Download or read book Studies of the Use of Freon 12 as a Wind tunnel Testing Medium written by Albert E. Von Doenhoff and published by . This book was released on 1953 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: A number of studies relating to the use of Freon-12 as a substitute medium for air in aerodynamic testing have been made. The use of Freon-12 instead of air makes possible large savings in wind-tunnel drive power. Because of the fact that the ratio of specific heats is approximately 1.13 for Freon-12 as compared with 1.4 for air, some differences exist between data obtained in Freon-12 and air. Methods for predicting aerodynamic characteristics of bodies in air from data obtained in Freon-12, however, have been developed from the concept of similarity of the streamline pattern. These methods, derived from consideration of two-dimensional flows, provide substantial agreement in all cases for which comparative data are available. These data consist of measurements throughout a range of Mach number from approximately 0.4 to 1.2 of pressure distributions and hinge moments on swept and unswept wings having aspect ratios ranging from 4.0 to 9.0, including cases where a substantial part of the wing was stalled.

Download or read book Studies of the Use of Freon 12 as a Testing Medium in the Langley Low turbulence Pressure Tunnel written by Albert E. Von Doenhoff and published by . This book was released on 1951 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 1953 with total page 1082 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 1953 with total page 1308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Research Abstracts written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1951 with total page 568 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Note written by and published by . This book was released on 1954 with total page 402 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 1953-07 with total page 818 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wind tunnel Studies of the Performance of Multirotor Configurations written by Richard C. Dingeldein and published by . This book was released on 1954 with total page 650 pages. Available in PDF, EPUB and Kindle. Book excerpt: The power requirements measured in static thrust and in level forward flight are presented for two helicopter rotor configurations. One is a coaxial rotor arrangement having the rotors spaced approximately 19 percent of the rotor radius; the other is a tandem configuration in which the rotor-shaft spacing is 3 percent greater than the rotor daimater and in which the rotors lie in the same plane. The experimental meausrements are compared with the results of calculations based on existing NACA single-rotor theory.

Download or read book TID written by and published by . This book was released on 1957 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Report of the National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1945 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes the Committee's Technical reports no. 1-1058, reprinted in v. 1-37.

Download or read book Report written by and published by . This book was released on 1955 with total page 962 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Transfer written by James M. Jacobs and published by . This book was released on 1957 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Report National Advisory Committee for Aeronautics written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1946 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Study of the Use of Freon 12 as a Wind tunnel Testing Medium at Low Supersonic Mach Numbers written by Milton A. Schwartzberg and published by . This book was released on 1952 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Memorandum written by United States. National Aeronautics and Space Administration and published by . This book was released on 1959 with total page 590 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Memorandum written by United States. National Aeronautics and Space Administration and published by . This book was released on 1959 with total page 918 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Model Research written by Alex Roland and published by . This book was released on 1985 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: