction along described leading edge to described trailing edge, the thickness of described blade dwindles gradually.
Particularly, described leading edge comprises that described the first curve extends to the other end place of blade from blade tip from blade tip obliquely and the first curve of oblique front extension; Described leading edge also comprises and is connected smoothly in the first curve, backward and to the second curve of downward-extension, described the second curve extends to described axle center part.
Particularly, described trailing edge comprises under blade tip is oblique and the 3rd curve of oblique rear extension, described trailing edge also comprises and reaches obliquely the 4th curve that is connected in described axle center part before oblique, the corresponding described depressed part of described trailing edge place is provided with camber line, be connected by described camber line between described the 3rd curve and the 4th curve, all be connected smoothly between described camber line and described the 3rd curve, the 4th curve.
Preferably, the pitch scope of described screw propeller is 304.8mm to 609.6mm.
Preferably, the diameter of described screw propeller is 13 to 17 inches, and the thickness of described axle center part is 2 to 4mm; The described axle center part centre distance of distance is 30% propeller radius place, and the width of blade is 32.7 to 33.3mm; The described axle center part centre distance of distance is 40% propeller radius place, and the width of blade is 35.4 to 36mm; The described axle center part centre distance of distance is 50% propeller radius place, and the width of blade is 34.1 to 34.7mm; The described axle center part centre distance of distance is 60% propeller radius place, and the width of blade is 32.5 to 33.1mm; The described axle center part centre distance of distance is 70% propeller radius place, and the width of blade is 30.2 to 30.8mm; The described axle center part centre distance of distance is 80% propeller radius place, and the width of blade is 26.9 to 27.5mm; The described axle center part centre distance of distance is 90% propeller radius place, and the width of blade is 21.7 to 22.3mm.
Particularly, described screw propeller comprises inner cavernous body and the carbon fiber layer that is coated on described cavernous body, and described cavernous body is cellular.
Further, be embedded with the reinforcement pad in the described axle center part, described axle center part offers connecting bore or/and fixed orifice.
The utility model also provides a kind of aircraft, and described aircraft comprises fuselage, is provided with above-mentioned screw propeller on the described fuselage.
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of screw propeller is provided and has had the aircraft of this screw propeller, it is by being reduced blade gradually to trailing edge direction degree by leading edge, be set to by blade tip to blade root direction that thickness increases gradually and width increases gradually, and be close to described blade root place at blade and be formed with curved face part, curved face part has comprised the section that arches upward that is close to described leading edge and the depressed part that is close to described trailing edge, it has reduced the resistance of screw propeller, improved the efficient of screw propeller, make the flying speed of aircraft, the boat that continues distance increases, and is beneficial to the performance that improves aircraft.
Description of drawings
Fig. 1 is screw propeller that the utility model embodiment the provides block diagram when being positive oar;
Fig. 2 is screw propeller that the utility model embodiment the provides block diagram when being positive oar;
Fig. 3 is screw propeller that the utility model embodiment the provides contrast planar view when being positive oar and anti-oar;
Fig. 4 is screw propeller that the utility model embodiment the provides block diagram when being anti-oar;
Fig. 5 is screw propeller that the utility model embodiment the provides front view when being anti-oar;
Fig. 6 is screw propeller that the utility model embodiment the provides birds-eye view when being anti-oar;
Fig. 7 is screw propeller that the utility model embodiment the provides back view when being anti-oar;
Fig. 8 is screw propeller that the utility model embodiment the provides lateral plan when being anti-oar;
Fig. 9 is A-A generalized section among Fig. 6;
Figure 10 is B-B generalized section among Fig. 6;
Figure 11 is C-C generalized section among Fig. 6;
Figure 12 is D-D generalized section among Fig. 6;
Figure 13 is E-E generalized section among Fig. 6;
Figure 14 is F-F generalized section among Fig. 6;
Figure 15 is G-G generalized section among Fig. 6;
Figure 16 is H-H generalized section among Fig. 6;
Figure 17 is I-I generalized section among Fig. 6;
Figure 18 is screw propeller that the utility model embodiment the provides block diagram when being positive oar;
The screw propeller that Figure 19 provides for the utility model embodiment is 30000 o'clock test result in Reynolds number;
The screw propeller that Figure 20 provides for the utility model embodiment is 60000 o'clock test result in Reynolds number;
The screw propeller that Figure 21 provides for the utility model embodiment is 100000 o'clock test result in Reynolds number;
The screw propeller that Figure 22 provides for the utility model embodiment is 140000 o'clock test result in Reynolds number;
The test result of the screw propeller that provides among the utility model embodiment is provided Figure 23;
Figure 24 is the test result that is not provided with the screw propeller of curved face part;
Figure 25 is the shape relative coordinate value of screw propeller among the utility model embodiment.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Such as Fig. 1～shown in Figure 3, a kind of screw propeller that the utility model embodiment provides, screw propeller can be positive oar 1 ' or anti-oar 1.So-called positive oar 1 ' refers to that from the motor afterbody to the motor cephalad direction clickwise is to produce the screw propeller of lift; So-called anti-oar 1 refers to from the motor afterbody to the motor cephalad direction, and left-hand revolution is to produce the screw propeller of lift.As shown in Figure 3, the structure between positive oar 1 ' and the anti-oar 1 is the mirror image symmetry.
Take anti-oar 1 as example, as shown in Figure 4 and Figure 5, above-mentioned screw propeller comprises blade 10 and axle center part 13, and blade 10 has the leading edge 101 of facining the wind and the trailing edge 102 relative with leading edge 101.Leading edge 101 is the front edges of screw propeller, and trailing edge 102 is the rear part edge of screw propeller; Along the direction that screw propeller rotates, leading edge 101 is in the position that facings the wind all the time.
As shown in Figure 4 and Figure 5, blade 10 has blade back 103 (blade back) and blade face 104 (blade face is again the leaf basin) that is oppositely arranged up and down.Blade back 103 up, blade face 104 is down; No matter just oar 1 ' or anti-oar 1 are blade back 103 up in use, and blade face 104 down.When screw propeller was used on the rotor craft, blade back 103 was positioned at the upper end of blade 10, and blade face 104 is positioned at the lower end of blade 10, and leading edge 101 is positioned at the front edge of blade 10, and trailing edge 102 is positioned at the back edge of blade 10.Screw propeller in rotation, blade 10 and air generation relative motion, air flows through the blade back 103 of blade 10, just looks like that to flow through upper surface of the airfoil the same, the stream pipe attenuates, flow velocity is accelerated, pressure reduces; Air flows through the blade face 104 of blade 10, just as flowing through the wing lower surface, and the chap of stream pipe, pressure raises.During the leading edge 101 of the nearly blade 10 of air flow stream, air-flow stopped, flow velocity slows down, and pressure improves; During the trailing edge 102 of the nearly blade 10 of air flow stream, burbling forms eddy zone, and pressure descends.Like this, all form pressure difference on the upper and lower surface of blade 10 (being blade back 103 and blade face 104) and front and rear edges 101,102.The friction force that this pressure and air-flow act on the blade 10 combines, and has just consisted of the aerodynamic force of blade 10, thereby produces the aerodynamic force of a pulling blade 10, and this aerodynamic force is exactly the power of tractive aircraft flight.The power of another tractive aircraft, the antagonistic force that produces when pushing away air downwards by blade 10 torsional angles gets.Blade 10 is at right angles installed with the turning cylinder of motor or engine, and blade 10 has torsional angle, when blade 10 rotation by the torsional angle of blade 10 above air intake, and add a power that pushes away downwards for the air that sucks.Meanwhile, air-flow is also given 10 1 antagonistic forces of blade, and this antagonistic force also is the power of tractive aircraft flight.
As shown in Figure 4 and Figure 5, an end of blade 10 is blade 11, and the other end is blade root 12, and blade 11 outer ends are blade tip, and the two ends of blade root 12 are connected to the inner and the axle center part 13 of blade 11.In the present embodiment, blade 11, blade root 12 and axle center part 13 are one-body molded, and axle center part 13 is used for being connected with the motor of aircraft or the rotating shaft of engine, so that motor or engine can drive the screw propeller rotation; Blade 11 and on curved face part 105 as the main portion of screw propeller, play a part great to the performance of screw propeller; Blade root 12 is connected between blade 11 and the axle center part 13, and its thickness is larger, and intensity is better.
As shown in Figure 4 and Figure 5, blade 11 is close to blade root 12 places and is formed with curved face part 105, curved face part 105 comprises the section that arches upward 1051 that is close to leading edge 101 and the depressed part 1052 that is close to trailing edge 102, the rounding off setting between section 1051 and the depressed part 1052 of arching upward, section's 1051 relative blade 10 integral body that arch upward upwards arch upward, and depressed part 1052 relative blade 10 integral body are to recessed.Particularly, with reference to shown in Figure 180, be close to blade root 12 places corresponding to blade 11, blade 10 herein upwards arches upward to trailing edge 102 directions from leading edge 101 and has formed the curved section 1051 that arches upward, from the end of the section of arching upward 1051 to trailing edge 102 directions, blade 10 herein is arcuation and oblique lower setting and extends to trailing edge 102, has formed curved depressed part 1052; It is plane that the end face of axle center part 13 can be, if take the upper surface of axle center part 13 as reference data, the upper surface of the section's 1051 relative axle center parts 13 that arch upward upwards is the curved surface shape slightly arches upward, and the upper surface of depressed part 1052 relative axle center parts 13 is slightly to lower recess.Arch upward and be connected smoothly between the other parts on section 1051, depressed part 1052 and the blade 10.The section that arches upward 1051 that upwards arches upward can make the air-flow at leading edge 101 places be easy to flow into, improved the air intake performance, reduced the air intake resistance, can the air-flow that be entered by the section of arching upward 1051 belows be pushed to recessed depressed part 1052, produce a pair of larger application force and antagonistic force between air-flow and the depressed part 1052, thereby make depressed part 1052 places obtain larger lift, improved the efficient of screw propeller, be beneficial to the weight that reduces screw propeller and the performance that can improve aircraft.Without sharply reversing part, stress is less on the blade 10, and structural strength is higher, frangibility not, and reliability is high.
Particularly, such as Fig. 4～shown in Figure 6,12 the direction along blade tip to blade root, the gauge of the width dimensions of blade 11 and leading edge 101 increases gradually; 102 the direction along leading edge 101 to trailing edge, the thickness of blade 11 dwindles gradually; The end of blade tip is the thinnest zone of screw propeller, and blade tip is blade-like, and it is very thin very sharp, is beneficial to reduce resistance.The leading edge 101 that blade 11 facings the wind is thicker, its structural strength is high, frangibility not, blade 11 trailing edges 102 are stressed less, can be designed to thinner, be beneficial to the weight that reduces screw propeller, under the prerequisite that guarantees structural strength, blade 11 is lighter, and inertia is also just less, the speed of response of screw propeller is also just faster, has improved the efficient of screw propeller.Be connected smoothly between blade 11 and the blade root 12, be connected smoothly between blade root 12 and the axle center part 13.Blade 11 integral body are streamline contour, and its resistance is very little and efficient is high, have further improved the flying speed of aircraft and the prolongation boat distance that continues, thereby have improved the performance of aircraft.And because each one is connected smoothly, blade 11 and blade root 12 toughness and intensity everywhere is better, even at High Rotation Speed or for a long time under the use state, screw propeller is easy fracture not also, and reliability is high.
Need to prove, the place ahead in the present embodiment, rear, the orientation term such as upper and lower be conventional operation attitude take aircraft and screw propeller as reference, and should not be considered as have restricted.
Such as the test result of Figure 19 to the screw propeller that provides for this enforcement shown in Figure 22.Test result when wherein Figure 19 is Reynolds number 30000, the test result when Figure 20 is Reynolds number 60000, the test result when Figure 21 is Reynolds number 100000, test result when Figure 22 is Reynolds number 140000, can find out from each figure, its lift is larger, and resistance is less.
As shown in figure 15, preferably, as shown in Figure 4 and Figure 5, it is 58% to 78% propeller radius place that curved face part 105 is positioned at distance apart from blade tip, and curved face part 105 is close to trailing edge 102.
Particularly, as shown in Figure 5 and Figure 6, leading edge 101 comprise from blade tip obliquely and the first curve 111, the first curves 111 of oblique front extension extend to the other end place of blade 11 from blade tip; Leading edge 101 also comprises and is connected smoothly in the first curve 111, extends to axle center part 13 backward and to the second curve 112, the second curves 112 of downward-extension.
