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Propeller

A propeller and blade technology, applied in the field of aircraft, can solve the problems of large propeller resistance, low flight speed of the aircraft, and short cruising distance, and achieve the effect of reducing air resistance and improving work efficiency.

Pending Publication Date: 2018-12-07
中山市朗宇模型有限公司
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Problems solved by technology

[0003] The propellers in the prior art generally have a rectangular shape. Due to the large resistance and low efficiency of the rectangular propeller, the transmission efficiency of the rotation of the motor output shaft into thrust or lift is affected, resulting in low flight speed and low endurance of the aircraft. The distance is short, and it cannot meet the expected thrust or lift demand when working

Method used

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] This embodiment provides a propeller 100, which may be a forward propeller or a reverse propeller. The so-called positive propeller refers to the propeller that rotates clockwise to generate lift from the driving part such as the tail of the motor to the head of the motor; the so-called reverse propeller refers to the propeller that rotates counterclockwise to generate lift when viewed from the tail of the motor to the head of the motor . The structure...

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Abstract

The invention provides a propeller. The propeller includes a fixing seat and a blade. The blade is connected to the fixing seat. At a distance of 40% of the radius of the propeller from the center ofthe fixing seat, the attack angle of the blade is 15.76degrees+ / -2.5degrees, and the chord length of the blade is 37.32mm+ / -5mm; at a distance of 70% of the radius of the propeller from the center ofthe fixing seat, the attack angle of the blade is 9.44degrees+ / -2.5degrees, and the chord length of the blade is 27.62mm+ / -5mm; and at a distance of 97% of the radius of the propeller from the centerof the fixing seat, the attack angle of the blade is 5.69degrees+ / -2.5degrees, and the chord length of the blade is 16.97mm+ / -5mm. Compared with the correlation technique, the work efficiency of the propeller is higher.

Description

【Technical field】 [0001] The invention relates to the field of aircraft, in particular to a propeller. 【Background technique】 [0002] The propeller is an important part of the aircraft, which is used to convert the rotation of the output shaft of the motor into thrust or lift to realize the take-off and landing, steering, hovering, etc. of the UAV. [0003] The propellers in the prior art generally have a rectangular shape. Due to the large resistance and low efficiency of the rectangular propeller, the transmission efficiency of the rotation of the motor output shaft into thrust or lift is affected, resulting in low flight speed and low endurance of the aircraft. The distance is short, and it cannot meet the expected thrust or lift requirements when working. [0004] Therefore, it is necessary to provide an improved propeller to solve the above problems. 【Content of invention】 [0005] The technical problem to be solved by the present invention is to provide a propelle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B64C11/18B64C11/20
CPCB64C11/18B64C11/20
Inventor 翟占超金功财金功华
Owner 中山市朗宇模型有限公司
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