• Title, Summary, Keyword: 프로펠러 설계

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Propeller Performance Analysis for Human Powered Aircraft (인간동력 항공기용 프로펠러 성능해석)

  • Park, Poo-Min
    • Aerospace Engineering and Technology
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    • v.12 no.2
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    • pp.193-201
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    • 2013
  • Propeller is an important component of Human Powered Aircraft (HPA) propulsion system. HPA uses large diameter low rotational speed propeller to get high propeller efficiency. The propeller was designed by HPA propeller designing program. The propeller pitch is adjustable by rotating the blade axis angle at ground. Performance of the propeller for various parameters are analysed by the same program used for design. Off-design condition performance was also checked including pilot power change and flight speed change. The propeller was manufactured in ultra-light structure using carbon composite material down to 950g. The propeller was ground tested on ironbird and installed on KARI HPA. Finally the HPA flew 291m with this propeller.

Design of optimum propeller for target drone II (무인 표적기 프로펠러의 최적 설계 II)

  • 성형건;노태성
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • pp.246-249
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    • 2003
  • The propeller of the propulsion system for a target drone has been designed. Vortex theory has been applied to the propeller design method. This method analyze the propeller performance according to the design parameters. The optimum design has been aimed to maximize the efficiency. The performance of the designed propeller has been analyzed.

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Aerodynamic Design and Performance Analysis of a Propeller at Low Reynolds Number Flow Conditions (저 레이놀즈수 유동조건에서의 프로펠러 공력설계 및 성능해석)

  • Yun, Senghyun;Han, Cheolheui
    • Journal of Aerospace System Engineering
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    • v.9 no.1
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    • pp.7-11
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    • 2015
  • 최근 무인기와 초소형비행체를 위한 프로펠러 연구수요가 증가하고 있다. 일반적인 프로펠러와 다른 점은 저 레이놀즈수 유동조건에서 구동된다는 점이다. 본 연구는 저 레이놀즈수 유동조건에서 비행하는 인간 동력 항공기를 위한 프로펠러 공력설계 및 성능해석에 관한 연구다. 저 레이놀즈수 유동조건에서 발생하는 공력천이현상을 고려한 3차원 공력특성 변화를 정확히 반영하지 못하는 상용 프로그램의 단점을 보완하여 프로펠러 공력설계 및 성능해석이 가능한 프로그램을 개발했다. 개발된 프로그램으로 인간 동력 항공기 설계요구조건에 충족하는 프로펠러 공력설계 및 성능해석을 수행하였다. 또한 프로펠러 회전수와 장착각도 변화에 따른 성능변화를 예측하여 비행당시 상황에 따라 비행 가능한 성능출력이 가능하도록 하였다.

HPA propeller thrust design through the blade section analysis (블레이드 섹션 분석을 통한 인력기용 프로펠러의 설계)

  • Lee, Seong-Heon;Park, Jang-Ho;Lee, Yeong-Hui;Choe, Seong-Im
    • Proceeding of EDISON Challenge
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    • pp.45-48
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    • 2012
  • 본 연구는 인력기를 개발함에 있어서 이에 적합한 프로펠러의 형상을 설계하기 위하여 진행되었다. 인력기는 인간을 유일한 동력원으로 사용하기 때문에 적은 동력, 낮은 RPM을 가지고 비행을 하게 된다. 이에 따라 기존의 항공기와는 다른 특성 및 형상을 가지는 프로펠러 개발의 필요성이 인지되었다. 본 연구에서는 설계하고자 하는 인력기의 제원에 맞는 프로펠러의 특성을 설정한 뒤, 프로펠러의 블레이드를 수 개의 airfoil section으로 나누고, 각 섹션에 대한 공력 특성을 프로펠러 이론 및 Edison CFD를 통하여 계산 및 유추하였다. 이 계산 결과를 토대로 구한 각 airfoil section의 정보를 통하여 프로펠러의 형상을 얻어 낼 수 있었으며, 최종적으로 이를 ANSYS Fluent, CFX와 같은 상용 프로그램을 이용하여 분석함으로써 설계 전에 목표로 하였던 프로펠러의 성능에 도달하였는가를 확인할 수 있었다.

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The Study of Advanced Propeller Blade for Next Generation Turboprop Aircraft -Part I. Aerodynamic Design and Analysis (차세대 터보프롭 항공기용 최신 프로펠러 블레이드 연구 -Part I. 공력 설계 및 해석)

  • Choi, Won
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.40 no.12
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    • pp.1017-1024
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    • 2012
  • The aerodynamic design and analysis on advanced propeller with blade sweep was performed for recent turboprop aircraft. HS1 airfoil series are selected as a advanced propeller blade airfoil. Adkins method is used for aerodynamic design and performance analysis with respect to the design point. Adkins method is based on the vortex-blade element theory which design the propeller to satisfy the condition for minimum energy loss. Propeller geometry is generated by varying chord length and pitch angle at design point of target aircraft. Advanced propeller is designed by apply the modified chord length, the tip sweep which is based on the geometry of conventional propeller. The aerodynamic characteristics of the designed Advanced propeller were verified by CFD(Computational Fluid Dynamic) and evaluated to be properly designed.

