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Author: F. Schultz-Grunow
Publisher:
Published: 1941
Total Pages: 516
ISBN-13:
DOWNLOAD EBOOKFrom measurements in the free boundary layer of a plate the laws governing the velocity distribution and a new resistance law are derived which, by increasing Reynolds number Re(sub x) afford lower resistance values than the logarithmic law. The transverse velocities, the shearing stress, and the mixing path profiles were also defined.
Author: United States. National Advisory Committee for Aeronautics
Publisher:
Published: 1947
Total Pages: 446
ISBN-13:
DOWNLOAD EBOOKAuthor: James C. Sivells
Publisher:
Published: 1959
Total Pages: 50
ISBN-13:
DOWNLOAD EBOOKA method is developed for calculating the growth of a turbulent boundary layer at hypersonic Mach numbers. Excellent agreement with experimental results from axisymmetric nozzles has been obtained by the application of this method. The method utilizes a modification of Stewartson's transformation to simplify the integration of the momentum equation. Heat transfer is taken into account by evaluating the gas properties at Eckert's reference temperature and by using a modification of Crocco's quadratic for the temperature distribution in the boundary layer. A new empirical relation is used for the incompressible friction coefficient which agrees with experimental data over a Reynold's number range from 10(superscript 5) to 10(superscript 9).
Author: United States. National Advisory Committee for Aeronautics
Publisher:
Published: 1958
Total Pages: 550
ISBN-13:
DOWNLOAD EBOOKAuthor: John R. Westfall
Publisher:
Published: 1957
Total Pages: 674
ISBN-13:
DOWNLOAD EBOOKThis paper briefly summarizes the more important statistical data obtained by the NACA on the subject of ground loads. The information presented relates primarily to landing-impact and taxiing loads; however, some limited data are also presented on one phase of ground-handling loads, namely, braking friction. A number of experimental and theoretical papers dealing with various aspects of the subject are listed in the bibliography.
Author: Elmer A. Horton
Publisher:
Published: 1950
Total Pages: 678
ISBN-13:
DOWNLOAD EBOOKAn investigation was made to determine the effects of boundary-layer control on the landing performance characteristics of a liaison type of airplane having a payload of 1500 pounds and a flight duration of 5 hours. The aspect ratio was varied from 5 to 15, the wing span from 30 to 100 feet, and the brake horsepower from 300 to 1200. The use of boundary-layer control caused reduction in total landing distance (25 to 40 percent), ground-run distance, gliding speed, and stalling speed whereas sinking speed was increased only slightly.
Author:
Publisher:
Published: 194?
Total Pages: 854
ISBN-13:
DOWNLOAD EBOOKReproductions of reports, some declassified, of research done at Langley Memorial Aeronautical Laboratory during World War II. The order of reports does not represent when they were chronologically issued. Reference to the original version of each report is included.
Author: Pijush K. Kundu
Publisher: Academic Press
Published: 2015-06-08
Total Pages: 1021
ISBN-13: 0124071511
DOWNLOAD EBOOKThe classic textbook on fluid mechanics is revised and updated by Dr. David Dowling to better illustrate this important subject for modern students. With topics and concepts presented in a clear and accessible way, Fluid Mechanics guides students from the fundamentals to the analysis and application of fluid mechanics, including compressible flow and such diverse applications as aerodynamics and geophysical fluid mechanics. Its broad and deep coverage is ideal for both a first or second course in fluid dynamics at the graduate or advanced undergraduate level, and is well-suited to the needs of modern scientists, engineers, mathematicians, and others seeking fluid mechanics knowledge. - Over 100 new examples designed to illustrate the application of the various concepts and equations featured in the text - A completely new chapter on computational fluid dynamics (CFD) authored by Prof. Gretar Tryggvason of the University of Notre Dame. This new CFD chapter includes sample MatlabTM codes and 20 exercises - New material on elementary kinetic theory, non-Newtonian constitutive relationships, internal and external rough-wall turbulent flows, Reynolds-stress closure models, acoustic source terms, and unsteady one-dimensional gas dynamics - Plus 110 new exercises and nearly 100 new figures
