Material &amp; Structural Characteristics of Composite Material Flexible Propeller

Lee, Sang-Gab; Hwang, Jeong-Oh; Byun, Joon‐Hyung

doi:10.3744/snak.2009.46.2.203

Cited by 3 publications

(2 citation statements)

References 2 publications

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“…국내에서도 마찬가지로 비슷한 시기에 활 발한 연구가 수행되고 있다. 대표적으로는 Lee, et al (2009a), Lee, et al (2009b) r/R 0.2 0.25 0.3 0.4 0.5 0.6 0.7 0.8 0.9 0.95 1.0 C1 4.2 2.9 2.0 1.2 1.2 1.6 2.7 4.2 6.2 7.4 8.8 G1 1.9 1.1 0.6 0.7 1.3 1.9 2.4 2.7 3.0 3.4 4.1 G2 1.1 0.6 0.8 1.6 2.2 2.8 3.5 4.3 5.4 6.1 6.8 D1 5.9 2.5 1.2 1.9 2.5 2.5 2.3 4.3 7.3 9.4 12.2…”

Section: 서 론unclassified

Effect of Manufacturing Accuracy of Flexible Propeller on the Open Water Performance

Lee¹,

Jang²,

Lee³

et al. 2013

Journal of the Society of Naval Architects of Korea

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The blades of flexible propellers are formed by overlaying and adhering many layers of thin glass-fiber fabric sheets, are compressed and dried in the rigid mold. The current manufacturing process can not avoid the rather irregular deformation of the blades composed of non-isotropic non-uniform fabric structures, and inevitably introduces the different shape-forming errors between blades. In this paper, several flexible model propellers are precisely measured with three-dimensional optical instrument and compared with the original design geometry. The model propellers with the as-measured geometry are evaluated with the lifting-surface-theory-based propeller analysis code. The open-water performance are presented and discussed. The importance of the manufacturing accuracy is addressed to be able to apply the flexible propellers for propulsion of marine vehicles.

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Section: 서 론unclassified

Effect of Manufacturing Accuracy of Flexible Propeller on the Open Water Performance

Lee¹,

Jang²,

Lee³

et al. 2013

Journal of the Society of Naval Architects of Korea

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“…In addition, Airborne Composite of the Netherlands manufactured composite propellers for their naval vessels, and Howaldtswerke-Deutsche Werft, a German shipbuilding company, confirmed the effects of weight and noise reduction by manufacturing composite propellers for submarines [6]. Lee et al manufactured composite propellers using compression molding process, and their hydrodynamic performances and radiation noise were measured [7,8]. Jang et al developed a new design procedure for a flexible propeller under steady conditions, using a coupled vortex lattice method (VLM)-FEM, and analyzed a simply supported flexible plate under a uniformly distributed load [9,10].…”

Section: Introductionmentioning

confidence: 99%

Performance Prediction of Composite Marine Propeller in Non-Cavitating and Cavitating Flow

et al. 2022

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The purpose of this study is to compare the performance of specific composite propellers with different ply angles from a cavitation inception speed (CIS) perspective. Composite propellers have a relatively large deformation compared to existing propellers manufactured using nickel aluminum bronze alloys. Therefore, it is necessary to understand the correlation between the stacking method of the composite materials and the propeller performance in order to design composite propellers that provide sufficient strength and generate the desired deformation. In addition, in the case of composite propellers, the deformation is closely related to the CIS because it can delay or accelerate the occurrence of tip vortex cavitation (TVC). Fluid-structure interaction (FSI) analysis of the model-scale composite propellers is performed using a coupled computational fluid dynamics (CFD)-finite element method (FEM) to examine the influence of the lamination direction on the deformation of the composite propeller. Finally, a hydroacoustic analysis of the noise generated and propagated by a composite propeller in non-cavitating and cavitating flows is conducted. The study found that some deformed parameters of the propeller affect the performance, the deformation of the composite propeller itself has no significant effect on the sound pressure level, and the volume change of cavitation has a decisive effect on the variation of the sound pressure level radiated from the composite propeller. These results can improve the feasibility, conceptual design, performance, and manufacturing methods for composite propellers.

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Production & Performance Assessment of Composite Material Flexible Propeller

Lee

Byun²,

Paik³

et al. 2009

Journal of the Society of Naval Architects of Korea

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The researches on the development of composite material underwater vehicle propeller have been actively attempted for the reduction of radiation noise with outstanding damping effects. Composite material propellers have almost been designed and produced by the foreign experts, and it is difficult to obtain the related informations about their flow, vibration, material characteristics because they are treated as the secrets with close relationship to the military technology, especially in the case of underwater vehicles. For the security of domestic manufacture of composite material propeller and the comparison and examination of its performance and radiation noise characteristics with those of German CONTUR composite material propeller, two propellers were self-produced according to the fiber weaving and array using compressible molding process and their self performances and radiation noise characteristics were measured. The mean fluctuations of blade tip of self-produced composite material propeller were increased and the radiation noises in the low frequency band were reduced compared to those of CONTUR, which could be estimated as the change of material characteristics and also be thought to be used for the future research informations.

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Material & Structural Characteristics of Composite Material Flexible Propeller

Cited by 3 publications

References 2 publications

Effect of Manufacturing Accuracy of Flexible Propeller on the Open Water Performance

Effect of Manufacturing Accuracy of Flexible Propeller on the Open Water Performance

Performance Prediction of Composite Marine Propeller in Non-Cavitating and Cavitating Flow

Production & Performance Assessment of Composite Material Flexible Propeller

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