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 1958 with total page 1076 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Response to Discrete and Continuous Gusts of an Airplane Having Wing bending Flexibility and a Correlation of Calculated and Flight Results written by Antonio Ferri and published by . This book was released on 1954 with total page 278 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Structural Flexibiligy on Aircraft Loading written by A. Codik and published by . This book was released on 1953 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Evaluation of Effects of Flexibility on Wing Strains in Rough Air for a Large Swept wing Airplane by Means of Experimentally Determined Frequency response Functions with an Assessment of Random process Techniques Employed written by Thomas L. Coleman and published by . This book was released on 1960 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: Power spectral methods of analysis are applied to flight test measurements of the strain responses of a large swept-wing bomber airplane in rough air in order to determine the effects of airplane structural dynamic on the strain responses. Power spectra and frequency-response functions of the strain responses are determined and compared with the estimated results for a quasi-static reference airplane condition. The results obtained indicate that the bending and shear strain responses are significantly amplified in rough air because of the effect of structural dynamics by an amount that varies from 10 to 20 percent at the root to about 100 percent at the midspan station. The amplifications appear to be larger for the high-altitude tests than for the low-altitude tests. The amplifications of strains appear to be predominantly associated with the excitation of the first wing-bending mode, although at the outboard stations and particularly for the shear strains significant effects also are introduced by high-frequency structural modes. The determination of airplane frequency-response functions for responses to atmospheric turbulence from measurements in continuous rough air involves a relatively new application of random-process techniques. The results obtained appear to be subject to errors from a wide number of sources which give rise to distortions and sampling errors. A general analysis of the reliability of such frequency-response function estimates is presented and methods of estimating the distortions and sampling errors are developed. These methods are applied to the data in order to establish the reliability of the present results. The results indicate that with due precaution reliable estimates of frequency-response functions can be obtained.
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 Technical Note written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1957 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Subject Index to Unclassified ASTIA Documents written by Defense Documentation Center (U.S.) and published by . This book was released on 1960 with total page 922 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 Index of NACA Technical Publications written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1959 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1958 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Introduction to the Theory of Aeroelasticity written by Y C Fung and published by Courier Dover Publications. This book was released on 2008-10-17 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Geared toward advanced undergraduates and graduate students, this outstanding text surveys aeroelastic problems, their historical background, basic physical concepts, and the principles of analysis.
Download or read book Annual Report 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 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 1958 with total page 1138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise Survey of a Full scale Supersonic Turbine driven Propeller Under Static Conditions written by Max C. Kurbjun and published by . This book was released on 1957 with total page 742 pages. Available in PDF, EPUB and Kindle. Book excerpt: Overall sound-pressure levels and frequency spectra of the noise emitted from a full-scale, 7.2-foot-diameter, 3, 500 rpm, three-blade, supersonic propeller mounted on a turbine-powered airplane have been obtained under static conditions at stations about the propeller at a 100-foot radius.
Download or read book Annual Report written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1953 with total page 534 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1982 with total page 122 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:
