Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 68

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Author: Sushil K. Chaturvedi
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 48

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Author: G. L. Goglia
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 114

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Author: James M. Luckring
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 104

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Author: Willard G. Smith
Publisher:
ISBN:
Category : Aerodynamics
Languages : en
Pages : 38

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Author: C. Subba Reddy
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 126

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Book Description

Author: Ernst Heinrich Hirschel
Publisher: Springer Nature
ISBN: 366261328X
Category : Technology & Engineering
Languages : en
Pages : 458

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Book Description
Fluid mechanical aspects of separated and vortical flow in aircraft wing aerodynamics are treated. The focus is on two wing classes: (1) large aspect-ratio wings and (2) small aspect-ratio delta-type wings. Aerodynamic design issues in general are not dealt with. Discrete numerical simulation methods play a progressively larger role in aircraft design and development. Accordingly, in the introduction to the book the different mathematical models are considered, which underlie the aerodynamic computation methods (panel methods, RANS and scale-resolving methods). Special methods are the Euler methods, which as rather inexpensive methods embrace compressibility effects and also permit to describe lifting-wing flow. The concept of the kinematically active and inactive vorticity content of shear layers gives insight into many flow phenomena, but also, with the second break of symmetry---the first one is due to the Kutta condition---an explanation of lifting-wing flow fields. The prerequisite is an extended definition of separation: “flow-off separation” at sharp trailing edges of class (1) wings and at sharp leading edges of class (2) wings. The vorticity-content concept, with a compatibility condition for flow-off separation at sharp edges, permits to understand the properties of the evolving trailing vortex layer and the resulting pair of trailing vortices of class (1) wings. The concept also shows that Euler methods at sharp delta or strake leading edges of class (2) wings can give reliable results. Three main topics are treated: 1) Basic Principles are considered first: boundary-layer flow, vortex theory, the vorticity content of shear layers, Euler solutions for lifting wings, the Kutta condition in reality and the topology of skin-friction and velocity fields. 2) Unit Problems treat isolated flow phenomena of the two wing classes. Capabilities of panel and Euler methods are investigated. One Unit Problem is the flow past the wing of the NASA Common Research Model. Other Unit Problems concern the lee-side vortex system appearing at the Vortex-Flow Experiment 1 and 2 sharp- and blunt-edged delta configurations, at a delta wing with partly round leading edges, and also at the Blunt Delta Wing at hypersonic speed. 3) Selected Flow Problems of the two wing classes. In short sections practical design problems are discussed. The treatment of flow past fuselages, although desirable, was not possible in the frame of this book.

Author: Sergeǐ Mikhaǐlovich Belotserkovskiǐ
Publisher: Springer
ISBN: 1489962999
Category : Technology & Engineering
Languages : en
Pages : 236

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Author: Frederick O. Smetana
Publisher: AIAA
ISBN: 9781600860836
Category : Aerodynamics
Languages : en
Pages : 270

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Annotation This textbook and its six supporting computer programs provide theoretical modeling of the aerodynamic characteristics of wings and bodies at low Mach numbers. The approach presented directly helps engineering students improve problem-solving skills by teaching them to discern the necessary steps associated with solving analytical problems. The book also presents a justification and rationale for validating end results that leave the student with an understanding of the answer. The text differs from others by providing interactive computer programs that allow the student to conduct trade studies. It provides case-specific software that permits the student to do considerably more characteristic analysis of user-selected wings and bodies than is possible with other introductory textbooks. In addition, the algorithms are capable of working problems at a level well beyond those typically solved by hand in other textbooks. This approach allows students to determine easily the effects of modifying parameters and geometry. Another benefit of using this textbook is the understanding students gain of the capabilities of large industrial codes.

Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 64

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