Particularly, such as Fig. 4～shown in Figure 6, trailing edge 102 comprises and also comprises from blade tip oblique the 3rd curve 113, trailing edge 102 lower and oblique rear extension and to reach obliquely the 4th curve 114 that is connected in axle center part 13 before oblique, trailing edge 102 corresponding depressed parts 1052 places are provided with camber line 115, be connected by camber line 115 between the 3rd curve 113 and the 4th curve 114, all be connected smoothly between camber line 115 and the 3rd curve 113, the 4th curve 114.It is slightly wide that blade 11 can be postmedian, and two is slightly narrow, leading edge 101 is higher, and the shorter and trailing edge 102 of trailing edge 102 has the recessed streamline structure of an arcuation.Owing to having curved face part 105, blade 11 has formed different blade angles, and wherein the blade angle at curved face part 105 places is larger.So-called blade angle refers to the oar string of screw propeller and the angle between blade 11 plane of rotations, and blade angle is larger, and then the rotate a circle amount of air of discharge of screw propeller is also more.The oar string refers to the line between leading edge 101 and the trailing edge 102.Therefore the air that curved face part 105 places discharge is more, it can obtain larger antagonistic force, is beneficial to the efficient that improves screw propeller.And the thickness at curved face part 105 places is thicker than the thickness at blade tip place, therefore larger antagonistic force load can be born by curved face part 105 places.And by arranging to recessed curved face part 105, be difficult for when it is subject to the Air Reverse application force in rotation process producing the flexible deformation, can increase the structural strength of blade 11, be easy to guarantee the stability of aircraft flight.
Through deriving, the big or small available following formula of screw propeller pulling force represents:
P＝C
Pρn
2D
4
P in the formula: screw propeller pulling force [newton];
C
P: the screw propeller tension coefficient, expression blade number, blade form, the blade angle of attack,
The factors such as blade resulting velocity direction and surface quality are on the impact of pulling force;
ρ: density of air [kg/m];
N: propeller speed [revolutions per second];
D: diameter of propeller [rice];
Can find out from above-mentioned pulling force formula, the factor that affects pulling force has density of air, propeller speed, diameter of propeller, tension coefficient etc.Tension coefficient depends on again the factors such as direction of tangent plane shape, aspect, surface quality, the blade angle of attack and blade resulting velocity of blade number, the blade of screw propeller.The screw propeller that the utility model embodiment provides, it improves the screw propeller tension coefficient by improving blade 11 tangent plane shape and aspects.
Particularly, as shown in Figure 4 and Figure 5, leading edge 101 roundings of blade 10; Trailing edge 102 roundings of blade 10 are beneficial to the reduction resistance, and can avoid blade 11 too sharp and hurt sb.'s feelings.
Preferably, as shown in Figure 5 and Figure 6, the length of blade 11 accounts for 70% to 80% of blade 10 total lengths, blade 11 and on curved face part be the part that screw propeller mainly works.Preferably, blade 10 is provided with two, take one of them blade 10 as benchmark, another blade 10 forms take the center of rotation oar 1 as axle center horizontal rotary turnback for a blade 10 wherein, namely the center circumferential array along axle center part 13 arranges between two blades 10, if blade 10 is provided with three, it is the in a circumferential direction evenly distribution of interval 120 degree of center of axle center part 13 relatively.Two blades 10 are divided into the two ends of axle center part 13, axle center part 13 can and symmetrical rectangular plate-like etc., two blade 10 mutual balances, balance quality is good and efficient is high.
Particularly, as shown in Figure 5 and Figure 6, axle center part 13 offers connecting bore 131 or/and fixed orifice 132, to be used for connecting the turning cylinder of motor on the aircraft or engine.
