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Modeling Of Longitudinal Unsteady Aerodynamics Of A Wingtail Combination
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Book Synopsis Modeling of longitudinal unsteady aerodynamics of a wingtail combination by :
Download or read book Modeling of longitudinal unsteady aerodynamics of a wingtail combination written by and published by DIANE Publishing. This book was released on with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781723743511 Total Pages :34 pages Book Rating :4.7/5 (435 download)
Book Synopsis Modeling of Longitudinal Unsteady Aerodynamics of a Wing-Tail Combination by : National Aeronautics and Space Adm Nasa
Download or read book Modeling of Longitudinal Unsteady Aerodynamics of a Wing-Tail Combination written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-16 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerodynamic equations for the longitudinal motion of an aircraft with a horizontal tail were developed. In this development emphasis was given on obtaining model structure suitable for model identification from experimental data. The resulting aerodynamic models included unsteady effects in the form of linear indicial functions. These functions represented responses in the lift on the wing and tail alone, and interference between those two lifting surfaces. The effect of the wing on the tail was formulated for two different expressions concerning the downwash angle at the tail. The first expression used the Cowley-Glauert approximation known-as "lag-in-downwash," the second took into account growth of the wing circulation and delay in the development of the lift on the tail. Both approaches were demonstrated in two examples using the geometry of a fighter aircraft and a large transport. It was shown that the differences in the two downwash formulations would increase for an aircraft with long tail arm performing low-speed, rapid maneuvers.Klein, VladislavLangley Research CenterUNSTEADY AERODYNAMICS; AERODYNAMIC CHARACTERISTICS; AERODYNAMIC STABILITY; LONGITUDINAL STABILITY; LIFT; PITCHING MOMENTS; WIND TUNNEL TESTS; BODY-WING AND TAIL CONFIGURATIONS; WINGS; TAIL ASSEMBLIES; DOWNWASH; FIGHTER AIRCRAFT
Book Synopsis Modeling of Longitudinal Unsteady Aerodynamics of a Wing-Tail Combination by : Vladislav Klein
Download or read book Modeling of Longitudinal Unsteady Aerodynamics of a Wing-Tail Combination written by Vladislav Klein and published by . This book was released on 1999 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NASA Langley Scientific and Technical Information Output: 1999 by :
Download or read book NASA Langley Scientific and Technical Information Output: 1999 written by and published by . This book was released on 2000 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index to NASA Technical Publications by : United States. National Aeronautics and Space Administration
Download or read book Index to NASA Technical Publications written by United States. National Aeronautics and Space Administration and published by . This book was released on 1960-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Index of NASA Technical Publications by : United States. National Aeronautics and Space Administration
Download or read book Index of NASA Technical Publications written by United States. National Aeronautics and Space Administration and published by . This book was released on 1960 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Selected Listing of NASA Scientific and Technical Reports for ... by :
Download or read book A Selected Listing of NASA Scientific and Technical Reports for ... written by and published by . This book was released on 1949 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Ravindra V. Jategaonkar Publisher :AIAA (American Institute of Aeronautics & Astronautics) ISBN 13 : Total Pages :568 pages Book Rating :4.3/5 (91 download)
Book Synopsis Flight Vehicle System Identification by : Ravindra V. Jategaonkar
Download or read book Flight Vehicle System Identification written by Ravindra V. Jategaonkar and published by AIAA (American Institute of Aeronautics & Astronautics). This book was released on 2006 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt: This valuable volume offers a systematic approach to flight vehicle system identification and exhaustively covers the time domain methodology. It addresses in detail the theoretical and practical aspects of various parameter estimation methods, including those in the stochastic framework and focusing on nonlinear models, cost functions, optimization methods, and residual analysis. A pragmatic and balanced account of pros and cons in each case is provided. The book also presents data gathering and model validation, and covers both large-scale systems and high-fidelity modeling. Real world problems dealing with a variety of flight vehicle applications are addressed and solutions are provided. Examples encompass such problems as estimation of aerodynamics, stability, and control derivatives from flight data, flight path reconstruction, nonlinearities in control surface effectiveness, stall hysteresis, unstable aircraft, and other critical considerations.
Book Synopsis Aviation Safety, Human Factors - System Engineering - Flight Operations - Economics - Strategies - Management by : Hans M. Soekkha
Download or read book Aviation Safety, Human Factors - System Engineering - Flight Operations - Economics - Strategies - Management written by Hans M. Soekkha and published by CRC Press. This book was released on 2020-03-26 with total page 827 pages. Available in PDF, EPUB and Kindle. Book excerpt: Questions concerning safety in aviation attract a great deal of attention, due to the growth in this industry and the number of fatal accidents in recent years. The aerospace industry has always been deeply concerned with the permanent prevention of accidents and the conscientious safeguarding of all imaginable critical factors surrounding the organization of processes in aeronautical technology. However, the developments in aircraft technology and control systems require further improvements to meet future safety demands. This book embodies the proceedings of the 1997 International Aviation Safety Conference, and contains 60 talks by internationally recognized experts on various aspects of aviation safety. Subjects covered include: Human interfaces and man-machine interactions; Flight safety engineering and operational control systems; Aircraft development and integrated safety designs; Safety strategies relating to risk insurance and economics; Corporate aspects and safety management factors --- including airlines services and airport security environment.
