Dual-drive foldable coaxial propeller device

Abstract

The invention relates to the technical field of underwater vehicles, and discloses a dual-drive foldable coaxial propeller device which comprises a fairing, a first motor, a second motor, a front blade and a rear blade, the first motor, the second motor, the front blade and the rear blade are coaxially arranged in the fairing, the arrangement directions of the first motor and the second motor are opposite, an output shaft of the first motor is connected with the front blade, an output shaft of the second motor is connected with the rear paddle, the rotation direction of the front paddle is opposite to that of the rear paddle, and the arrangement direction of the front paddle is opposite to that of the rear paddle; the tail end of an output shaft of the second motor is connected with a rear propeller hub, the rear propeller blades are rotatably connected to the rear propeller hub, a rear propeller blade reset piece is arranged between the rear propeller hub and the rear propeller blades, and the two ends of the rear propeller blade reset piece are connected with the rear propeller hub and the rear propeller blades respectively. The dual-drive foldable coaxial propeller device has the advantages that the structure is simple, the operation is stable, the control is easy, the propulsive force of the aircraft can be greatly improved during acceleration propulsion, the navigation resistance can be reduced during low-speed cruise, and the navigation efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of underwater vehicles, in particular to a double-drive foldable coaxial propeller device. Background technique [0002] At present, most of the existing underwater vehicles have a single-shaft propeller structure, and only one propeller generates power to propel the underwater vehicle during movement, but this structure generally has the following defects: [0003] (1) The unavoidable torque generated by a single propeller will give a reaction force to the aircraft body, making it roll and difficult to control, requiring other auxiliary components to balance, such as fins, rudders, etc.; [0004] (2) The vector drive of existing underwater vehicles is mostly implemented by multiple motors connected in series and parallel, with complex structure, low reliability and high power density; [0005] (3) In the case of high power such as accelerated propulsion, the existing underwater vehicle is limited by the ou...

AI Technical Summary

Problems solved by technology

[0003] (1) The unavoidable torque generated by a single propeller will give a reaction force to the aircraft body, making it roll and difficult to control, requiring other auxiliary components to balance, such as fins, rudders, etc.;

[0004] (2) The vector drive of existing underwater vehicles is mostly implemented by multiple motors connected in series and parallel, with complex structure, low reliability and high power density;

[0005] (3) In the case of high power such as accelerated propulsion, the existing underwater vehicle is limited by the output power of the motor due to the thrust generated by a single propeller, and simply increasing the output power of the motor will lead to an increase in the volume of the motor itself , which is not conducive to the solution of the water resistance problem, and the cost is high;

[0006] (4) In the case of low power or no power such as low speed cruising and taxiing, the existing underwater vehicles, because the propeller blades are mostly in a fixed unfolded state, generate greater resistance in the water, thus greatly reducing the speed of low speed cruising. , taxiing efficiency

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