Download or read book Boundary Layer Studies on a Spinning Cone written by Walter B. Sturek and published by . This book was released on 1973 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the effects of spin induced distortion of the boundary layer on a spinning 10 degree half angle cone at Mach 2, 3 and 4 is reported. The profile of the location of boundary layer transition has been determined completely about the surface of the cone model from spark shadowgraphs. These spark shadowgraphs were taken with the model mounted on an offset strut which was rolled incrementally in azimuth to reveal the entire surface of the model. The profile of the boundary layer thickness at the base of the cone has also been determined from the spark shadowgraphs. Strain gage balance measurements of Magnus and normal force were made for three significantly different boundary layer configurations and confirm the extreme sensitivity of Magnus to boundary layer configuration.

Download or read book Boundary Layer Studies on a Spinning Tangent oglive cylinder Model written by Walter B. Sturek and published by . This book was released on 1975 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the Magnus effect on a seven caliber tangent-ogive-cylinder model in supersonic flow is reported. The effects of surface spin, angle of attack and Mach number on boundary-layer transition have been studied using spark shadowgraphs of the flow. These shadowgraphs were taken while the model was mounted on offset struts to enable views to be obtained of the flow completely about the circumference of the model. The Magnus and normal forces were measured using the strain-gage balance technique for different boundary layer configurations. These measurements revealed a substantial sensitivity of Magnus force to the boundary layer configuration. A preliminary comparison of the Magnus measurements to the theory of Vaughn and Reis yielded poor agreement. The data have been tabulated to facilitate their use in the evaluation of proposed theoretical models of the Magnus effect.

Download or read book Boundary layer Studies on Spinning Bodies of Revolution written by Walter B. Sturek and published by . This book was released on 1974 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the effects of spin induced distortion of the boundary-layer on a spinning cone and tangent-ogive-cylinder model for small angle of attack at Mach 2, 3 and 4 is reported. The profile of the location of boundary-layer transition has been determined completely about the surface of the models from spark shadowgraphs. These spark shadowgraphs were taken with the model mounted on an offset strut which was rolled incrementally in azimuth to reveal the entire surface of the model. Strain gage balance measurements of Magnus and normal force were made for three significantly different boundary-layer configurations--predominately laminar, predominately turbulent, tripped to turbulent--and confirm the pronounced sensitivity of Magnus to boundary-layer configuration. (Author).

Download or read book Three Dimensional Flow Studies Over a Spinning Cone at Angle of Attack written by H. A. Dwyer and published by . This book was released on 1974 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calculation of the boundary layer induced Magnus force on a spinning cone is given. A new technique to calculate the laminar boundary layer flow over a spinning cone at small angles of attack has been developed, and has yielded the information needed to calculate the Magnus force. The results include both the centrifugal pressure gradient and crossflow wall shear contributions to the Magnus force, and also give the boundary layer displacement thicknesses. (Modified author abstract).

Download or read book Perspectives in Turbulence Studies written by Hans U. Meier and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volume entitled "Perspectives in Turbulence Stud ies" is dedicated to Dr. Ing. E. h. Julius C. Rotta in honour of his 75th birthday. J. C. Rotta, born on January 1, 1912, started his outstanding career in an unusual way, namely in a drawing office (1928 - 1931). At the same time he - as a purely self taught perso- took a correspondence course in airplane construction. From 1934 to 1945 he worked in the aircraft industry on different subjects in the fields of flight mechanics, structures, air craft design, and aerodynamics. In 1945 he moved to Gottingen and worked from that time at the Aerodynamische Versuchsanstalt (AVA, now DFVLR) and the Max-Planck-Institut fur Stromungsforschung (1947-1958), interrupted only by a stay in the U. S. at the Glenn L. Martin Company (1954 - 1955) and a visiting professorship at the Laval University in Quebec, Canada (1956). Already during his activities in industry, Dr. Rotta discovered his special liking for aerodynamics. In Gottingen, he was attracted by Ludwig Prandtl's discussions about problems associated with turbulence and in particular his new contribution to fully developed turbulence, published in 1945. At that time, W. Heisenberg and C. F. v. Weizacker pub lished their results on the energy spectra of isotropic turbu lence at large wave numbers. Since that time his main research interest in reasearch has been in turbulence problems.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1973 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book STAR written by and published by . This book was released on 1973 with total page 904 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Theory of Laminar Flows HSA 4 Volume 4 written by F. K. Moore and published by Princeton University Press. This book was released on 2015-12-08 with total page 892 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume IV of the High Speed Aerodynamics and Jet Propulsion series. Contents of this volume include: Introduction, by F.K. Moore; Laminar Flow Theory, by P.A. Lagerstrom; Three-Dimensional Laminar Boundary Layers, by A. Mager; Theory of Time-Dependent Laminar Flows, by Nicholas Rott; Hypersonic Boundary Layer Theory, by F.K. Moore; Laminar Flows with Body Forces, by Simon Ostrach; Stability of Laminar Flows, by S.F. Shen. Originally published in 1964. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.

Download or read book U S Government Research Reports written by and published by . This book was released on 1963 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements written by and published by . This book was released on 1974 with total page 1000 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1974 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Japanese Science and Technology 1983 1984 written by United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch and published by . This book was released on 1985 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Magnus Theory for Bodies of Revolution written by H. R. Vaughn and published by . This book was released on 1973 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis is presented for predicting Magnus force and moment coefficients for spinning ogive cylinder, cone cylinder, and conical bodies with laminar, transitional and turbulent boundary layers. The results compare favorably with experimental data.

Download or read book Magnus Characteristics of Arbitrary Rotating Bodies written by I. D. Jacobson and published by . This book was released on 1973 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report reviews both theoretical and experimental investigations of the Magnus effect on arbitrary bodies of revolution. The main emphasis is on spinning projectiles at angle of attack, both with and without fins. Flow visualization measurements are used to assess the accuracy of the existing theories. Laminar, turbulent, and mixed boundary layers are considered. (Author).

Download or read book Keywords Index to U S Government Technical Reports written by and published by . This book was released on 1962 with total page 1160 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Surveys of the Three Dimensional Boundary Layer on a Yawed Spinning Body of Revolution written by Walter B. Sturek and published by . This book was released on 1975 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Experimental measurements of the three dimensional boundary layer on a yawed, spinning tangent-ogive-cylinder model in supersonic flow are reported. The measurements were made using a flattened total head probe at one axial station near the base of the model for 10 azimuthal stations about the circumference. The test conditions were: M = 3, angle of attack = 4 deg, omega = 0 and 10,000 RPM. The trends observed in comparing measurements with and without the model spinning were: (1) the boundary layer is more thick and less full where surface spin opposes the crossflow velocity; and (2) the boundary layer is less thick and more full where surface spin is in the same direction as the crossflow velocity. (Author).

Download or read book Qualitative Simulator Study of Longitudinal Stick Forces and Displacements Desirable During Tracking written by Stanley Faber and published by . This book was released on 1958 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study in which an airplane simulator with one degree of freedom (pitch) was used, results were determined for three conditions of airplane dynamics. For an undamped natural frequency of 1/2 cps with a damping ratio of 0.18 and for an undamped natural frequency of 1 cps with a damping ratio of 0.11, moderate longitudinal stick forces and displacements were desired.