WO2017124781A1 - Hélice, ensemble d'alimentation, et aéronef sans pilote - Google Patents

Hélice, ensemble d'alimentation, et aéronef sans pilote Download PDF

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Publication number
WO2017124781A1
WO2017124781A1 PCT/CN2016/101740 CN2016101740W WO2017124781A1 WO 2017124781 A1 WO2017124781 A1 WO 2017124781A1 CN 2016101740 W CN2016101740 W CN 2016101740W WO 2017124781 A1 WO2017124781 A1 WO 2017124781A1
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WO
WIPO (PCT)
Prior art keywords
paddle
blade
center
degrees
angle
Prior art date
Application number
PCT/CN2016/101740
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English (en)
Chinese (zh)
Inventor
刘峰
江彬
邓涛
王庶
Original Assignee
深圳市大疆创新科技有限公司
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Publication of WO2017124781A1 publication Critical patent/WO2017124781A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C11/00—Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
    • B64C11/16—Blades
    • B64C11/18—Aerodynamic features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C27/00—Rotorcraft; Rotors peculiar thereto
    • B64C27/32—Rotors
    • B64C27/46—Blades
    • B64C27/467—Aerodynamic features

Definitions

  • the present invention relates to a propeller, a power kit having the propeller, and an aircraft having the power kit.
  • the propeller on the unmanned aerial vehicle is a key component of the unmanned aerial vehicle, and the propeller is used to convert the rotation of the motor of the unmanned aerial vehicle or the shaft of the engine into thrust or lift.
  • the outer shape of the propeller in the prior art is mostly rectangular, and the resistance is large and the efficiency is low, which results in the small flying speed of the unmanned aerial vehicle and the short following distance, which seriously affects the flight performance of the unmanned aerial vehicle.
  • a propeller includes a paddle that rotates to form a paddle. At an angle of 50.14% of the radius of the paddle from the center of the paddle, the blade has an angle of attack of 14.4 ⁇ 3 degrees; at a distance from the center of the paddle is 70.08 of the radius of the paddle At %, the angle of attack of the blade is 10.5 ⁇ 3 degrees; at a distance of 90.03% of the radius of the paddle from the center of the paddle, the blade has an angle of attack of 8 ⁇ 3 degrees.
  • the blade has an angle of attack of 23.2 ⁇ 3 degrees;
  • the angle of attack of the blade is 20.9 ⁇ 3 degrees at a distance of 30.2% of the radius of the paddle from the center of the paddle;
  • the angle of attack of the blade is 17.7 ⁇ 3 degrees at a distance of 40.17% of the radius of the paddle from the center of the paddle;
  • the blade At an angle of 60.11% of the radius of the paddle from the center of the paddle, the blade has an angle of attack of 12.2 ⁇ 3 degrees;
  • the blade is attacked at a distance of 80.06% of the radius of the paddle from the center of the paddle An angle of 6.8 ⁇ 3 degrees; and / or
  • the blade At an angle from the center of the paddle to the paddle, the blade has an angle of attack of 7.5 ⁇ 3 degrees.
  • the paddle has a diameter of 700 mm, and the blade has an angle of attack of 23.2 ⁇ 3 degrees at a distance of 70.4 mm from the center of the paddle; and/or
  • the blade At an angle of 105.7 mm from the center of the paddle, the blade has an angle of attack of 20.9 ⁇ 3 degrees;
  • the blade has an angle of attack of 17.7 ⁇ 3 degrees at a distance of 140.6 mm from the center of the paddle;
  • the angle of attack of the blade is 14.4 ⁇ 3 degrees at a distance of 175.5 mm from the center of the paddle;
  • the angle of attack of the blade is 12.2 ⁇ 3 degrees at a distance of 210.4 mm from the center of the paddle;
  • the blade has an angle of attack of 10.5 ⁇ 3 degrees at a distance of 245.3 mm from the center of the paddle;
  • the blade At an angle of 280.2 mm from the center of the paddle, the blade has an angle of attack of 6.8 ⁇ 3 degrees;
  • the blade At an angle of 315.1 mm from the center of the paddle, the blade has an angle of attack of 8 ⁇ 3 degrees;
  • the blade has an angle of attack of 7.5 ⁇ 3 degrees at a distance of 350 mm from the center of the paddle.
