Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Unsteady Response Of The Leading Edge Vortices On A Pitching Delta Wing full books in PDF, epub, and Kindle. Read online Unsteady Response Of The Leading Edge Vortices On A Pitching Delta Wing ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Charles L. Magness
Publisher :
ISBN 13 :
Total Pages : 384 pages
Book Rating : 4.:/5 (251 download)
Download or read book Unsteady Response of the Leading-edge Vortices on a Pitching Delta Wing written by Charles L. Magness and published by . This book was released on 1991 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (227 download)
Download or read book Unsteady Structure of Leading-Edge Vortices on a Delta Wing written by and published by . This book was released on 1994 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The overall objective of this research program was to characterize the unsteady flow structure on wings having swept edges. Wings were subjected to global control, involving motion of the entire wing, and local control, involving perturbations at specified locations on the surface of the wing. New types of experimental facilities and image acquisition and processing techniques have allowed determination of the instantaneous vorticity distributions and streamline patterns of the flow. The occurrence of vortex breakdown and stall and their phase shifts relative to the wing motion and to control at the leading-edges have been interpreted in terms of new flow mechanisms. Delta Wings, Vortex Breakdown, Laser Diagnostics.
Author : C. Shih
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Unsteady Structure of Leading-edge Vortex Flow Over a Delta Wing written by C. Shih and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K. T. Lee
Publisher :
ISBN 13 :
Total Pages : 178 pages
Book Rating : 4.F/5 ( download)
Download or read book Controlled Vortical Flow on Delta Wings Through Unsteady Leading Edge Blowing written by K. T. Lee and published by . This book was released on 1990 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Aeronautics and Space Adm Nasa
Publisher :
ISBN 13 : 9781731351593
Total Pages : 162 pages
Book Rating : 4.3/5 (515 download)
Download or read book Controlled Vortical Flow on Delta Wings Through Unsteady Leading Edge Blowing written by National Aeronautics and Space Adm Nasa and published by . This book was released on 2018-11-18 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: The vortical flow over a delta wing contributes an important part of the lift - the so called nonlinear lift. Controlling this vortical flow with its favorable influence would enhance aircraft maneuverability at high angle of attack. Several previous studies have shown that control of the vortical flow field is possible through the use of blowing jets. The present experimental research studies vortical flow control by applying a new blowing scheme to the rounded leading edge of a delta wing; this blowing scheme is called Tangential Leading Edge Blowing (TLEB). Vortical flow response both to steady blowing and to unsteady blowing is investigated. It is found that TLEB can redevelop stable, strong vortices even in the post-stall angle of attack regime. Analysis of the steady data shows that the effect of leading edge blowing can be interpreted as an effective change in angle of attack. The examination of the fundamental time scales for vortical flow re-organization after the application of blowing for different initial states of the flow field is studied. Different time scales for flow re-organization are shown to depend upon the effective angle of attack. A faster response time can be achieved at angles of attack beyond stall by a suitable choice of the initial blowing momentum strength. Consequently, TLEB shows the potential of controlling the vortical flow over a wide range of angles of attack; i.e., in both for pre-stall and post-stall conditions. Lee, K. T. and Roberts, Leonard BLOWING; DELTA WINGS; FLOW DISTRIBUTION; LEADING EDGES; VORTICES; AIRCRAFT MANEUVERS; ANGLE OF ATTACK; MOMENTUM; NONLINEARITY; STABILITY...
Author :
Publisher :
ISBN 13 :
Total Pages : 88 pages
Book Rating : 4.:/5 (227 download)
Download or read book Unsteady Flow Structure from Swept Edges Subjected to Controlled Motion written by and published by . This book was released on 1990 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This program addresses the unsteady flow structure and loading of delta wings subjected to controlled pitching motion. Efforts are focussed on three primary areas: generation of computer-aided techniques for quantitative interpretation of flow structure; development of new types of experimental instrumental and facilities; and characterization of the unsteady flow structure on delta wings. Computer applications for quantitative visualization of the vortex structure involve tracking of hydrogen bubble timelines and particles illuminated by scanning lasers. These techniques are integrated with active control systems that generate prescribed pitching motion of delta wings. Characterization of the unsteady flow structure is concerned with the response of the vortex breakdown to the motion of the wing and with preliminary consideration of the instantaneous cross-sectional structure of the leading edge vortices. The phase lag of these features of the flow structure, relative to the wing motion, is a central consideration.
Author : Scott Andrew Thompson
Publisher :
ISBN 13 :
Total Pages : 452 pages
Book Rating : 4.:/5 (261 download)
Download or read book The Unsteady Aerodynamics of a Delta Wing Undergoing Large Amplitude Pitching Motions written by Scott Andrew Thompson and published by . This book was released on 1992 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Scott P. LeMay
Publisher :
ISBN 13 :
Total Pages : 318 pages
Book Rating : 4.:/5 (181 download)
Download or read book Leading Edge Vortex Dynamics on a Pitching Delta Wing written by Scott P. LeMay and published by . This book was released on 1987 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Margaret Anne Menzies
Publisher :
ISBN 13 :
Total Pages : 516 pages
Book Rating : 4.:/5 (366 download)
Download or read book Unsteady, Transonic Flow Around Delta Wings Undergoing Coupled and Natural Modes Response written by Margaret Anne Menzies and published by . This book was released on 1996 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Harry J. Kowal
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book An Investigation of Unsteady Vortex Flow for a Pitching-rolling 70-degree Delta Wing written by Harry J. Kowal and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 77 pages
Book Rating : 4.:/5 (227 download)
Download or read book Control of Lift and Drag in Unsteady Flows written by and published by . This book was released on 1992 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: The response of delta wings with different aspect ratios and a 2-D wing in unsteady free stream was investigated. It was found that the characteristics of the lift forces depend on the existence of leading-edge vortex shedding. For delta wings with attached leading-edge vortex, the time- averaged lift force was found to be independent of reduced frequency since there is no intrinsic vortex convection time scale. With increasing angle of attack or aspect ratio, vortex shedding can occur, and the time required to convect along the chord becomes an intrinsic time scale. The appearance of the intrinsic convection time scale on the delta wing corresponds to increased lift with increasing reduced frequency, just like the 2-D wing. Flow visualizations of vortex breakdown position around the trailing edge does not affect the lift force. For the 2-D wing, the aerodynamic performance in the poststall region shows a maximum at an optimum frequency. Very high lift coefficients exceeding 10 can be observed at this reduced frequency.
Author : Mohammad-Ameen M. Jarrah
Publisher :
ISBN 13 :
Total Pages : 352 pages
Book Rating : 4.F/5 ( download)
Download or read book Unsteady Aerodynamics of Delta Wings Performing Maneuvers to High Angle of Attack written by Mohammad-Ameen M. Jarrah and published by . This book was released on 1988 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J. M. Gray
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (11 download)
Download or read book Aeroelastic Response of a Flexible Delta Wing Due to Unsteady Vortex Flows written by J. M. Gray and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Raymond E. Gordnier
Publisher :
ISBN 13 :
Total Pages : 44 pages
Book Rating : 4.3/5 (91 download)
Download or read book Computation of a Kelvin-Helmholtz Instability for Delta Wing Vortex Flows written by Raymond E. Gordnier and published by . This book was released on 1991 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The structure of the shear layer which emanates from the leading edge of a 76 degrees sweep delta wing and forms the primary vortex is investigated numerically. The flow conditions are M at infinity = 0.2, Re = 50,000 and angle of attack of 20.5 degrees. Computational results are obtained using a Beam- Warning type algorithm. The existence of a Kelvin-Helmholtz type instability of the shear layer which emanates from the leading edge of the delta wing is demonstrated. A description is provided of the three-dimensional, unsteady behavior of the small-scale vortices associated with this instability. The numerical results are compared qualitatively with experimental flow visualizations exhibiting similar behavior.
Author :
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (742 download)
Download or read book Motion Effects on Leading-Edge Vortex Behavior Over Delta Wings and Generalized Modeling written by and published by . This book was released on 2003 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 974 pages
Book Rating : 4.F/5 ( download)
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 974 pages. Available in PDF, EPUB and Kindle. Book excerpt:
