Selection designing method for marine main controllable pitch propeller device

Abstract

The invention provides a type selection design method of a main controllable pitch propeller used for a ship, belonging to ship design and manufacture field. According to the existing parameters of a hull, a host machine and a gearbox, the diameter H of a hub is selected; furthermore, the blade diameter D, the blade area ratio EAR, the pitch ratio P/D, the efficiency Eta, and the blade number z of the controllable pitch propeller are determined according to the maps of fixed pitch propeller series; the mass and the movement inertia of the controllable pitch propeller blade are determined according to experimental formula; strength checking and bearing capability checking to the hub are carried out, and the application performance requirement of the controllable pitch propeller is well met. The invention obtains the type selection design proposal, with the advantages of good safety and reliability, small design fund investment, simplified program, short design period, good system performance, convenient data processing, convenient management with computers, exact and reliable data, smaller error compared with post-design, little changes on the parameters determined by the type selection design in the process of the post-technology design of the controllable pitch propeller, convenient adjustment, thus simplifying the post-design flow, shortening the period and improving the efficiency.

Description

technical field [0001] The invention relates to a design method of a propeller, in particular to a type selection design method of a marine main propulsion control pitch propeller device in the early stage. Background technique [0002] The ship's main propulsion controllable pitch propeller, hereinafter referred to as "controllable pitch propeller", as the ship's power system, the purpose of the preliminary selection design is to determine the size elements and inertia of the controllable pitch propeller according to the parameters of the hull, main engine and gearbox Elements, load carrying capacity and hydraulic system parameters. Provide basic data support for the overall design of the ship, the cost quotation of the controllable pitch propeller and the later design of the controllable pitch propeller. The pre-selection design is the first step in the post-design of the controllable pitch propeller. At present, the domestic fixed-pitch propeller design method mainly ad...

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Problems solved by technology

[0003] The present invention mainly solves the technical problems in the prior art that the controllable pitch propeller cannot be designed according to the propeller diagram and hydrodynamic characteristi

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