Preferably, such as Fig. 4, the diameter of screw propeller is 13 to 17 inches, and the thickness of axle center part 13 is 2 to 4mm; Fig. 9 is 30% propeller radius place apart from axle center part 13 centre distances to Figure 17 shows that screw propeller section drawing everywhere, and the width of blade 11 is 32.7 to 33.3mm; Be 40% propeller radius place apart from axle center part 13 centre distances, the width of blade 11 is 35.4 to 36mm; Be 50% propeller radius place apart from axle center part 13 centre distances, the width of blade 11 is 34.1 to 34.7mm; Be 60% propeller radius place apart from axle center part 13 centre distances, the width of blade 11 is 32.5 to 33.1mm; Be 70% propeller radius place apart from axle center part 13 centre distances, the width of blade 11 is 30.2 to 30.8mm; Be 80% propeller radius place apart from axle center part 13 centre distances, the width of blade 11 is 26.9 to 27.5mm; Be 90% propeller radius place apart from axle center part 13 centre distances, the width of blade 11 is 21.7 to 22.3mm.Certainly, understandable, other size of pitch, diameter and screw propeller also can be other suitable numerical value, all belongs to protection domain of the present utility model.Through experiment, by above-mentioned design, the efficient of screw propeller is increased to greater than 9.1g/w by 8.1 to 8.3g/w, efficient can improve more than 10%.
Preferably, the pitch of screw propeller is 0.8 to 1.6 times of diameter of propeller.In the present embodiment, the diameter of screw propeller is 15 inches, and its pitch scope is 304.8mm to 609.6mm.The meaning of pitch is that screw propeller revolves and turns around, according to the angle of screw propeller, and the screw propeller distance of advancing in theory.
Such as Figure 23 with shown in Figure 24ly be the screw propeller provide in the present embodiment and the contrast test result who is not provided with the contrast screw propeller of curved face part 105, wherein Figure 23 is the test result of screw propeller in the present embodiment, and Figure 24 is not for being provided with the test result of the close screw propeller of curved face part 105 and other bar shaped.4008KV450 refers to the motor model among Figure 23, its parameter 450r/min/v, 4008 finger motor stators are of a size of 40*8mm, as can be seen from Figure 23, the screw propeller that the present embodiment provides, the efficient of its screw propeller when among Figure 24 curved face part 105 not being set is high by approximately 10%.
As shown in figure 25, be the shape relative coordinate value of screw propeller in the present embodiment.
Particularly, screw propeller comprises inner cavernous body and the carbon fiber layer that is coated on cavernous body, and it is cellular that cavernous body is.Its light weight of carbon fiber layer and intensity are high, are beneficial to the efficient that improves screw propeller.Be the weight that cellular cavernous body can further alleviate screw propeller, further improved the efficient of screw propeller.Certainly, screw propeller also can wholely adopt the materials such as plastics, all belongs to protection domain of the present utility model.
Further, be embedded with the reinforcement pad in the axle center part 13, the reinforcement pad can adopt such as the material of the light-high-strengths such as aluminum alloy to be made, and it has further improved the structural strength of screw propeller.The thickness of axle center part 13 is about 3mm, and intensity is better, is convenient to the installation of screw propeller and fixing.
The utility model embodiment also provides a kind of aircraft, and aircraft can be rotor craft, and aircraft can be as unmanned plane etc., with take photo by plane, ground mapping, Investigating and rescue, aerial monitoring, polling transmission line etc.Above-mentioned aircraft comprises fuselage, is provided with above-mentioned screw propeller on the fuselage and be used for drives the actuator of screw propeller rotation, and actuator can be motor or driving engine etc., screw propeller and actuator can be provided with one group, two or more sets.When screw propeller only is provided with one group, can select positive oar 1 ', such as Fig. 1 or installation shown in Figure 2, and make positive oar 1 ' clickwise, to produce lift; Certainly, also can select anti-oar 1, and make anti-oar 1 clickwise, producing lift, when selecting positive oar 1 ' and anti-oar 1, all blade back 103 up, blade face 104 is down.When screw propeller is provided with two or more sets, the quantity of its positive oar 1 ' and anti-oar 1 can equate, but positive oar 1 ' and anti-oar 1 alternate intervals setting, and positive oar 1 ' is rotated in a clockwise direction, and anti-oar 1 rotates in the counterclockwise direction, and its leading edge 101 all can be in down with the wind direction, and be blade back 103 up, blade face 104 down, positive oar 1 ' and anti-oar 1 all can produce lift, to guarantee that aircraft can stably fly.