  • chord length of the blade is 50.08 ⁇ 5 mm.
  • chord length of the blade is 41.53 ⁇ 5 mm at a distance of 70.08% of the radius of the paddle from the center of the paddle;
  • chord length of the blade is 32.42 ⁇ 5 mm at a distance of 90.03% of the radius of the paddle from the center of the paddle.
  • chord length of the paddle is 41.94 ⁇ 5 mm.
  • chord length of the blade is 56.42 ⁇ 5 mm at a distance of 30.2% of the radius of the paddle from the center of the paddle;
  • chord length of the blade is 53.82 ⁇ 5 mm at a distance of 40.17% of the radius of the paddle from the center of the paddle;
  • chord length of the blade is 45.89 ⁇ 5 mm at a distance of 60.11% of the radius of the paddle from the center of the paddle;
  • chord length of the blade is 36.85 ⁇ 5 mm at a distance of 80.06% of the radius of the paddle from the center of the paddle;
  • the blade At a radius from the center of the paddle to the paddle, the blade has a chord length of 28.08 ⁇ 5 mm.
  • the paddle has a diameter of 700 ⁇ 30 mm;
  • the length of the blade is 325 ⁇ 30 mm.
  • the paddle includes a downwardly facing leaf surface, an upward leaf back, a first side edge connecting one side of the leaf back and the leaf surface, and a connecting the leaf back and the leaf surface
  • the second side edge of the other side, the cross section of the leaf face and the cross section of the blade back are both curved.
  • the leaf surface includes a first bulging portion that protrudes downward; the first side edge includes a curved outwardly convex second bulging portion; and the second side edge includes a curved surface a third arched portion that protrudes outward.
  • first arching portion, the second arching portion and the third arching portion are both near the center of the paddle.
  • the number of the blades is two, and the two blades are centrally symmetric with respect to the center of the paddle;
  • the thickness of the end of the blade away from the center of the paddle is less than the thickness of other portions of the blade.
  • the propeller is a folding paddle, and the propeller includes a paddle that is rotatably coupled to the blade, the number of the blades being at least two;
  • the propeller includes a hub that is fixedly coupled to the blade, the number of the blades being at least two.
  • propeller being a folding paddle comprising a paddle and at least two blades rotatably coupled to the paddle;
  • the paddle formed by the blade has a diameter of 700 ⁇ 30 mm, and the length of the paddle is 325 ⁇ 30 mm;
  • the blade At an angle of 30.2% of the radius of the paddle from the center of the paddle, the blade has an angle of attack of 20.9 ⁇ 3 degrees and the blade has a chord length of 56.42 ⁇ 5 mm;
  • the center of the paddle is 50.14% of the radius of the paddle, the blade has an angle of attack of 14.4 ⁇ 3 degrees, the blade has a chord length of 50.08 ⁇ 5 mm;
  • at the center of the paddle At 70.08% of the radius of the paddle, the blade has an angle of attack of 10.5 ⁇ 3 degrees and the blade has a chord length of 41.53 ⁇ 5 mm.
  • a power kit for an unmanned aerial vehicle comprising a propeller as described above;
  • a motor for driving the propeller to rotate the motor having a KV value of 120.
  • An unmanned aerial vehicle comprising a fuselage, a plurality of arms, and a plurality of power sets as described above, the plurality of arms being coupled to the body, the plurality of power sets being respectively mounted on the plurality of On the arm.
  • the propeller of the present invention reduces the air resistance, improves the efficiency, increases the flight distance of the aircraft and improves the flight performance of the aircraft through the design of the angle of attack on different parts of the blade.
  • FIG. 1 is a schematic structural view of a positive paddle according to an embodiment of the present invention.
  • Fig. 2 is a structural schematic view showing another angle of the front paddle of Fig. 1.
