Identification method of dual-propeller propelling performance of ship

An identification method and ship technology, applied in ship propulsion, propulsion parts, ship parts, etc., can solve problems such as unreachable performance and affecting propeller propulsion performance, and achieve the effects of easy implementation, large steering fluctuation and effective technology

Active Publication Date: 2019-08-02
HOHAI UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, for the actual constructed ship, its performance has been basically determined, and it is often not completely consistent with the performance of the pre-designed research. Uncontrollable reasons such as processing errors may affect the propulsion performance of the propeller.

Method used

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  • Identification method of dual-propeller propelling performance of ship
  • Identification method of dual-propeller propelling performance of ship
  • Identification method of dual-propeller propelling performance of ship

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Embodiment Construction

[0035] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0036] like Figure 1 to Figure 3 As shown, the double-screw propulsion performance identification method of the present invention establishes the propeller output performance function relationship, and obtains the two-screw propulsion performance output relationship. Generally speaking, the thrust and pitch ratio of the propeller are important parameters for studying its performance, but In ship motion control, the control quantity is generally the speed of the sculls, and the intuitive feedback of the ship's steering stability is the steering speed. Therefore, establishing the functional relationship between the two can intuitively reflect the output performance of the propeller.

[0037] The propulsion performance identification adopts the tes...

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Abstract

The invention discloses an identification method of dual-propeller propelling performance of a ship. According to the identification method of the dual-propeller propelling performance of the ship, apropeller output performance function relationship is established, a dual-propeller propelling performance output relationship is obtained, a fitting function relationship r = k*n of the rotating speed and the steering speed is established, wherein k is the fitting coefficient, the propeller output performance is intuitively reflected, the fitting coefficient k in the fitting function expression of a dual-propeller performance test is utilized to express the dual-propeller propelling performance output relationship. The identification method of the dual-propeller propelling performance of theship has the beneficial effects that the propeller output performance is accurately and effectively reflected, the dual-propeller propelling performance relationship is obtained, a reliable parameterbasis is provided for navigation control, and the navigation performance of the ship is optimized.

Description

technical field [0001] The invention relates to a method for identifying the propulsion performance of two propellers of a ship, which belongs to the technical field of ships. Background technique [0002] Nowadays, with the development of modern shipbuilding and shipping, the research on the motion performance of ships has attracted much attention, and the performance of the propeller as its main driving mechanism will directly affect the sailing performance of the ship. Especially in the case of double propellers and multiple propellers, due to factors such as processing and installation, the propulsion performance of each propeller may not be consistent with the design standard. It may cause the navigation of the ship to be different from the pre-conceived, and even dangerous phenomena such as strong vibration may occur, which will affect the control of the movement of the ship and the safety of the ship itself. Therefore, it is necessary to understand the propulsion per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B9/08B63H5/08
CPCB63H5/08B63B79/00
Inventor 徐鹏飞沈雅琳骆佳成丁延旭孟昊程晨
Owner HOHAI UNIV
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