Book Synopsis Modeling of Aircraft Unsteady Aerodynamic Characteristics/Part 3 - Parameters Estimated from Flight Data by :
Download or read book Modeling of Aircraft Unsteady Aerodynamic Characteristics/Part 3 - Parameters Estimated from Flight Data written by and published by . This book was released on 1996 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1985 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Unsteady Aerodynamics of Airfoils and Characterization and Modeling of Axisymmetric Synthetic Jets by : Xi Xia
Download or read book Unsteady Aerodynamics of Airfoils and Characterization and Modeling of Axisymmetric Synthetic Jets written by Xi Xia and published by . This book was released on 2018-11-29 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This thesis has two main parts. The aerodynamic part is motivated by the interest in unveiling the flying secrets of natural fliers, e.g. birds and insects. The understandings will provide insights in the design and control of micro air vehicles (MAVs) for improved aerodynamic performance. The second part of the thesis focuses on the study of synthetic jets for aerodynamic flow control over MAVs. This is motivated by the promising effects of synthetic jets in enhancing mixing and controlling flow separation. The thesis starts with the unsteady aerodynamic modeling of a flat plate based on the Joukowski transformation and vortex method. The analytical solution includes both translational and rotational motions of the flat plate. The force calculation suggests that the lift generation caused by a stabilized leading edge vortex is a combined effect of the motions of both leading-edge and trailing-edge vortices. To extend this model to an arbitrarily-shaped airfoil, the wall boundary condition on the airfoil is enforced by introducing a bound vortex sheet at the location of the airfoil boundary. Furthermore, an analytical vortex-sheet formation condition is proposed to accurately evolve the wake vortices, and is based on the conservation laws of mass and momentum as well as Kelvin's circulation theorem. This condition resolves the paradox of the Giesing-Maskell model, which does not recover the steady-state Kutta condition. The thesis continues with an investigation of synthetic jets in a quiescent environment. An effective-eddy-viscosity concept is adopted to provide a unified modeling approach for the entrainment and mixing of any round jet, continuous or synthetic. The experimental study is focused on characterizing the spreading and decay features in the transitional region and far field of synthetic jets. The far-field momentum flux of a synthetic jet is modeled by calculating the hydrodynamic impulse of the vortical structure formed in the near field. Synthetic jets issuing into a crossflow are also studied and a self-similar model is developed for the trajectory and velocity of the midplane flow field. It is found that the crossflow velocity is enhanced in the near field due to the induced effect of the tilted vortex rings. This finding provides an auxiliary explanation for the mechanism of a synthetic jet in flow-separation control. Dissertation Discovery Company and University of Florida are dedicated to making scholarly works more discoverable and accessible throughout the world. This dissertation, "Unsteady Aerodynamics of Airfoils and Characterization and Modeling of Axisymmetric Synthetic Jets" by Xi Xia, was obtained from University of Florida and is being sold with permission from the author. A digital copy of this work may also be found in the university's institutional repository, IR@UF. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation.
Book Synopsis Dynamics of Atmospheric Flight by : Bernard Etkin
Download or read book Dynamics of Atmospheric Flight written by Bernard Etkin and published by Courier Corporation. This book was released on 2012-08-29 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: This treatment for upper-level undergraduates, graduate students, and professionals makes special reference to stability and control of airplanes, with extensive numerical examples covering a variety of vehicles. 260 illustrations. 1972 edition.
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1971 with total page 1388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications, Cumulative Index by : United States. Superintendent of Documents
Download or read book Monthly Catalog of United States Government Publications, Cumulative Index written by United States. Superintendent of Documents and published by . This book was released on 1976 with total page 1466 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA SP. written by and published by . This book was released on 1962 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Hereditary Models for Airfoils in Unsteady Aerodynamics by : J. A. Burns
Download or read book Hereditary Models for Airfoils in Unsteady Aerodynamics written by J. A. Burns and published by . This book was released on 1982 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report is concerned with the development of a general mathematical model for the motion of a two-dimensional airfoil in unsteady aerodynamics and with the study of numerical schemes for estimating parameters in this model. The equations of motion are a set of coupled ordinary and functional differential equations. Approximating Wagner functions are used to construct state space models that retain the hereditary nature of unsteady fluid flow. The results of some simple numerical experiments are presented including a preliminary analysis of wind-tunnel data. (Author).