  • FIG. 3 is a schematic view showing the structure of the blade of Figure 2;
  • FIG. 4 is a cross-sectional view of the A-A section of the blade of FIG. 2, the A-A section being 70.4 mm from the center of the paddle of the propeller.
  • Figure 5 is a cross-sectional view of the B-B section of the paddle of Figure 2 with the B-B section 105.7 mm from the center of the paddle of the propeller.
  • Figure 6 is a cross-sectional view of the C-C section of the paddle of Figure 2 with the C-C section 140.6 mm from the center of the paddle of the propeller.
  • Figure 7 is a cross-sectional view of the D-D section of the paddle of Figure 2 with the D-D profile 175.5 mm from the center of the paddle of the propeller.
  • Figure 8 is a cross-sectional view of the E-E section of the paddle of Figure 2 with the E-E section 210.4 mm from the center of the propeller paddle.
  • Figure 9 is a cross-sectional view of the F-F section of the paddle of Figure 2 with the F-F profile 245.3 mm from the center of the paddle of the propeller.
  • Figure 10 is a cross-sectional view of the G-G section of the paddle of Figure 2 with the G-G profile 280.2 mm from the center of the paddle of the propeller.
  • Figure 11 is a cross-sectional view of the H-H section of the paddle of Figure 2 with the H-H profile 315.1 mm from the center of the propeller paddle.
  • Figure 12 is a cross-sectional view of the I-I section of the paddle of Figure 2 with the I-I section 350 mm from the center of the paddle of the propeller.
  • a component when referred to as being “fixed” to another component, it can be directly on the other component or the component can be present.
  • a component When a component is considered to "connect” another component, it can be directly connected to another component or possibly a central component.
  • one A component is considered to be “set to” another component, which can be set directly on another component or possibly a centered component.
  • An unmanned aerial vehicle includes a fuselage, an arm, a propeller, and a driving member for driving the rotation of the propeller, and the arm is coupled to the fuselage.
  • the propeller may be a folding paddle.
  • the number of the propellers may be selected according to actual needs, and may be one, two or more.
  • the driving member is a motor, and the KV value of the motor is 120; it can be understood that in other embodiments, the driving member may be in other forms such as an engine or the like.
  • the propeller may be a positive paddle or a reverse paddle.
  • the so-called positive paddle refers to a propeller that rotates clockwise to generate lift from the tail of the driving part such as the motor to the direction of the motor head; the so-called reverse paddle refers to the counterclockwise rotation from the tail of the motor to the direction of the motor head to generate lift.
  • the structure of the positive paddle is mirror symmetrical with the structure of the reverse paddle, so the structure of the propeller is only exemplified by a positive paddle.
  • the plurality of arms are plural, and the propeller and the driving member are all plural, and each driving member drives one of the propellers to rotate to form a power set. At least one set of the power kit is provided on each arm.
  • the upper and lower orientation terms appearing in the present embodiment are based on the conventional running posture of the propeller and the aircraft after the propeller is mounted on the aircraft, and should not be used as a reference. The description is considered to be restrictive.
  • a positive paddle 100 is provided according to an embodiment of the present invention.
  • the front paddle 100 includes a paddle 101 and two blades 200 disposed on two sides of the paddle 101 .
  • the two blades 200 are centrally symmetrical about the center of the paddle 101.
  • the two blades 200 are rotated to form a paddle.
  • the center of the paddle 101 substantially coincides with the center of the paddle.
  • the positive paddle 100 is a straight paddle, and the positive paddle 100 includes a hub and two blades 200 that are fixedly coupled to the hub.
  • the paddle has a diameter of 700 ⁇ 30 mm.
  • the paddle may have a diameter of 670 mm, 680 mm, 690 mm, 700 mm, 710 mm, 730 mm, or any value within a range of values defined by any two of the above values.
  • the paddle has a diameter of 700 mm.
  • the paddles 200 and the paddles 101 can be integrally formed or connected to each other by a connecting member.
