Analytic Methods In Aircraft Aerodynamics

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A Wind-tunnel Evaluation of Analytical Techniques for Predicting Static Stability and Control Characteristics of Flexible Aircraft

Irving Abel
A Wind tunnel Evaluation of Analytical Techniques for Predicting Static Stability and Control Characteristics of Flexible Aircraft Book PDF

Author : Irving Abel
Publisher : Unknown
Page : 76 pages
File Size : 53,6 Mb
Release : 1972
Category : Airplanes
ISBN : UIUC:30112106882969

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A Wind-tunnel Evaluation of Analytical Techniques for Predicting Static Stability and Control Characteristics of Flexible Aircraft by Irving Abel Pdf

An experimental evaluation of analytical techniques for predicting certain stability and control characteristics of a large flexible aircraft is presented. Analytical methods based on both the model approach and flexibility influence coefficients are developed to predict the aerodynamic characteristics of a flexible airplane. These methods are then applied to a flexibly scaled model of a supersonic transport configuration. Comparisons of wind-tunnel data, calculations based on the model approach, and flexibility influence coefficients are presented over the Mach number range from 0.6 to 2.7. An examination of the results obtained from this study indicates that both analytical techniques predict reasonably well the effect of flexibility on the basic longitudinal characteristics and that both techniques give generally comparable results.

Putting the Aero Back Into Aeroelasticity

Anonim
Putting the Aero Back Into Aeroelasticity Book PDF

Author : Anonim
Publisher : Unknown
Page : 26 pages
File Size : 42,8 Mb
Release : 2000
Category : Electronic
ISBN : NASA:31769000634124

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Putting the Aero Back Into Aeroelasticity by Anonim Pdf

The lack of progress in understanding the physics of rotorcraft loads and vibration over the last 30 years is addressed in this paper. As befits this extraordinarily difficult problem, the reasons for the lack of progress are complicated and difficult to ascertain. It is proposed here that the difficulty lies within at least three areas: 1) a loss of perspective as to what are the key factors in rotor loads and vibration, 2) the overlooking of serious unsolved problems in the field, and 3) cultural barriers that impede progress. Some criteria are suggested for future research to provide a more concentrated focus on the problem.

Performance of the Jet Transport Airplane

Trevor M. Young
Performance of the Jet Transport Airplane Book PDF

Author : Trevor M. Young
Publisher : John Wiley & Sons
Page : 688 pages
File Size : 54,9 Mb
Release : 2019-10-24
Category : Technology & Engineering
ISBN : 9781119682783

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Performance of the Jet Transport Airplane by Trevor M. Young Pdf

Performance of the Jet Transport Airplane: Analysis Methods, Flight Operations, and Regulations presents a detailed and comprehensive treatment of performance analysis techniques for jet transport airplanes. Uniquely, the book describes key operational and regulatory procedures and constraints that directly impact the performance of commercial airliners. Topics include: rigid body dynamics; aerodynamic fundamentals; atmospheric models (including standard and non-standard atmospheres); height scales and altimetry; distance and speed measurement; lift and drag and associated mathematical models; jet engine performance (including thrust and specific fuel consumption models); takeoff and landing performance (with airfield and operational constraints); takeoff climb and obstacle clearance; level, climbing and descending flight (including accelerated climb/descent); cruise and range (including solutions by numerical integration); payload–range; endurance and holding; maneuvering flight (including turning and pitching maneuvers); total energy concepts; trip fuel planning and estimation (including regulatory fuel reserves); en route operations and limitations (e.g. climb-speed schedules, cruise ceiling, ETOPS); cost considerations (e.g. cost index, energy cost, fuel tankering); weight, balance and trim; flight envelopes and limitations (including stall and buffet onset speeds, V–n diagrams); environmental considerations (viz. noise and emissions); aircraft systems and airplane performance (e.g. cabin pressurization, de-/anti icing, and fuel); and performance-related regulatory requirements of the FAA (Federal Aviation Administration) and EASA (European Aviation Safety Agency). Key features: Describes methods for the analysis of the performance of jet transport airplanes during all phases of flight Presents both analytical (closed form) methods and numerical approaches Describes key FAA and EASA regulations that impact airplane performance Presents equations and examples in both SI (Système International) and USC (United States Customary) units Considers the influence of operational procedures and their impact on airplane performance Performance of the Jet Transport Airplane: Analysis Methods, Flight Operations, and Regulations provides a comprehensive treatment of the performance of modern jet transport airplanes in an operational context. It is a must-have reference for aerospace engineering students, applied researchers conducting performance-related studies, and flight operations engineers.

Elementary Flight Dynamics with an Introduction to Bifurcation and Continuation Methods

Nandan K. Sinha,N. Ananthkrishnan
Elementary Flight Dynamics with an Introduction to Bifurcation and Continuation Methods Book PDF

Author : Nandan K. Sinha,N. Ananthkrishnan
Publisher : CRC Press
Page : 389 pages
File Size : 54,8 Mb
Release : 2021-09-24
Category : Science
ISBN : 9781000441901

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Elementary Flight Dynamics with an Introduction to Bifurcation and Continuation Methods by Nandan K. Sinha,N. Ananthkrishnan Pdf