A kind of screw propeller provided by the utility model and have the aircraft of this screw propeller, as shown in figure 18, it is reduced gradually, is set to by blade tip to blade root 12 directions to trailing edge 102 direction degree by leading edge 101 by blade 11, and thickness increases gradually and width increases gradually, and cambered surface to lower recess is set in blade 11 and blade root 12 junctions, its reduced screw propeller resistance, improved the efficient of screw propeller, the flying speed of aircraft, the boat that continues distance are increased, be beneficial to the performance that improves aircraft.
Below only be preferred embodiment of the present utility model, not in order to limiting the utility model, all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace or improvement etc., all should be included within the protection domain of the present utility model.
Claims (10)
1. screw propeller, comprise blade and axle center part, described blade has the leading edge and the trailing edge relative with described leading edge of facining the wind, described blade have up blade back and blade face down, one end of described blade is blade, the other end is blade root, the outer end of described blade is blade tip, it is characterized in that, described blade is close to described blade root place and is formed with curved face part, and described curved face part comprises the section that arches upward that is close to described leading edge and the depressed part that is close to described trailing edge, the described rounding off setting between section and the depressed part of arching upward, the relatively described blade integral of the described section of arching upward upwards arches upward, and the relatively described blade integral of described depressed part is to recessed.
2. screw propeller as claimed in claim 1 is characterized in that, the direction along described blade tip to described blade root, and the width dimensions of described blade and the gauge of described leading edge increase gradually; Direction along described leading edge to described trailing edge, the thickness of described blade dwindles gradually.
3. screw propeller as claimed in claim 1 or 2 is characterized in that, described leading edge comprises that described the first curve extends to the other end place of blade from blade tip from blade tip obliquely and the first curve of oblique front extension; Described leading edge also comprises and is connected smoothly in the first curve, backward and to the second curve of downward-extension, described the second curve extends to described axle center part.
4. screw propeller as claimed in claim 1 or 2, it is characterized in that, described trailing edge comprises under blade tip is oblique and the 3rd curve of oblique rear extension, described trailing edge also comprises and reaches obliquely the 4th curve that is connected in described axle center part before oblique, the corresponding described depressed part of described trailing edge place is provided with camber line, be connected by described camber line between described the 3rd curve and the 4th curve, all be connected smoothly between described camber line and described the 3rd curve, the 4th curve.
5. screw propeller as claimed in claim 1 or 2 is characterized in that, described curved portion is 58% to 78% propeller radius place in the distance apart from described blade tip, and described curved face part is close to described trailing edge.
6. screw propeller as claimed in claim 1 or 2 is characterized in that, the pitch scope of described screw propeller is 304.8mm to 609.6mm.
7. screw propeller as claimed in claim 1 or 2 is characterized in that, the diameter of described screw propeller is 13 to 17 inches, and the thickness of described axle center part is 2 to 4mm; The described axle center part centre distance of distance is 30% propeller radius place, and the width of blade is 32.7 to 33.3mm; The described axle center part centre distance of distance is 40% propeller radius place, and the width of blade is 35.4 to 36mm; The described axle center part centre distance of distance is 50% propeller radius place, and the width of blade is 34.1 to 34.7mm; The described axle center part centre distance of distance is 60% propeller radius place, and the width of blade is 32.5 to 33.1mm; The described axle center part centre distance of distance is 70% propeller radius place, and the width of blade is 30.2 to 30.8mm; The described axle center part centre distance of distance is 80% propeller radius place, and the width of blade is 26.9 to 27.5mm; The described axle center part centre distance of distance is 90% propeller radius place, and the width of blade is 21.7 to 22.3mm.
8. screw propeller as claimed in claim 1 or 2 is characterized in that, described screw propeller comprises inner cavernous body and the carbon fiber layer that is coated on described cavernous body, and described cavernous body is cellular.
9. screw propeller as claimed in claim 1 or 2 is characterized in that, is embedded with the reinforcement pad in the described axle center part, and described axle center part offers connecting bore or/and fixed orifice.
