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Integral ducted propeller

A propeller, ducted technology, applied in the field of unmanned aerial vehicles, can solve the problems affecting the aerodynamic effect of the ducted, working efficiency, blade deformation, etc., to reduce the damage to people or blades, high thrust, and good use safety. Effect

Pending Publication Date: 2017-10-24
杨华东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, compared with ordinary propellers, the existing ducted propellers only reduce the impact noise to a certain extent. Because there is a gap between the blades and the duct, noise and induced resistance will also be generated, which will deform the distal end of the blade and affect the culvert. aerodynamic effect and work efficiency

Method used

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  • Integral ducted propeller

Examples

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Effect test

Embodiment 1

[0022] ginseng figure 1 with figure 2 As shown, the integrated ducted propeller in this embodiment includes a duct 110, a propeller 120 and a fairing 130, the propeller 120 includes a hub 121 and three blades 122, the fairing 130 is fixed on the hub 121, and the three blades Two ends of 122 are respectively connected to propeller hub 121 and duct 110 .

[0023] In this technical solution, the duct of the present invention is integrated with the hub through the blades, and there is no gap between the blades and the duct, so that the impact noise is further reduced. Due to the effect of induced resistance, the blades will be deformed, and the duct can support the blades. Under the same rotating speed, the blades of the present invention will have smaller deformation and generate greater thrust.

[0024] Further, the propeller hub 121 has a cylindrical structure, a motor installation hole is provided at the center of one end of the propeller hub 121 , and a threaded hole is pr...

Embodiment 2

[0033] ginseng image 3 As shown, the integrated ducted propeller in this embodiment includes a duct 210, a propeller 220 and a fairing 230, the propeller 220 includes a hub 221 and three blades 222, the fairing 230 is fixed on the hub 221, and the three blades The two ends of 222 are respectively connected to the propeller hub 221 and the duct 210 .

[0034] In this technical solution, the duct of the present invention is integrated with the hub through the blades, and there is no gap between the blades and the duct, so that the impact noise is further reduced. Due to the effect of induced resistance, the blades will be deformed, and the duct can support the blades. Under the same rotating speed, the blades of the present invention will have smaller deformation and generate greater thrust.

[0035] Further, the propeller hub 221 is a cylindrical structure, a motor installation hole is provided at the center of one end of the propeller hub 221 , and a threaded hole is provide...

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Abstract

The invention discloses an integral ducted propeller. The integral ducted propeller comprises a duct, a propeller and a fairing, wherein the propeller comprises a propeller hub and at least two blades; the fairing is fixed on the propeller hub; and two ends of the blades are connected to the propeller hub and the duct separately. The blades and the duct of the integral ducted propeller are directly connected, so that the impulse noise is further reduced, the induced drag is reduced, deformation of the blades is smaller, the integral ducted propeller has a higher aerodynamic effect and the work efficiency of the propeller is improved.

Description

technical field [0001] This application relates to the field of unmanned aerial vehicles, in particular to an integrated ducted propeller. Background technique [0002] Existing power devices for aircraft use a propulsion device in which a single motor drives a single propeller, that is, a device structure in which propulsion is carried out by using the blades of the propeller to generate thrust. Common materials include chemical materials and metal materials. [0003] Features of existing ducts: Ducted propellers refer to propeller systems surrounded by ducts. Compared with isolated propellers, impact noise is reduced due to ducted propellers with ducted tips. Induced drag is reduced and efficiency is higher. Under the same power consumption, the ducted fan will generate greater thrust than the isolated propeller of the same diameter. At the same time, due to the surrounding effect of the duct, it has compact structure, low aerodynamic noise, and good safety in use. The...

Claims

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Application Information

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IPC IPC(8): B64C11/00
CPCB64C11/001B64U50/14
Inventor 杨华东
Owner 杨华东
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