NACA 0015 Wing Pressure and Trailing Vortex Measurements PDF Download
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Author: Kenneth W. McAlister
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 150
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Book Description
Author: Kenneth W. McAlister
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 150
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Book Description
Author:
Publisher: DIANE Publishing
ISBN: 142891546X
Category :
Languages : en
Pages : 148
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Book Description
Author: National Aeronautics and Space Adm Nasa
Publisher:
ISBN: 9781731330109
Category :
Languages : en
Pages : 150
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Book Description
A NACA 0015 semispan wing was placed in a low-speed wind tunnel, and measurements were made of the pressure on the upper and lower surface of the wing and of velocity across the vortex trailing downstream from the tip of the wing. Pressure data were obtained for both 2-D and 3-D configurations. These data feature a detailed comparison between wing tips with square and round lateral edges. A two-component laser velocimeter was used to measure velocity profiles across the vortex at numerous stations behind the wing and for various combinations of conditions. These conditions include three aspect ratios, three chord lengths, a square- and a round lateral-tip, presence or absence of a boundary-layer trip, and three image plane positions located opposite the wing tip. Both pressure and velocity measurements were made for the angles of attack 4 deg less than or equal to alpha less than or equal to 12 deg and for Reynolds numbers 1 x 10(exp 6) less than or equal to Re less than or equal to 3 x 10(exp 6). Mcalister, K. W. and Takahashi, R. K. Ames Research Center LOW SPEED; PRESSURE MEASUREMENT; SEMISPAN MODELS; TRAILING EDGES; VELOCITY MEASUREMENT; VORTICES; WING TIPS; WINGS; ANGLE OF ATTACK; ASPECT RATIO; BOUNDARY LAYERS; LASER DOPPLER VELOCIMETERS; PRESSURE DISTRIBUTION; REYNOLDS NUMBER; VELOCITY DISTRIBUTION; WIND TUNNEL TESTS; WING PROFILES...
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 150
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Book Description
Author: United States. National Aeronautics and Space Administration
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 148
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Author:
Publisher:
ISBN:
Category : Astronautics
Languages : en
Pages : 230
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 134
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Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 456
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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.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309058791
Category : Science
Languages : en
Pages : 1100
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Book Description
Author: Konstantinos Kanistras
Publisher: Springer
ISBN: 3319678523
Category : Technology & Engineering
Languages : en
Pages : 138
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Book Description
This book focuses on using and implementing Circulation Control (CC) - an active flow control method used to produce increased lift over the traditionally used systems, like flaps, slats, etc. - to design a new type of fixed-wing unmanned aircraft that are endowed with improved aerodynamic efficiency, enhanced endurance, increased useful payload (fuel capacity, battery cells, on-board sensors) during cruise flight, delayed stall, and reduced runway during takeoff and landing. It presents the foundations of a step-by-step comprehensive methodology from design to implementation and experimental testing of Coandǎ based Circulation Control Wings (CCWs) and CC system, both integral components of the new type of aircraft, called Unmanned Circulation Control Air Vehicle. The methodology is composed of seven coupled phases: theoretical and mathematical analysis, design, simulation, 3-D printing/prototyping, wind tunnel testing, wing implementation and integration, and flight testing. The theoretical analysis focuses on understanding the physics of the flow and on defining the design parameters of the geometry restrictions of the wing and the plenum. The design phase centers on: designs of Coandǎ surfaces based on wing geometry specifications; designing and modifying airfoils from well-known ones (NACA series, Clark-Y, etc.); plenum designs for flow uniformity; dual radius flap designs to delay flow separation and reduce cruise drag. The simulation phase focuses on Computational Fluid Dynamics (CFD) analysis and simulations, and on calculating lift and drag coefficients of the designed CCWs in a simulation environment. 3-D printing and prototyping focuses on the actual construction of the CCWs. Wind tunnel testing centers on experimental studies in a laboratory environment. One step before flight testing is implementation of the qualified CCW and integration on the UAV platform, along with the CC system. Flight testing is the final phase, where design validation is performed. This book is the first of its kind, and it is suitable for students and researchers interested in the design and development of CCWs for small-scale aircraft. Background knowledge on fundamental Aerodynamics is required.