  • the number of the blades 200 may be other numbers according to actual needs; as in another embodiment, the number of the blades 200 is three, and the three blades 200 are opposite to the paddles.
  • the centers are evenly spaced 120 degrees apart in the circumferential direction; in other embodiments, the blades 200 are rotatably coupled to the paddles 101.
  • the paddle 101 can be used to connect with a rotating shaft of a driving member of the unmanned aerial vehicle to enable the driving member to drive the positive paddle 100 to rotate.
  • a reinforcing spacer may be embedded in the paddle 101, and the reinforcing piece may be made of a lightweight high-strength material such as aluminum alloy to improve the strength of the propeller.
  • Each of the blades 200 includes a downwardly facing leaf surface 10, an upwardly facing leaf back 20, a first side edge 30 connecting the leaf back 20 and a side of the leaf surface 10, and a connection to the leaf back 20 And a second side edge 40 of the other side of the foliar surface 10.
  • the foliage 10 and the blade back 20 are curved surfaces.
  • the foliar surface 10 includes a first bulging portion 11 that projects downwardly, the first bulging portion 11 being smoothly transitionally connected to other portions of the foliar surface 10.
  • the first arching portion 11 is adjacent to one end of the blade 200 connected to the paddle 101.
  • the first side edge 30 includes a curved, outwardly projecting second bulge 31.
  • the second arched portion 31 is smoothly transitionally connected to other portions of the first side edge 30.
  • the second arching portion 31 is adjacent to one end of the blade 200 connected to the paddle 101.
  • the second side edge 40 includes a curved, outwardly projecting third bulge 41 that is smoothly transitionally connected to other portions of the second side edge 40.
  • the third arching portion 41 is close to one end of the blade 200 connected to the paddle 101, that is, the third arching portion 41 is close to the center of the paddle.
  • the blade 200 also includes a connector 50 that is coupled to the paddle 101 by the connector 50.
  • the connecting member 50 is provided with a connecting hole 51, and a distance L between a central axis of the connecting hole 51 and a center O of the paddle is about 35 mm.
  • the connecting member 50 is connected to the paddle 101 through the connecting hole 51.
  • the blade 200 is not sharply twisted, the stress is small, the structural strength is high, the fracture is not easy, and the reliability is high.
  • One end of the blade 200 away from the paddle 101 is the thinnest portion of the paddle 200, which is advantageous for reducing air resistance. That is, the thickness of one end of the blade 200 away from the center of the paddle is less than the thickness of other portions of the paddle 200.
  • the length of the blade 200 is 325 ⁇ 30 mm.
  • the length of the blade 200 may be any value between 295 mm and 355 mm, such as 305 mm, 315 mm, 325 mm, 335 mm, 345 mm, 355 mm, or a range of values defined by any two of the above values. Any value within.
  • the blade 200 has a length of 325 mm.
  • the angle of attack referred to herein refers to the angle between the chord of the blade 200 and the velocity of the incoming flow.
  • the angle of attack of the blade 200 is 23.2 ⁇ 3 degrees at a distance O from the center O of the paddle at 20.11% of the radius of the paddle.
  • the angle of attack of the blade 200 may be 20.2 degrees, 21.2 degrees, 22.2 degrees, 23.2 degrees, 24.2 degrees, 25.2 degrees, 26.2 degrees, or a value within a numerical range defined by any two of the above values. In this embodiment, It is 23.2 degrees.
  • the chord length of the blade 200 is 41.94 ⁇ 5 mm at a distance O from the center O of the paddle at 20.11% of the radius of the paddle.
  • the chord length of the blade 200 may be 36.94 mm, 38.94 mm, 40.94 mm, 42.94 mm, 44.94 mm, 46.94 mm, or a value within a numerical range defined by any two of the above values, which is 41.94 mm in the present embodiment. .
  • the angle of attack of the blade 200 is 20.9 ⁇ 3 degrees at a distance O from the center O of the paddle that is 30.2% of the radius of the paddle.
