Download or read book Method for Calculation of Heat Transfer in Laminar Region of Air Flowing Around Cylinders of Arbitrary Cross Section including Large Temperature Differences and Transpiration Cooling written by Ernst Rudolf Georg Eckert and published by . This book was released on 1952 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method which permits approximation of local heat-transfer coefficients in the laminar-flow region around cylinders of arbitrary cross seciton from those wedge-type profiles is extended to include the effects of large temperature differences and transpiration cooling. Charts prepared from exact solutions of the laminar boundary-layer equations for wedge-type profiles which allow for these effects yield results with a minimum of calculation. Application of the method to circular and elliptic transpiration-cooled cylinders is made to determine local heat transfer coefficients and surface temperatures and to determine the variation in coolant flow required for maintaining a constant surface temperature.

Download or read book Method for Calculation of Laminar Heat Transfer in Air Flow Around Cylinders of Arbitrary Cross Section including Large Temperature Differences and Transpiration Cooling written by Dwight G. Moore and published by . This book was released on 1953 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Method for Calculation of Laminar Heat Transfer in Air Flow Around Cylinders of Arbitrary Cross Section including Large Temperature Differences and Transpiration Cooling written by E. R. G. Eckert and published by . This book was released on 1952 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Method for Calculation of Laminar Heat Transfer in Air Flaow Around Cylinders of Arbitrary Cross Section including Large Temperature Differences and Transpiration Cooling written by E.R.G. Eckert and published by . This book was released on 1953 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Transient Behavior of Shock Waves in Transonic Channel Flows written by Robert V. Hess and published by . This book was released on 1952 with total page 734 pages. Available in PDF, EPUB and Kindle. Book excerpt: The accuracy of the result obtained in a fundamental paper by Kantrowitz (NACA TN 1225) that a small short-time lowering of the back pressure in steady, shock-free, transonic diffuser flow causes a stationary or trapped shock to form near the critical sonic channel throat is investigated by considering the contribution of a higher-order term in the short-time calculations which was neglected in Kantrowitz's paper. In this higher approximation to the short-time effects, the shock is no longer stationary or trapped unless it is supported by a negative steady-flow back pressure; the result thus is no long in disagreement with steady-flow solutions for stationary shocks.

Download or read book Technical Note National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1955 with total page 1276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Corrosion of Metals of Construction by Alternate Exposure to Liquid and Gaseous Fluorine written by Richard M. Gundzik and published by . This book was released on 1954 with total page 678 pages. Available in PDF, EPUB and Kindle. Book excerpt: The corrosion of 3S-0 and 52S-0 aluminum, AISI 347, and 321 stainless steels, "A" nickel, and low-leaded brass has been determined from the weight change of specimens exposed alternately to liquid and gaseous fluorine. Experiments were continued for a total exposure time up to 3 1/2 months. It was found that corrosion is negligible under the conditions of the experiments. No visual differences were observed between those surfaces exposed to the gaseous phase only and those exposed to both the liquid and the gaseous phases.

Download or read book WADC Technical Report written by United States. Wright Air Development Division and published by . This book was released on 1955 with total page 1286 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Behavior of Materials Under Conditions of Thermal Stress written by S. S. Manson and published by . This book was released on 1953 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: A review is presented of available information on the behavior of brittle and ductile materials under conditions of thermal stress and thermal shock. For brittle materials, a simple formula relating physical properties to thermal-shock resistance are derived and used to determine the relative significance of two indices currently in use for rating materials. The importance of simulating operating conditions in thermal-shock testing is deduced from the formula and is experimentally illustrated by showing that BeO could be both inferior or superior to Al2O3 in thermal shock depending on the testing conditions. For ductile materials, thermal-shock resistance depends upon the complex interrelation among several metallurgical variables which seriously affect strength and ductility. These variables are briefly discussed and illustrated from literature sources. The importance of simulating operating conditions in tests for rating ductile materials is especially to be emphasized because of the importance of testing conditions in metallurgy. A number of practical methods that have been used to minimize the deleterious effects of thermal stress and thermal shock are outlined.

Download or read book Index of NACA Technical Publications written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1953 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Selected Listing of NASA Scientific and Technical Reports for written by and published by . This book was released on 1949 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Note written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1952 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of Technical Notes 1947 1953 written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1954 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1952 with total page 1182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by United States. Superintendent of Documents and published by . This book was released on 1952 with total page 1360 pages. Available in PDF, EPUB and Kindle. Book excerpt: February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index.

Download or read book Bibliography of Technical Reports written by and published by . This book was released on 1952 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Statistical Nature of Fatigue Properties written by E. Epremian and published by . This book was released on 1952 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt: Extensive fatigue tests were made on annealed Armco iron and plain carbon and alloy steels heat-treated to different strengths and microstructures. Statistics of fatigue-fracture curves and endurance limits were determined from the experimental data obtained and, for various other materials, from a survey of literature. The results were analyzed to show the relative effects of various metallurgical factors on the statistical nature of fatigue properties. Other phases of the problem studied include: dependence of statistical variation in fatigue life on stress level in the fracture range, statistics for location of crack initiation, size effect, understressing effect, and the form and method of plotting the S-N diagram.