Download or read book Determination of Desirable Lengths of Z and Channel section Columns for Local instability Tests written by George J. Heimerl and published by . This book was released on 1944 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: Local-instability tests of 24S-T aluminum-alloy formed Z- and channel-section columns were made in order to determine a length of test specimen that would avoid the increased strength associated with short lengths and also permit the occurrence of a convenient buckling pattern. The effect of column length on the critical compressive stress, on the average stress at maximum load, and on the number of half-waves of the buckling pattern is shown. A buckling pattern of three half-waves is indicated as desirable for test purposes. A curve is presented from which may be determined the lengths of Z- or channel-section columns that give a buckling pattern of three half-waves. When the strength for local instability is very high, a reduction in the length indicated by the curve may be necessary to prevent column failure. In order to avoid the increased strength associated with short lengths, a ratio of length to web width above 3.5 should be used.

Download or read book Wartime Report written by and published by . This book was released on 194? with total page 844 pages. Available in PDF, EPUB and Kindle. Book excerpt: Reproductions 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.

Download or read book Experimental Investigation of Velocity Distributions Downstream of Single Duct Bends written by John R. Weske and published by . This book was released on 1948 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results indicate that cross-sectional shape and aspect ratio are minor factors compared with radius ratio in affecting the velocity pattern. Variation of Reynolds number within the range of the tests had no appreciable effect on the velocity distribution in curved ducts.

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 1956 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wartime Report Release List written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1947 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wartime Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NACA Wartime Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on with total page 692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 1949 with total page 616 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wartime Report written by and published by . This book was released on with total page 316 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 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Buckling Experiments Experimental Methods in Buckling of Thin Walled Structures Volume 2 written by Josef Singer and published by John Wiley & Sons. This book was released on 2002-08-12 with total page 1140 pages. Available in PDF, EPUB and Kindle. Book excerpt: * Edited by Josef Singer, the world's foremost authority on structural buckling. * Time-saving and cost-effective design data for all structural, mechanical, and aerospace engineering researchers.

Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1949 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analytical Method of Determining Transmission of Particles and Radiation Through Great Thickness of Matter written by A. R. Bobrowsky and published by . This book was released on 1948 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt: A matrixc method of determining transmission, scattering, and absorption of radition, such as gamma rays and neutrons, is presented in this report.

Download or read book Column and Plate Compressive Strengths of Aircraft Structural Materials written by George J. Heimerl and published by . This book was released on 1945 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: Column and plate compressive strengths of extruded 75S-T aluminum-alloy sheet were determined both within and beyond the elastic range from tests of thin-strip columns and from local-instability tests of H-, Z- and channel-section columns. These tests are part of an extensive research investigation to provide data on the structural strength of various aircraft materials. The results, which are presented in the form of curves and charts that are suitable for use in the design and analysis of aircraft structures, supersede preliminary results published previously.

Download or read book Column and Plate Compressive Strengths of Aircraft Structural Materials 24S T Aluminum alloy Sheet written by and published by . This book was released on 1945 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: Column and plate compressive strengths of 24S-T aluminum-alloy sheet were determined both within and beyond the elastic range from tests of thin-strip columns and from local-instability tests of formed Z- and channel-section columns. These tests are the first of a series in an extensive research investigation to provide data on the structural strength of various aircraft materials. The results, which are presented in the form of curves and charts that may be used in the design and analysis of aircraft structures, supersede preliminary results published previously.

Download or read book Bibliography of Scientific and Industrial Reports written by and published by . This book was released on 1949 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Airspeed Altitude and Acceleration Data Obtained from a Twin engine Transport Airplane Operated Over a Feeder line Route in the Rocky Mountains written by Martin R. Copp and published by . This book was released on 1956 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time-history data of airspeed, altitude, and acceleration obtained with the NACA VGH recorder from a twin-engine airplane operated by a regional feeder airline in the Rocky Mountains are evaluated to determine the magnitude and frequency of occurrence of gusts and gust accelerations and the operating airspeeds and altitudes. The results obtained are compared with the results previously obtained from a representative short-haul and long-haul operation.