  • the angle of attack of the blade 200 may be 17.9 degrees, 18.9 degrees, 19.9 degrees, 20.9 degrees, 21.9 degrees, 22.9 degrees, 23.9 degrees, or a value within a numerical range defined by any two of the above values. In this embodiment, It is 20.9 degrees.
  • the chord length of the blade 200 is 56.42 ⁇ 5 mm.
  • the chord length of the blade 200 may be 51.42 mm, 53.42 mm, 55.42 mm, 57.42 mm, 59.42 mm, 61.42 mm, or a value within a numerical range defined by any two of the above values, the present embodiment In the formula, it is 56.42 mm.
  • the angle of attack of the blade 200 is 17.7 ⁇ 3 degrees at a distance O from the center O of the paddle at 40.17% of the radius of the paddle.
  • the angle of attack of the blade 200 may be 14.7 degrees, 15.7 degrees, 16.7 degrees, 17.7 degrees, 18.7 degrees, 19.7 degrees, 20.7 degrees, or a value within a numerical range defined by any two of the above values. In this embodiment, It is 17.7 degrees.
  • the chord length of the blade 200 is 53.82 ⁇ 5 mm at a distance O from the center O of the paddle at 40.17% of the radius of the paddle.
  • the chord length of the blade 200 may be 48.82 mm, 50.82 mm, 52.82 mm, 54.82 mm, 56.82 mm, 58.82 mm, or a value within a numerical range defined by any two of the above values, which is 53.82 mm in the present embodiment. .
  • the angle of attack of the blade 200 is 14.4 ⁇ 3 degrees at a distance O from the center O of the paddle at 50.14% of the radius of the paddle.
  • the angle of attack of the blade 200 may be 11.4 degrees, 12.4 degrees, 13.4 degrees, 14.4 degrees, 15.4 degrees, 16.4 degrees, 17.4 degrees, or a value within a numerical range defined by any two of the above values. In this embodiment, It is 14.4 degrees.
  • the chord length of the blade 200 is 50.08 ⁇ 5 mm at a distance O from the center O of the paddle at 50.14% of the radius of the paddle.
  • the chord length of the blade 200 may be 45.08 mm, 47.08 mm, 49.08 mm, 51.08 mm, 53.08 mm, 55.08 mm, or a value within a numerical range defined by any two of the above values, which is 50.08 mm in the present embodiment. .
  • the angle of attack of the blade 200 is 12.2 ⁇ 3 degrees at a distance O from the center O of the paddle that is 60.11% of the radius of the paddle.
  • the angle of attack of the blade 200 may be 9.2 degrees, 10.2 degrees, 11.2 degrees, 12.2 degrees, 13.2 degrees, 14.2 degrees, 15.2 degrees, or a value within a numerical range defined by any two of the above values. In this embodiment, It is 12.2 degrees.
  • the chord length of the blade 200 is 45.89 ⁇ 5 mm at a distance O from the center O of the paddle at 60.11% of the radius of the paddle.
  • the chord length of the blade 200 may be 40.89 mm, 42.89 mm, 44.89 mm, 46.89 mm, 48.89 mm, 50.89 mm, or a value within a numerical range defined by any two of the above values, which is 45.89 mm in the present embodiment. .
  • the angle of attack of the blade 200 is 10.5 ⁇ 3 degrees at a distance of 70.08% from the center O of the paddle.
  • the angle of attack of the blade 200 may be 7.5 degrees, 8.5 degrees, 9.5 degrees, 10.5 degrees, 11.5 degrees, 12.5 degrees, 13.5 degrees, or a value within a numerical range defined by any two of the above values. In this embodiment, It is 10.5 degrees.
  • the chord length of the blade 200 is 41.53 ⁇ 5 mm at a distance of 70.08% from the center O of the paddle.
  • the blade 200 The chord length may be 36.53 mm, 38.53 mm, 40.53 mm, 42.53 mm, 44.53 mm, 46.53 mm, or a numerical value defined by any two of the above values, which is 41.53 mm in the present embodiment.
