Lightweight high efficiency low noise duct type four-level electric fan propeller

A low-noise, ducted technology, applied in the field of aviation propulsion, can solve the problems of high manufacturing and maintenance costs, high operating noise, and low propulsion efficiency, and achieve the goals of reducing manufacturing and maintenance costs, reducing emissions, and improving propulsion efficiency Effect

Active Publication Date: 2016-03-02
BEIHANG UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the above-mentioned engines, the present invention proposes a light-weight, high-efficiency, low-noise ducted four-stage electric fan propeller. Composite materials to address low propulsion efficiency, noisy operation, bulky mass and high manufacturing and maintenance costs

Method used

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  • Lightweight high efficiency low noise duct type four-level electric fan propeller
  • Lightweight high efficiency low noise duct type four-level electric fan propeller
  • Lightweight high efficiency low noise duct type four-level electric fan propeller

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Such as figure 1 As shown, the present invention provides a light-weight, high-efficiency, low-noise ducted four-stage electric fan propeller, such as figure 1 As shown, the propeller draws in air on one side, accelerates the airflow through the rotation of internal blades, and expels it on the other side, thereby obtaining reverse thrust. In the technical solution, a brushless DC motor is used instead of a traditional engine to drive a four-stage fan, which pressurizes the airflow flowing through the engine four times. A deflector is arranged downstream of each fan stage to reduce airflow rotation. At the same time, noise reduction components and honeycomb interlayers are installed on the inner wall of the nacelle and the outer wall of the fairing to reduce further noise reduction. The entire thruster, except for the electr...

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Abstract

The invention discloses a lightweight high efficiency low noise duct type four-level electric fan propeller, and belongs to the aviation propulsion technical field; the propeller employs a brushless DC motor two motor shafts on two sides of the motor; the motor shaft on one side is fixed on a head cover, and the motor shaft on the other side is fixed on a tail cover; a first level fan, a first level flow deflector, a second level fan, a second level flow deflector, a third level fan, a third level flow deflector, a fourth level fan and a fourth level flow deflector are arranged in sequence from the head cover to the tail cover; the airflow passing the inner side of the engine are pressurized for four times; in addition, the inner wall of a nacelle and the outer wall of a radome are respectively provided with a noise reduction liner. The propeller is small in size, high in propulsion efficiency, can reduce operation noises, can reduce propeller weight, thus reducing making cost and maintenance cost, reducing harmful gas discharge, and improving propeller thrust weight ratio.

Description

technical field [0001] The invention relates to an electric turbine propeller, in particular to a light-weight, high-efficiency, low-noise ducted four-stage electric fan propeller that can be applied to fixed-wing manned aircraft or unmanned aerial vehicles, and belongs to the field of aviation propulsion technology. Background technique [0002] Small fixed-wing aircraft have a wide range of uses in aviation sports, agricultural and forestry services, industrial production services, air tours, public security patrols and other fields. Currently, there are hundreds of thousands of such aircraft in the world, forming a large-scale industry. Similarly, UAVs have broad application prospects in military and civilian fields, such as aerial reconnaissance, aerial early warning, and aerial strikes. Therefore, major aviation countries have invested a lot of resources. For the above-mentioned fixed-wing manned aircraft or unmanned aerial vehicles, it is generally required to have a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64D29/00B64D27/24
CPCB64D27/24B64D29/00Y02T50/60
Inventor 刘沛清刘振臣屈秋林全建冲黄嘉熹
Owner BEIHANG UNIV
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