Computational Study of High Speed Blade-vortex Interaction

Computational Study of High Speed Blade-vortex Interaction PDF Author: Erkan Yildirim
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Computational Study of High Speed Blade-vortex Interaction

Computational Study of High Speed Blade-vortex Interaction PDF Author: Erkan Yildirim
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Full-Potential Modeling of Blade-Vortex Interactions

Full-Potential Modeling of Blade-Vortex Interactions PDF Author: Henry E. Jones
Publisher:
ISBN:
Category : Unsteady flow (Aerodynamics)
Languages : en
Pages : 96

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Book Description
A study of the full-potential modeling of a blade-vortex interaction was made. A primary goal of this study was to investigate the effectiveness of the various methods of modeling the vortex. The model problem restricts the interaction to that of an infinite wing with an infinite line vortex moving parallel to its leading edge. This problem provides a convenient testing ground for the various methods of modeling the vortex while retaining the essential physics of the full three-dimensional interaction. A full-potential algorithm specifically tailored to solve the blade-vortex interaction (BVI) was developed to solve this problem. The basic algorithm was modified to include the effect of a vortex passing near the airfoil. Four different methods of modeling the vortex were used: (1) the angle-of-attack methods, (2) the lifting-surface method, (3) the branch-cut method, and (4) the split-potential method. A side-by-side comparison of the four models was conducted. these comparisons included comparing generated velocity fields, a subcritical interaction, and a critical interaction. The subcritical and critical interactions are compared with experimentally generate results. The split-potential model was used to make a survey of some of the more critical parameters which affect the BVI.

Computational Investigation of Blade Vortex Interaction Noise

Computational Investigation of Blade Vortex Interaction Noise PDF Author: See-Ho Wong
Publisher:
ISBN:
Category :
Languages : en
Pages :

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The Investigation of Blade-vortex Interaction Noise Using Computational Fluid Dynamics

The Investigation of Blade-vortex Interaction Noise Using Computational Fluid Dynamics PDF Author: Romuald Morvant
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 199

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Scientific and Technical Aerospace Reports

Scientific and Technical Aerospace Reports PDF Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 602

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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

An Experimental Investigation of the Parallel Blade-vortex Interaction

An Experimental Investigation of the Parallel Blade-vortex Interaction PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 40

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Applied Mechanics Reviews

Applied Mechanics Reviews PDF Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 348

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Rotorcraft Aeromechanics

Rotorcraft Aeromechanics PDF Author: Wayne Johnson
Publisher: Cambridge University Press
ISBN: 1107355281
Category : Technology & Engineering
Languages : en
Pages : 949

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Book Description
A rotorcraft is a class of aircraft that uses large-diameter rotating wings to accomplish efficient vertical take-off and landing. The class encompasses helicopters of numerous configurations (single main rotor and tail rotor, tandem rotors, coaxial rotors), tilting proprotor aircraft, compound helicopters, and many other innovative configuration concepts. Aeromechanics covers much of what the rotorcraft engineer needs: performance, loads, vibration, stability, flight dynamics, and noise. These topics include many of the key performance attributes and the often-encountered problems in rotorcraft designs. This comprehensive book presents, in depth, what engineers need to know about modelling rotorcraft aeromechanics. The focus is on analysis, and calculated results are presented to illustrate analysis characteristics and rotor behaviour. The first third of the book is an introduction to rotorcraft aerodynamics, blade motion, and performance. The remainder of the book covers advanced topics in rotary wing aerodynamics and dynamics.

Journal of the American Helicopter Society

Journal of the American Helicopter Society PDF Author: American Helicopter Society
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 332

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Helicopter Theory

Helicopter Theory PDF Author: Wayne Johnson
Publisher: Courier Corporation
ISBN: 0486131823
Category : Technology & Engineering
Languages : en
Pages : 1122

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Book Description
Monumental engineering text covers vertical flight, forward flight, performance, mathematics of rotating systems, rotary wing dynamics and aerodynamics, aeroelasticity, stability and control, stall, noise, and more. 189 illustrations. 1980 edition.