10. aircraft, described aircraft comprises fuselage, it is characterized in that, is provided with on the described fuselage such as each described screw propeller in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220148590 CN202642093U (en) | 2012-04-10 | 2012-04-10 | Propeller and aircraft with propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220148590 CN202642093U (en) | 2012-04-10 | 2012-04-10 | Propeller and aircraft with propeller |
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|---|---|
| CN202642093U true CN202642093U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220148590 Expired - Lifetime CN202642093U (en) | 2012-04-10 | 2012-04-10 | Propeller and aircraft with propeller |
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| Country | Link |
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| CN (1) | CN202642093U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015000277A1 (en) * | 2013-07-01 | 2015-01-08 | 昊翔电能运动科技(昆山)有限公司 | Multi-axial flying machine |
| CN105235893A (en) * | 2015-10-27 | 2016-01-13 | 深圳市道通智能航空技术有限公司 | Propeller and aircraft |
| CN105253295A (en) * | 2015-10-30 | 2016-01-20 | 深圳市道通智能航空技术有限公司 | Screw propeller and aerocraft |
| CN105346720A (en) * | 2015-11-13 | 2016-02-24 | 深圳市道通智能航空技术有限公司 | Blades, propeller and unmanned aerial vehicle |
| CN106564588A (en) * | 2016-11-07 | 2017-04-19 | 天津曙光天成科技有限公司 | Unmanned helicopter blade and unmanned helicopter |
| WO2017124781A1 (en) * | 2016-01-19 | 2017-07-27 | 深圳市大疆创新科技有限公司 | Propeller, power assembly and unmanned aircraft |
| WO2019119379A1 (en) * | 2017-12-21 | 2019-06-27 | 深圳市大疆创新科技有限公司 | Propeller, power assembly, and unmanned aerial vehicle |
| CN110053765A (en) * | 2019-04-29 | 2019-07-26 | 安徽冠廷科技有限公司 | Blade |
| CN111608954A (en) * | 2020-06-22 | 2020-09-01 | 广东顺德三扬科技股份有限公司 | Blade and fan blade applying same |
| DE202021105654U1 (en) | 2021-10-15 | 2022-01-18 | Choren Industrietechnik GmbH | Hydrogen fuel cell cargo drone with swappable hydrogen storage tanks |
-
2012
- 2012-04-10 CN CN 201220148590 patent/CN202642093U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015000277A1 (en) * | 2013-07-01 | 2015-01-08 | 昊翔电能运动科技(昆山)有限公司 | Multi-axial flying machine |
| CN105235893A (en) * | 2015-10-27 | 2016-01-13 | 深圳市道通智能航空技术有限公司 | Propeller and aircraft |
| WO2017070978A1 (en) * | 2015-10-27 | 2017-05-04 | 深圳市道通智能航空技术有限公司 | Propeller and aircraft |
| WO2017070980A1 (en) * | 2015-10-30 | 2017-05-04 | 深圳市道通智能航空技术有限公司 | Propeller and aircraft |
| CN105253295A (en) * | 2015-10-30 | 2016-01-20 | 深圳市道通智能航空技术有限公司 | Screw propeller and aerocraft |
| CN105346720A (en) * | 2015-11-13 | 2016-02-24 | 深圳市道通智能航空技术有限公司 | Blades, propeller and unmanned aerial vehicle |
| WO2017124781A1 (en) * | 2016-01-19 | 2017-07-27 | 深圳市大疆创新科技有限公司 | Propeller, power assembly and unmanned aircraft |
| CN106564588A (en) * | 2016-11-07 | 2017-04-19 | 天津曙光天成科技有限公司 | Unmanned helicopter blade and unmanned helicopter |
| CN106564588B (en) * | 2016-11-07 | 2023-10-31 | 天津凤凰智能科技有限公司 | An unmanned helicopter blade and an unmanned helicopter |
| WO2019119379A1 (en) * | 2017-12-21 | 2019-06-27 | 深圳市大疆创新科技有限公司 | Propeller, power assembly, and unmanned aerial vehicle |
| CN110053765A (en) * | 2019-04-29 | 2019-07-26 | 安徽冠廷科技有限公司 | Blade |
| CN111608954A (en) * | 2020-06-22 | 2020-09-01 | 广东顺德三扬科技股份有限公司 | Blade and fan blade applying same |
| CN111608954B (en) * | 2020-06-22 | 2021-10-01 | 叶剑明 | Fan flabellum |
| DE202021105654U1 (en) | 2021-10-15 | 2022-01-18 | Choren Industrietechnik GmbH | Hydrogen fuel cell cargo drone with swappable hydrogen storage tanks |
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Granted publication date: 20130102 |
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| CX01 | Expiry of patent term |