Reynolds Number Influences in Aeronautics
Title | Reynolds Number Influences in Aeronautics PDF eBook |
Author | |
Publisher | |
Pages | 178 |
Release | 1993 |
Genre | |
ISBN |
A Survey of Reynolds Number and Wing Geometry Effects on Lift Characteristics in the Low Speed Stall Region
Title | A Survey of Reynolds Number and Wing Geometry Effects on Lift Characteristics in the Low Speed Stall Region PDF eBook |
Author | National Aeronautics and Space Administration (NASA) |
Publisher | Createspace Independent Publishing Platform |
Pages | 98 |
Release | 2018-07-02 |
Genre | |
ISBN | 9781722149918 |
This paper presents a survey of the effects of Reynolds number on the low- speed lift characteristics of wings encountering separated flows at their leading and side edges, with emphasis on the region near the stall. The influence of leading-edge profile and Reynolds number on the stall characteristics of two- dimensional airfoils are reviewed first to provide a basis for evaluating three- dimensional effects associated with various wing planforms. This is followed by examples of the effects of Reynolds number and geometry on the lift characteristics near the stall for a series of three-dimensional wings typical of those suitable for high-speed aircraft and missiles. Included are examples of the effects of wing geometry on the onset and spanwise progression of turbulent reseparation near the leading edge and illustrations of the degree to which simplified theoretical approaches can be useful in defining the influence of the various geometric parameters. Also illustrated is the manner in which the Reynolds number and wing geometry parameters influence whether the turbulent reseparation near the leading edge results in a sudden loss of lift, as in the two-dimensional case, or the formation of a leading-edge vortex with Rs increase in lift followed by a gentle stall as in the highly swept wing case. Particular emphasis is placed on the strong influence of 'induced camber' on the development of turbulent reseparation. R is believed that the examples selected for this report may be useful in evaluating viscous flow solutions by the new computational methods based on the Navier-Stokes equations as well as defining fruitful research areas for the high-Reynolds-number wind tunnels. Polhamus, Edward C. Langley Research Center...
Aerodynamics of the Model Airplane: Airfoil measurements
Title | Aerodynamics of the Model Airplane: Airfoil measurements PDF eBook |
Author | Franz Wilhelm Schmitz |
Publisher | |
Pages | 218 |
Release | 1967 |
Genre | Aerodynamics |
ISBN |
Reynolds Number Effects on the Induced Pressures of Cylindrical Bodies with Different Nose Shapes and Nose Drag Coefficients in Helium at a Mach Number of 24
Title | Reynolds Number Effects on the Induced Pressures of Cylindrical Bodies with Different Nose Shapes and Nose Drag Coefficients in Helium at a Mach Number of 24 PDF eBook |
Author | Richard D. Wagner (Jr.) |
Publisher | |
Pages | 52 |
Release | 1963 |
Genre | Aerodynamics |
ISBN |
Exact inviscid pressure distributions and shock shapes, obtained by the method of characteristics, are compared with experimental data. The results indicate a strong dependence of induced pressures upon Reynolds number, especially in the region immediately downstream of the nose-cylinder junction. The measured shock shapes revealed no discernible effect of Reynolds number variations.
Scientific and Technical Aerospace Reports
Title | Scientific and Technical Aerospace Reports PDF eBook |
Author | |
Publisher | |
Pages | 384 |
Release | 1993 |
Genre | Aeronautics |
ISBN |
Summary of Low Speed Airfoil Data
Title | Summary of Low Speed Airfoil Data PDF eBook |
Author | Michael S. Selig |
Publisher | Soartech |
Pages | 320 |
Release | 1995 |
Genre | Technology & Engineering |
ISBN |
Low Reynolds Number Aerodynamics
Title | Low Reynolds Number Aerodynamics PDF eBook |
Author | Thomas J. Mueller |
Publisher | Springer Science & Business Media |
Pages | 456 |
Release | 2013-03-08 |
Genre | Science |
ISBN | 3642840108 |
Current interest in a variety of low Reynolds number applications has focused attention on the design and evaluation of efficient airfoil sections at chord Reynolds numbers from about 100,000 to about 1,000,000. These applications include remotely piloted vehicles (RPVs) at high altitudes, sailplanes, ultra-light man-carrying/man powered aircraft, mini-RPVs at low altitudes and wind turbines/propellers. The purpose of this conference was to bring together those researchers who have been active in areas closely related to this subject. All of the papers presented are research type papers. Main topics are: Airfoil Design and Analysis, Computational Studies, Stability and Transition, Laminar Separation Bubble, Steady and Unsteady Wind Tunnel Experiments and Flight Experiments.