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Novel shaft-less pump-jet thruster and underwater vehicle containing thruster

An underwater vehicle, shaftless structure technology, applied in the direction of ship propulsion, propulsion parts, ship parts, etc., can solve problems such as aggravating wake unevenness, improve design efficiency, optimize uniformity, and eliminate shafting vibration Effect

Inactive Publication Date: 2019-01-01
NAVAL UNIV OF ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional propeller is arranged behind the rudder, and the superimposed influence of the rudder and the podium enclosure aggravates the unevenness of the wake flow at the propeller disk surface, which has adverse effects on the propeller flow noise and the structural vibration noise caused by the bearing force

Method used

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  • Novel shaft-less pump-jet thruster and underwater vehicle containing thruster
  • Novel shaft-less pump-jet thruster and underwater vehicle containing thruster
  • Novel shaft-less pump-jet thruster and underwater vehicle containing thruster

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Embodiment Construction

[0025] The invention will be described in detail below in conjunction with specific embodiments.

[0026] Such as figure 1 As shown, the present invention provides a novel shaftless structure pump-jet propeller and an underwater vehicle containing the novel shaftless structure pump-jet propeller, wherein the underwater vehicle includes a hull 1 and a The rudder 3 at the rear of the body 1 is provided with a bridge 10, observation equipment, etc., and the inside of the body 1 is provided with structures such as a power system and an operating room. In this embodiment, the underwater vehicle is elongated and streamlined. The tail end shrinks and becomes smaller to form a contraction part 11, wherein equipment such as the rudder 3 is arranged on the contraction part 11.

[0027] The novel shaftless structure pump-jet propeller of the present invention is arranged on the outside of the hull 1 of the underwater vehicle, and is arranged in front of the rudder 3. Refers to a sectio...

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Abstract

The invention belongs to the field of ship design, in particular to a novel shaft-less pump-jet thruster and an underwater vehicle containing the thruster. By arranging the propeller in front of the rudder, the uniformity of the flow field at the paddle surface can be improved, and the propeller radiated noise and the hull radiated noise caused by the exciting force of the propeller can be effectively reduced. The longer transmission shaft system is omitted and the vibration of the shaft system is basically eliminated. The vortex eliminating tail fin can reduce the vortex intensity in the wakeflow, absorb the wake flow energy, and avoid cavitation. The axially-free pump propeller of the invention can be installed on various equipments such as unmanned and manned underwater vehicles, submarines, and the like, and has wide application prospects.

Description

technical field [0001] The invention belongs to the field of ship design and manufacture, and in particular relates to a novel shaftless structure pump-jet propeller and an underwater vehicle containing the propeller. Background technique [0002] The propellers of underwater vehicles such as submarines and uuv (unmanned submersible vehicles) are directly exposed to seawater. Due to the changes in the surrounding flow field and pressure fluctuations caused by their rotation, the resulting radiation noise is one of the main noise sources. In the radiated noise of the propeller, the low-frequency noise occupies the main component, and the low-frequency noise attenuates slowly, and the propagation distance is long. In order to improve the acoustic stealth performance of the underwater vehicle, it is urgent to reduce the signal characteristics of the low-frequency noise of the propeller. The low-frequency noise is based on the cause It can also be divided into low-frequency line...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H11/08
CPCB63H11/08B63H2011/046B63H2011/081
Inventor 于安斌叶金铭张凯王友乾史宝雍
Owner NAVAL UNIV OF ENG PLA
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