Elementary Flight Dynamics with an Introduction to Bifurcation and Continuation Methods, Second Edition is aimed at senior undergraduate and graduate students of aerospace and mechanical engineering. The book uses an optimal mix of physical insight and mathematical presentation to illustrate the core concepts of professional aircraft flight dynamics. An updated version of the aerodynamic model is presented with the corrected definition of rate (dynamic) derivatives, supported with examples of real-life airplanes and related data and by open-source computational tools. It introduces bifurcation and continuation methods as a tool for flight dynamic analysis. FEATURES Covers an up-to-date, corrected, ‘clean’ presentation of the elements of flight dynamics Presents a blend of theory, practice and application with real-life practical examples Provides a unique viewpoint of applied aerodynamicists and aircraft designers Introduces bifurcation and continuation methods as a tool for flight dynamics analysis Includes a computational tool with real-life examples carried throughout the chapters The book is enriched with case studies of flight dynamics of a bird’s flight, of a six-seater rigid-wing airplane from a design perspective, and airship dynamics to highlight the modal behaviour of similar-looking vehicles that are distinct from each other. Excerpts from reviews of the first edition: "Flight dynamics is a topic that can cause difficulties to aerospace engineering students. This text leads the reader gently through the material with plenty of practical examples and student exercises. As such, it is easy to follow the material and to gradually develop a deep understanding of a demanding topic. The book is ideal for undergraduate students and is a good text for graduate students."––James F. Whidborne, Cranfield University, United Kingdom "The book covers all the aspects of flight dynamics traditionally found in such texts interspersed with examples of the treatment of features of current air vehicles....In my opinion, this book covers the subject comprehensively and is a desirable reference source for undergraduates and graduates alike."––R.J. Poole, MRAeS, The Aeronautical Journal, June 2014 "The book design and the methodology of interpretation are directed to a wide range of target audience/population interested in studying the dynamics of flight. Given the scale and organization of information, the book will also be a useful tool in the analysis of flight dynamics for professionals in this field. The book is sure to appeal to anyone interested in the dynamics of flight."––Jaroslav Salga, Advances in Military Technology, June 2014

Introduction to Transonic Aerodynamics

Roelof Vos,Saeed Farokhi
Introduction to Transonic Aerodynamics Book PDF

Author : Roelof Vos,Saeed Farokhi
Publisher : Springer
Page : 555 pages
File Size : 48,5 Mb
Release : 2015-03-04
Category : Technology & Engineering
ISBN : 9789401797474

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Introduction to Transonic Aerodynamics by Roelof Vos,Saeed Farokhi Pdf

Written to teach students the nature of transonic flow and its mathematical foundation, this book offers a much-needed introduction to transonic aerodynamics. The authors present a quantitative and qualitative assessment of subsonic, supersonic and transonic flow around bodies in two and three dimensions. The book reviews the governing equations and explores their applications and limitations as employed in modeling and computational fluid dynamics. Some concepts, such as shock and expansion theory, are examined from a numerical perspective. Others, including shock-boundary-layer interaction, are discussed from a qualitative point of view. The book includes 60 examples and more than 200 practice problems. The authors also offer analytical methods such as Method of Characteristics (MOC) that allow readers to practice with the subject matter. The result is a wealth of insight into transonic flow phenomena and their impact on aircraft design, including compressibility effects, shock and expansion waves, shock-boundary-layer interaction and aeroelasticity.

NASA Technical Memorandum

Anonim
NASA Technical Memorandum Book PDF

Author : Anonim
Publisher : Unknown
Page : 220 pages
File Size : 54,5 Mb
Release : 1984
Category : Aeronautics
ISBN : STANFORD:36105024736451

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NASA Technical Memorandum by Anonim Pdf

Aerodynamics of Tandem Wing Aircraft

Illia Kryvokhatko
Aerodynamics of Tandem Wing Aircraft Book PDF

Author : Illia Kryvokhatko
Publisher : Springer Nature
Page : 183 pages
File Size : 54,9 Mb
Release : 2023-03-02
Category : Technology & Engineering
ISBN : 9783031237775

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Aerodynamics of Tandem Wing Aircraft by Illia Kryvokhatko Pdf

This book contains extensive data about tandem wing aircraft. It includes a review of modern flying vehicles with four fixed wings, a review of analytical, numerical and experimental methods; results of the studies about aerodynamics; dependencies between geometrical parameters and aerodynamic characteristics, practical recommendations in development and optimizing of tandem wing aircraft to provide high lift-to-drag ratio, stability, and controllability. This is an ideal book for graduate students, researchers, and engineers working in fields of aerodynamics and conceptual design of the aircraft especially UAVs, ground-effect vehicles, and convertiplanes.

Engineering Analysis of Flight Vehicles

Holt Ashley
Engineering Analysis of Flight Vehicles Book PDF

Author : Holt Ashley
Publisher : Courier Corporation
Page : 402 pages
File Size : 50,6 Mb
Release : 2013-05-27
Category : Technology & Engineering
ISBN : 9780486166537

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Engineering Analysis of Flight Vehicles by Holt Ashley Pdf

"Written by one of the leading aerospace educators of our time, each sentence is packed with information. An outstanding book." — Private Pilot "Illuminated throughout by new twists in explaining familiar concepts, helpful examples and intriguing ‘by-the-ways.’ A fine book." — Canadian Aeronautics and Space Journal This classic by a Stanford University educator and a pioneer of aerospace engineering introduces the complex process of designing atmospheric flight vehicles. An exploration of virtually every important subject in the fields of subsonic, transonic, supersonic, and hypersonic aerodynamics and dynamics, the text demonstrates how these topics interface and how they complement one another in atmospheric flight vehicle design. The mathematically rigorous treatment is geared toward graduate-level students, and it also serves as an excellent reference. Problems at the end of each chapter encourage further investigation of the text’s material, the study of fresh ideas, and the exploration of new areas.