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Marine carbon fiber composite large lateral oblique propeller blade and design method thereof

A technology of composite materials and propeller blades, applied in ship design, rotating propellers, ship components, etc., can solve the problems of increasing the difficulty of excellent composite material blade models, imperfect design methods, slow independent innovation and development process, etc., to promote Engineering application, light weight, low vibration and noise effect

Pending Publication Date: 2018-08-03
NAVAL UNIV OF ENG PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] From the above research background and application status, it can be seen that the current application requirements for composite blades are very strong, but the design method is not perfect, and the processing and molding technology is also being actively explored, especially the propellers used in ships have strict requirements on vibration and noise. requirements, making its airfoil have the characteristics of high density, large side inclination and pitch, which further increases the difficulty of designing an excellent composite material blade model, resulting in a slow process of independent innovation and development

Method used

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  • Marine carbon fiber composite large lateral oblique propeller blade and design method thereof
  • Marine carbon fiber composite large lateral oblique propeller blade and design method thereof
  • Marine carbon fiber composite large lateral oblique propeller blade and design method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0044] A design method for large skewed propeller blades of marine carbon fiber composite materials, comprising:

[0045] Step 1, design the parent metal material blade of the carbon fiber composite material large-slope blade;

[0046] Step 2, determining the lay-up arrangement scheme of the carbon fiber laminate unit, including lay-up angle, lay-up sequence and lay-up thickness;

[0047] Step 3, stacking the results obtained in step 2 to generate a solid geometric model of a single carbon fiber composite material large-slope blade, and then copying the circumferential rotation to obtain several composite material large-slope blade solid geometric models;

[0048] Step 4. Calculate the hydrodynamic performance of the model obtained in step 3. The hydrodynamic performance includes hydrodynamic efficiency. Determine whether the difference between the hydrodynamic efficiency and the parent large-slope metal blade obtained in step 1 is within the preset range. If so , then go to ...

Embodiment 2

[0077] A marine carbon fiber composite large-slope propeller blade designed by the method described in Example 1: the blade is stacked by several carbon fiber laminated units to generate a solid geometric model of a single carbon fiber composite large-slope blade, and a single carbon fiber composite The solid geometric model of the high-skew blade made of material is copied in the circumferential direction to obtain N solid geometric models of the large-skewed blade of composite material, and N is the number of blades of the solid geometric model of the large-skewed blade of composite material.

[0078] The number of blades N is 5; the hydrodynamic efficiency of the blades is greater than 0.65. The carbon fiber laminate unit is composed of 6 layers of unidirectional carbon fiber woven fabrics. The angles of the woven fabrics are 0°, -30°, and -45° from bottom to top , 45°, 30° and 0°, the thickness ratio of the woven fabric layer from bottom to top is 1:2:2:1:1:1.

[0079] The...

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Abstract

The invention discloses a design method for a marine carbon fiber composite large lateral oblique propeller blade. The design method comprises the steps that a mother type metal blade of a carbon fiber composite large oblique blade is designed; a lay-up setting scheme of carbon fiber lamination units is determined; a solid geometric model of a single carbon fiber composite large oblique blade is generated by stacking the obtained results, and then solid geometric models of a plurality of carbon fiber composite large oblique blades are obtained by circumferential rotational replication; if therequirements are not met, the angle of layer, the lay-up sequence and the lay-up thickness are modified; and the model of the marine carbon fiber composite large lateral oblique propeller blade is determined. The invention further discloses a marine carbon fiber composite large lateral oblique propeller blade. According to the design method for the marine carbon fiber composite large lateral oblique propeller blade and the marine carbon fiber composite large lateral oblique propeller blade, gaps in the technology in China can be filled effectively, even design specifications can further be formed, and the independent research, popularization and application of marine high-performance composite blades in China are promoted strongly. The design method is also applied to the design of jet pumps and jet pump blades of composite.

Description

technical field [0001] The invention belongs to the technical field of ship propellers, and in particular relates to a ship-used carbon fiber composite material large-slope propeller blade and a design method thereof. Background technique [0002] Modern surface ship propellers are mainly two types of propellers and water jet propellers, both of which are metal material structures, such as nickel-aluminum bronze mainly used in military adjustable pitch propellers (referred to as adjustable pitch propellers), civilian fixed pitch propellers (referred to as fixed pitch propellers) ) Nickel-aluminum-copper (NAB) and manganese-aluminum-copper (MAB) and water jet propulsion pumps (referred to as jet pumps) are usually used in duplex stainless steel materials. The general performance characteristics of advanced ship propellers are: high hydrodynamic efficiency, high cavitation critical speed (also known as critical speed), low vibration and noise, and satisfactory strength and ser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B9/00B63H1/26
CPCB63H1/26B63B71/10Y02T90/00
Inventor 杨琼方王永生刘彦森
Owner NAVAL UNIV OF ENG PLA
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