High-efficiency propeller development for Multicopter type UAV (멀티콥터형 무인기용 고효율 프로펠러 개발)

  • Wie, Seong-Yong;Kang, Hee Jung;Kim, Taejoo;Kee, Young-Jung;Song, Jaerim
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.45 no.7
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    • pp.581-593
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    • 2017
  • In order to develop high efficiency propeller for multicopter type UAV, we designed, analyzed and tested aerodynamic and structural dynamics. For the design of the high efficiency propeller, the optimum design method was applied for the determination of the airfoil and the three-dimensional planform is designed to reduce induced power of the propeller. The flight suitability of the derived shape was determined through structural design and analysis. The rotation test was performed to confirm the performance of the analytically designed shape. In this paper, we propose a procedural propeller design methodology using these design analysis test methods.

The Study of Propeller Design and Aerodynamics Characteristics for FAR25 Grade Turboprop Aircraft (FAR25급 터보프롭 항공기 프로펠러 설계 및 공력특성 연구)

  • Choi, Won;Jeong, In-Myon;Kim, Ji-Hong;Lee, Il-Woo
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • pp.648-651
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    • 2010
  • Propeller shall have high efficiency and improved aerodynamic characteristics to get the thrust to fly at high speed for the FAR25 turboprop aircraft. That is way Clark-Y airfoil which is used to conventional turboprop aircraft propeller is selected as a blade airfoil. Javaprop program based on the Adkins method is used for aerodynamic design and analysis of propeller, Adkins method is based on the vortex-blade element theory which design the propeller to satisfy the condition for minimum energy loss. Slipstream displacement don't change and consider a rigid body. High efficiency propeller geometry is generated by varying chord length and pitch angle at design point of FAR25 turboprop aircraft. The propeller design results indicate that could be applied to the FAR25 turboprop aircraft, through analysis of propeller aerodynamic characteristics using the CFD(Computational Fluid Dynamic).

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Design on High Efficiency and Light Composite Propeller Blade of Regional Aircraft (중형항공기급 고효율 경량화 복합재 프로펠러 블레이드 설계 연구)

  • Kong, Chang-Duk;Lee, Kyung-Sun;Park, Hyun-Bum;Choi, Won
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • pp.253-258
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    • 2012
  • In this study, designs of the high efficiency composite propeller blade for a high speed turboprop aircraft, which will be used for a next generation regional commercial aircraft in Korea, are performed. Both the vortex theory and the blade element theory are used for preliminary aerodynamic design and performance analysis of the propeller. Then the aerodynamic design result is confirmed through performance analysis using a commercial CFD code, ANSYS. The carbon/epoxy composite materials is used, and the skin-spar-foam sandwich type structure is adopted for improvement of lightness and structural stability. Finally, it is investigated that the proposed propeller blade has high efficiency and structural safety through both aerodynamic and structural analysis and experimental test of a prototype propeller blade.

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Study on Propeller Design for Fishing Vessel's High Efficiency Standard Series Propeller (KF Series) (어선용 고효율 표준 시리즈(KF 시리즈) 프로펠러를 위한 설계 연구)

  • Lee, Won-Joon;Kim, Moon-Chan;Chun, Jang-Ho;Jang, Jin-Yeol;Mun, Won-Jun;Lee, Chang-Sup
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.14 no.2
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    • pp.73-80
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    • 2011
  • The present study deals with the propeller design for the standard new propeller series so called KF Series for 52ton class fishing vessel. The MAU or B series have been usually used for the fishing vessel's propeller, which are to be improved in consideration of the efficiency as well as the cavitation point of view. The high technology of propeller design has been applied to the design of 52ton class fishing vessel's propeller in the present study. The new designed series propellers will be validated by the experimental results whose data will be also used for the new series chart.

A Propeller Design Method with a New Blade Section : Applied to Container Ships (새로운 날개단면을 이용한 프로펠러 설계법 - 콘테이너선에 응용 -)

  • J.T. Lee;M.C. Kim;J.W. Ahn;S.H. Van;H.C. Kim
    • Journal of the Society of Naval Architects of Korea
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    • v.28 no.2
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    • pp.40-51
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    • 1991
  • A Propeller design method using the newly developed blade section(KH18), which behaves better cavitation characteristics, is presented. Experimental results for two-dimensional foil sections show that the lift-drag curve and the cavitation-free bucket diagram of the new blade section are wider comparing to those of the existion NACA sections. This characteristic of the new section is particularly important for marine propeller applications since angle of attack variation of the propeller blade operating behind a non-uniform ship's wake is relatively large. A lifting surface theory is used for the design of a propeller with the developed section for a 2700 TEU container ship. Since the most suitable chordwise loading shape is not known a priori, chordwise loading shape is chosen as a design parameter. Five propellers with different chordwise loading shapes and different foil sections are designed and tested in the towing tank and cavitation tunnel at KRISO. It is observed by a series of extensive model tsets that the propeller(KP197) having the chordwise loading shape, which has less leading edge loading at the inner radii and more leading edge loading at the outer radii of 0.7 radius, has higher propulsive efficiency and better cavitation characteristics. The KP197 propeller shows 1% higher efficiency, 30% cavitation volume reduction and 9% reduction of fluctuating pressure level comparing to the propeller with an NACA section. More appreciable efficiency gain for the new blade section propeller would be expected by reduction of expanded blade area considering the better cavitation characteristics of the new blade section.

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