  • the angle of attack of the blade 200 is 6.8 ⁇ 3 degrees at a distance O from the center O of the paddle at 80.06% of the radius of the paddle.
  • the angle of attack of the blade 200 may be 3.8 degrees, 4.8 degrees, 5.8 degrees, 6.8 degrees, 7.8 degrees, 8.8 degrees, 9.8 degrees, or a value within a numerical range defined by any two of the above values. In this embodiment, It is 6.8 degrees.
  • the chord length of the blade 200 is 36.85 ⁇ 5 mm at a distance of 80.06% from the center O of the paddle.
  • the chord length of the blade 200 may be 31.85 mm, 33.85 mm, 35.85 mm, 37.85 mm, 39.85 mm, 41.85 mm, or a value within a numerical range defined by any two of the above values, which is 36.85 mm in the present embodiment. .
  • the angle of attack of the blade 200 is 8 ⁇ 3 degrees at a distance O from the center O of the paddle at 90.03% of the radius of the paddle.
  • the angle of attack of the blade 200 may be 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, or a value within a numerical range defined by any two of the above values. In this embodiment, It is 8 degrees.
  • the chord length of the blade 200 is 32.42 ⁇ 5 mm at a distance of 90.03% from the center O of the paddle.
  • the chord length of the blade 200 may be 27.42 mm, 29.42 mm, 31.42 mm, 33.42 mm, 35.42 mm, 37.42 mm, or a value within a numerical range defined by any two of the above values, which is 32.42 mm in the present embodiment. .
  • the angle of attack of the blade 200 is 7.5 ⁇ 3 degrees at a radius from the center O of the paddle to the paddle.
  • the angle of attack of the blade 200 may be 4.5 degrees, 5.5 degrees, 6.5 degrees, 7.5 degrees, 8.5 degrees, 9.5 degrees, 10.5 degrees, or a value within a range of values defined by any two of the above values, in this embodiment It is 7.5 degrees.
  • the chord length of the blade 200 is 28.08 ⁇ 5 mm at a radius from the center of the paddle to the paddle.
  • the chord length of the blade 200 may be 23.08 mm, 25.08 mm, 27.08 mm, 29.08 mm, 31.08 mm, 33.08 mm, or a value within a numerical range defined by any two of the above values, which is 28.08 mm in the present embodiment. .
  • the paddle has a diameter of 700 mm.
  • the angle of attack of the blade 200 is 23.2 degrees, the chord length L1 of the blade 200 is 41.94 mm; at a distance of 105.7 mm from the center of the paddle, The angle of attack of the blade 200 is 20.9 degrees, the chord length L2 of the blade 200 is 56.42 mm, and the angle of attack of the blade 200 is 17.7 degrees at a distance of 140.6 mm from the center of the paddle.
  • Blade 200 The chord length L3 is 53.82 mm; the angle of attack of the blade 200 is 14.4 degrees at a distance of 175.5 mm from the center of the paddle, and the chord length L4 of the blade 200 is 50.08 mm; The center of the disk is 210.4 mm, the angle of attack of the blade 200 is 12.2 degrees, the chord length L5 of the blade 200 is 45.89 mm, and the blade 200 is at a distance of 245.3 mm from the center of the paddle.
  • the angle of attack is 10.5 degrees, the chord length L6 of the blade 200 is 41.53 mm; at an angle of 280.2 mm from the center of the paddle, the angle of attack of the blade 200 is 6.8 degrees, the chord of the blade 200
  • the length L7 is 36.85 mm; at an angle of 315.1 mm from the center of the paddle, the angle of attack of the blade 200 is 8 degrees, the chord length L8 of the blade 200 is 32.42 mm; at a distance from the paddle At an angle of 350 mm at the center, the angle of attack of the blade 200 is 7.5 degrees, and the chord length L9 of the blade 200 is 28.08 mm.
  • Table 1 shows the comparison of the test results of the propeller provided by the present embodiment with an existing propeller.
  • the tension/shaft power of the propeller provided by the present embodiment is larger than the tension/shaft power of the existing propeller, that is, the propeller provided by the present embodiment can provide the same power input.
  • the larger pulling force; that is, the propeller provided by the embodiment can provide the same pulling force with less power input, thereby saving power consumption, increasing the following distance and improving efficiency.
  • the power consumption of the propeller provided by the present embodiment can be reduced by 3% to 10%.
  • the maximum pulling force that the propeller provided by the embodiment can provide is increased by 30%-50%, so that the propeller is more operable and more accelerating in actual flight.
  • the propeller provided by the invention reduces the air resistance, improves the efficiency, increases the flight distance of the aircraft and improves the flight performance of the aircraft through the design of the angle of attack on different parts of the blade.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Wind Motors (AREA)
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Abstract

L'invention concerne une hélice comportant des pales (200), les pales (200) tournant pour former un disque d'hélice. Dans une position éloignée du centre du disque d'hélice avec 50,14 % du rayon du disque d'hélice, l'angle d'attaque de la pale (200) est 14,4 ± 3 degrés; dans une position éloignée du centre du disque d'hélice avec 70,08 % du rayon du disque d'hélice, l'angle d'attaque de la pale (200) est 10,5 ± 3 degrés; et, dans une position éloignée du centre du disque d'hélice avec 90,03 % du rayon du disque d'hélice, l'angle d'attaque de la pale (200) est 8 ± 3 degrés. De plus, l'invention concerne également un aéronef sans pilote comportant ladite hélice et son ensemble d'alimentation.
PCT/CN2016/101740 2016-01-19 2016-10-11 Hélice, ensemble d'alimentation, et aéronef sans pilote WO2017124781A1 (fr)

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CN201620062144.4 2016-01-19
CN201620062144.4U CN205345321U (zh) 2016-01-19 2016-01-19 螺旋桨、动力套装及无人飞行器

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WO2017124781A1 true WO2017124781A1 (fr) 2017-07-27

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CN205345321U (zh) * 2016-01-19 2016-06-29 深圳市大疆创新科技有限公司 螺旋桨、动力套装及无人飞行器
CN205801500U (zh) * 2016-06-30 2016-12-14 深圳市大疆创新科技有限公司 螺旋桨、动力套装及无人飞行器
CN205837193U (zh) * 2016-07-28 2016-12-28 深圳市大疆创新科技有限公司 螺旋桨、动力套装及无人飞行器
CN205891216U (zh) * 2016-08-04 2017-01-18 深圳市大疆创新科技有限公司 螺旋桨、动力套装及无人飞行器
CN206202682U (zh) * 2016-09-27 2017-05-31 深圳市大疆创新科技有限公司 桨叶、螺旋桨、动力套装及无人飞行器
CN206141830U (zh) * 2016-10-28 2017-05-03 深圳市大疆创新科技有限公司 螺旋桨、动力套装及无人飞行器
CN206691356U (zh) * 2017-02-28 2017-12-01 深圳市大疆创新科技有限公司 螺旋桨、动力组件及飞行器
CN206954494U (zh) * 2017-06-30 2018-02-02 深圳市大疆创新科技有限公司 螺旋桨、动力组件及飞行器
CN206926806U (zh) * 2017-07-25 2018-01-26 深圳市大疆创新科技有限公司 螺旋桨、动力组件及飞行器
WO2019119379A1 (fr) * 2017-12-21 2019-06-27 深圳市大疆创新科技有限公司 Hélice, assemblage motorisé et aéronef sans pilote
CN109969391A (zh) * 2017-12-28 2019-07-05 辽宁壮龙无人机科技有限公司 无人机及其螺旋桨
CN108945396A (zh) * 2018-03-30 2018-12-07 中山市朗宇模型有限公司 螺旋桨
CN108820187A (zh) * 2018-03-30 2018-11-16 中山市朗宇模型有限公司 螺旋桨、动力组件及飞行器
CN114228988A (zh) * 2021-11-26 2022-03-25 南昌三瑞智能科技有限公司 一种大推力高升阻比螺旋桨及该螺旋桨桨叶设计方法

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