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Propeller

A technology of propellers and spiral grooves, applied in the direction of propellers, rotary propellers, rotary propellers, etc., can solve problems such as loud noise and urban noise pollution, achieve the effects of reducing noise, reducing lethality, and broad application prospects

Pending Publication Date: 2019-08-02
XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, blade-type propellers currently have two disadvantages. On the one hand, the high-speed rotating thin blades will have a very terrible "lethal force" on the objects they touch, and the damage to the objects in contact is devastating, especially At present, model airplanes, rotor drones and other aircraft are widely used, and safety has become an issue that has to be taken seriously; on the other hand, high-speed rotating thin blades will generate a lot of noise, which is a source of urban noise pollution

Method used

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Examples

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Effect test

Embodiment 1

[0024] This embodiment is a propeller for aircraft, including a drive shaft 1, a paddle shaft 2 and a paddle rod 3, the paddle shaft 2 is fixedly connected with the drive shaft 1, and is evenly distributed along the circumferential direction on the drive shaft 1, and the paddle rod 3 is a rotating body , the surface has a spiral groove feature, the number of paddle rods 3 is two, the number of paddle shafts 2 is two, and the paddle rods are sleeved on the paddle shaft 2.

[0025] Further, the paddle 3 is a cylinder.

[0026] Further, the surface of the paddle rod 3 has a spiral convex feature, which helps to further increase the power of the paddle rod 3 to rotate around the paddle shaft 2 .

[0027] Further, the paddle rod 3 is matched with the paddle shaft 2 through a bearing.

[0028] When the drive shaft 1 drives the paddle shaft 2 and the paddle rod 3 to rotate around the drive shaft 1, the airflow flows through the spiral grooves and spiral protrusions on the surface of...

Embodiment 2

[0031] This embodiment is a propeller for aircraft, including a drive shaft 1, a paddle shaft 2 and a paddle rod 3, the paddle shaft 2 is fixedly connected with the drive shaft 1, and is evenly distributed along the circumferential direction on the drive shaft 1, and the paddle rod 3 is a rotating body , the surface has a spiral groove feature, the number of paddle rods 3 is three, the number of shafts 2 is three, and the paddle rods are sleeved on the paddle shaft 2.

[0032] The paddle rod 3 is a frustum cone, and the thin end is located close to the drive shaft 1 . Under the same rotation speed, the larger the diameter of the paddle rod 3 is, the larger the surface linear velocity is, the greater the Magnus effect force can be obtained, and the larger the rotation torque can be generated by the helical groove feature on the surface.

[0033] Further, the surface of the paddle rod 3 has a spiral convex feature, which helps to further increase the power of the paddle rod 3 to...

Embodiment 3

[0038] This embodiment is a marine propeller, including a drive shaft 1, a paddle shaft 2 and a paddle rod 3, the paddle shaft 2 is fixedly connected to the drive shaft 1, and is evenly distributed along the circumferential direction on the drive shaft 1, and the paddle rod 3 is a rotating body. The surface is characterized by spiral grooves, the number of paddle rods 3 is four, the number of paddle shafts 2 is four, and the paddle rods are sleeved on the paddle shafts 2 .

[0039] Further, the paddle 3 is a combination of multiple cylinders and cones, so as to reduce or eliminate the internal torsional stress of the paddle 3 .

[0040] Further, the surface of the paddle rod 3 has a spiral convex feature, which helps to further increase the power of the paddle rod 3 to rotate around the paddle shaft 2 .

[0041] Further, the paddle rod 3 is matched with the paddle shaft 2 through a bearing.

[0042] When the drive shaft 1 drives the paddle shaft 2 and the paddle rod 3 to rota...

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Abstract

The invention belongs to the field of actuator design in the field of aircraft and ship design, and particularly relates to a propeller. The propeller includes a driving shaft, propeller shafts and propeller rods, the propeller shafts are fixedly connected with the driving shaft and evenly distributed in the peripheral direction on the driving shaft, the propeller rods are rotating bodies with thecharacteristic of spiral grooves on the surface, and the propeller rods correspond to the propeller shafts and sleeve the propeller shafts. By adopting the propeller rods with the characteristics ofthe spiral grooves and spiral bulges, the propeller rods rotate automatically when being used and encountering airflow, the Magnus effect is further utilized to generate thrust, the propeller rods areadopted to greatly lower the lethality to touched person or things, and meanwhile, the noise caused by self-oscillation during rotation can be reduced by adopting the propeller rods. The propeller issimple in structure and safe and reliable, and has very broad application prospects in transportation, aerial photography and competitive sports.

Description

technical field [0001] The application belongs to the field of drive design in the fields of aircraft and ship design, and in particular relates to a propeller. Background technique [0002] The propeller is a device that rotates the blades in the air or water, and the rotational power of the paddle engine is converted into propulsion. In the conventional design, we generally use helical blades evenly distributed on the rotating shaft. When the rotating shaft rotates, an interaction force occurs between the fluid and the blades. [0003] However, blade-type propellers currently have two disadvantages. On the one hand, the high-speed rotating thin blades will have a very terrible "lethal force" on the objects they touch, and the damage to the objects in contact is devastating, especially At present, model airplanes, rotor drones and other aircraft are widely used, and safety has become an issue that has to be taken seriously; on the other hand, high-speed rotating thin blade...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/18B64C11/20B63H1/26B63H1/28
CPCB64C11/18B64C11/20B63H1/26B63H1/28
Inventor 王慧邢蓉何祯
Owner XIAN AIRCRAFT DESIGN INST OF AVIATION IND OF CHINA
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