A Theoretical and Experimental Investigation of Vortex Flow Control for High Lift Generation PDF Download
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Author: Richard P White (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 190
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Book Description
A theoretical and experimental program was conducted to investigate the effects of vortex flow control on the performance characteristics of a low aspect ratio, highly-swept lifting surface. Experimentally, it was determined that the lift-curve slope and the maximum lift coefficient could be increased above that of a basic plan-form by the use of leading edge separators. A theoretical prediction technique based on a modification of a doublet vortex lattice approach to account for flow separation and external interacting vortices was found to realistically predict the measured lifting characteristics of the airfoil at high angles of attack. Favorable correlation between measured and predicted results was shown both in the total lift and in the pressure distributions. The theoretical results suggest that modest refinements can make the analysis a versatile tool for the study of the performance and maneuverability characteristics of low aspect ratio aircraft at high angles of attack. (Author).
Author: Richard P White (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 190
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Book Description
A theoretical and experimental program was conducted to investigate the effects of vortex flow control on the performance characteristics of a low aspect ratio, highly-swept lifting surface. Experimentally, it was determined that the lift-curve slope and the maximum lift coefficient could be increased above that of a basic plan-form by the use of leading edge separators. A theoretical prediction technique based on a modification of a doublet vortex lattice approach to account for flow separation and external interacting vortices was found to realistically predict the measured lifting characteristics of the airfoil at high angles of attack. Favorable correlation between measured and predicted results was shown both in the total lift and in the pressure distributions. The theoretical results suggest that modest refinements can make the analysis a versatile tool for the study of the performance and maneuverability characteristics of low aspect ratio aircraft at high angles of attack. (Author).
Author: Richard P White (Jr)
Publisher:
ISBN:
Category :
Languages : en
Pages : 210
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Book Description
An experimental research program was conducted to investigate methods of improving the performance characteristics of low-aspect ratio, swept-wing surfaces in the post-stall region. Wind tunnel tests were conducted with an unmodified wing panel and with snags, strakes and combinations thereof affixed to the panel. The prediction of changes in the performance characteristics by simplified theoretical analyses is discussed with regard to the observed complexity of the flow field produced by the vortex generators.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 994
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1142
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Author: North Atlantic Treaty Organization. Advisory Group for Aeronautical Research and Development
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 32
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 100
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: American Helicopter Society
Publisher:
ISBN:
Category : Helicopters
Languages : en
Pages : 638
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Book Description
Author: Jochen Wild
Publisher: CRC Press
ISBN: 1000532569
Category : Technology & Engineering
Languages : en
Pages : 308
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Book Description
This book presents a detailed look at high-lift aerodynamics, which deals with the aerodynamic behavior of lift augmentation means from various approaches. After an introductory chapter, the book discusses the physical limits of lift generation, giving the lift generation potential. It then explains what is needed for an aircraft to fly safely by analyzing the high-lift-related requirements for certifying an aircraft. Aircraft needs are also analyzed to improve performance during takeoff, approach, and landing. The book discusses in detail the applied means to increase the lift coefficient by either passive and active high-lift systems. It includes slotless and slotted high-lift flaps, active and passive vortex generating devices, boundary and circulation control, and powered lift. Describing methods that are used to evaluate and design high-lift systems in an aerodynamic sense, the book briefly covers numerical as well as experimental simulation methods. It also includes a chapter on the aerodynamic design of high-lift systems. FEATURES Provides an understanding of the physics of flight during takeoff and landing from aerodynamics to flight performance and from simulation to design Discusses the physical limits of lift generation, giving the lift generation potential Concentrates on the specifics of high-lift aerodynamics to provide a first insight Analyzes aircraft needs to improve performance during takeoff, approach, and landing Focuses on civil transport aircraft applications but also includes the associated physics that apply to all aircraft This book is intended for graduate students in aerospace programs studying advanced aerodynamics and aircraft design. It also serves as a professional reference for practicing aerospace and mechanical engineers who are working on aircraft design issues related to takeoff and landing.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 712
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Book Description
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA)
