A Study Of The Flow About The Blunt Leading Edge Of Delta Wings At Zero Angle Of Attack At Hypersonic Speeds
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Author | : Clifford C. Horstman |
Publisher | : |
Total Pages | : |
Release | : 1963 |
Genre | : Aerodynamics, Hypersonic |
ISBN | : |
Download A Study of the Flow about the Blunt Leading Edge of Delta Wings at Zero Angle of Attack at Hypersonic Speeds Book in PDF, Epub and Kindle
Author | : Bernard Mazelsky |
Publisher | : |
Total Pages | : 82 |
Release | : 1967 |
Genre | : |
ISBN | : |
Download Research on Hypersonic Flow of Blunt Delta Wings. Part I. Theoretical and Experimental Study of a 70-degree Blunt Delta Wing for Low Angles of Attack at Supersonic and Hypersonic Speeds Book in PDF, Epub and Kindle
The object of the present analysis is to investigate the high-speed aerodynamic properties of a blunt delta wing at low angles of attack where the maximum lift to drag ratio occurs. Oguchi's solution of hypersonic flow over a blunt leading edge flat plate at zero incidence is extended to three dimensional delta wings at angle of attack. The shock wave shapes and pressure distributions were obtained by employing the oblique shock relations at the windward sides of the Prandtl-Meyer equations at the leeward side of the wing. The total lift and drag of the wing due to pressure and skin friction were computed by numerical integration using the IBM 7094 computer. The present calculated aerodynamic forces generally agree with the experimental data at the high supersonic Mach numbers (M approx.> or = 4) and lower thickness ratio of the wing which is a 70-degree swept slab sided delta wing with a cylindrical leading edge. (Author).
Author | : Peter T. Bernot |
Publisher | : |
Total Pages | : 48 |
Release | : 1963 |
Genre | : Mach number |
ISBN | : |
Download Pressure Distributions on Blunt-delta Wings at Angles of Attack Up to 90 Degrees and Mach Number of 6.85 Book in PDF, Epub and Kindle
Author | : Gerald L. Burke |
Publisher | : |
Total Pages | : 74 |
Release | : 1972 |
Genre | : |
ISBN | : |
Download A Study of the Blunt Slab Delta Wing at Hypersonic Speeds and Angles of Attack Book in PDF, Epub and Kindle
This report presents information obtained during an extensive AFFDL study of the flow field about blunt, slab delta wings. Data taken during the study include surface heat transfer and pressure, pitot surveys, oil flows, schlierens, shadowgraphs, and vapor screens. The main lesson of the study is the three-dimensionality of the flow field in addition to the documented effects of inflow and outflow. The most unexpected phenomenon was the appearance of a hot streak on the lower surface off the center line. It is proposed that this region of higher heating is due to a slip line originating at the point of inflection in the shock wave between the bow shock and the leading edge shock. This proposition is supported by pitot pressure surveys and surface pressure distributions. Other qualitative features of the flow field which are presented include the movement of the leading edge stagnation line onto the lower surface. The relative entropy levels of the flow field and the use of vapor screens in hypersonic tunnels are discussed. (Author).
Author | : United States. Wright Air Development Division |
Publisher | : |
Total Pages | : 1246 |
Release | : 1961 |
Genre | : Aeronautics |
ISBN | : |
Download WADC Technical Report Book in PDF, Epub and Kindle
Author | : Arnold Polak |
Publisher | : |
Total Pages | : 48 |
Release | : 1970 |
Genre | : Aerodynamics, Hypersonic |
ISBN | : |
Download On the Hypersonic Flow Past Blunted, Flat Delta Wings Book in PDF, Epub and Kindle
The flow of a perfect gas over the slab portion of a blunted delta wing flying at hypersonic speeds is studied. A set of approximate equations is derived and a solution - for an inviscid flow - is obtained. Using this solution as a representation for the inviscid flow problem, a formulation to the laminar boundary-layer equations is presented; one which is applicable to the flow field's azimuthal planes where the crossflow gradients are not too large. Numerical solutions to these boundary-layer equations have been obtained; however, these are restricted to the azimuthal planes and near to the leading edges. The results indicate the presence of a dividing surface streamline since a numerical solution could not be obtained near the centerplane of the wing, where the crossflow velocity is large. (Author).
Author | : |
Publisher | : |
Total Pages | : 702 |
Release | : 1995 |
Genre | : Aeronautics |
ISBN | : |
Download Scientific and Technical Aerospace Reports Book in PDF, Epub and Kindle
Author | : Dewey E. Wornom |
Publisher | : |
Total Pages | : 30 |
Release | : 1964 |
Genre | : Delta wing airplanes |
ISBN | : |
Download Comparison of Longitudinal Aerodynamic Characteristics of Curved and Straight Leading-edge Delta Wings at Mach Numbers 3 and 6 Book in PDF, Epub and Kindle
Author | : P. Calvin Stainback |
Publisher | : |
Total Pages | : 28 |
Release | : 1962 |
Genre | : Airplanes |
ISBN | : |
Download Pressure Measurements on Two 60° Swept Delta Wings with Blunt Leading Edges and Dihedral Angles of 0° and 45° at a Mach Number of 4.95 Book in PDF, Epub and Kindle
Author | : |
Publisher | : |
Total Pages | : 222 |
Release | : 1987 |
Genre | : |
ISBN | : |
Download Study of Lee-side Flows Over Conically Cambered Delta Wings at Supersonic Speeds, Part 1 Book in PDF, Epub and Kindle