Download or read book Sound level Measurements of a Light Airplane Modified to Reduce Noise Reaching the Ground written by A. W. Vogeley and published by . This book was released on 1948 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: An army liaison-type airplane, representative of personal airplanes in the 150 to 200 horsepower class, has been modified to reduce propeller and engine noise according to known principles of airplane-noise reduction. Noise-level measurements demonstrate that, with reference to an observer on the ground, a noisy airplane of this class can be made quiet.

Download or read book Sound level Measurements of a Light Airplane Modiefied to Reduce Noise Reaching the Ground written by A. W. Vogeley and published by . This book was released on 1948 with total page 29 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 1948 with total page 410 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 1948 with total page 386 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 1949 with total page 12 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 1948 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Approach to the Problem of Estimating Severe and Repeated Gust Loads for Missile Operations written by Harry Press and published by . This book was released on 1958 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analysis of available airplane measurements of vertical gust velocity is presented in order to arrive at a simple description of the frequency and intensity of gust velocities experienced by airplanes in operations. For the purpose of application to missile operations; the results obtained are modified to eliminate the effects of storm-avoidance procedures normally followed in airplane operations. The frequency distributions of gust velocity are then converted to a form appropriate for use in power spectral response calculations. Methods of applying the results to the estimation of the large and the small repeated loads in missile operations are then developed. Simple methods of estimating the gust loadings that will be exceeded with a given probability are presented in terms of missile response parameters and turbulence parameters. The limitations of the present results are also discussed briefly.

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 1952 with total page 498 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 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 1950 with total page 988 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 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 One dimensional Calculation of Flow in a Rotating Passage with Ejection Through a Porous Wall written by Ernst Rudolf Georg Eckert and published by . This book was released on 1955 with total page 738 pages. Available in PDF, EPUB and Kindle. Book excerpt: In transpiration cooling of various structural elements in gas turbines, the coolant has to be ducted within passages to the porous walls through which it is ejected into the gas stream. The passages, often arranged in rotating parts, have to be designed in such a way as to ensure the proper local distribution of the coolant. In this report, a method is presented by which either the local permeability can be predicted. The method is based on a one-dimensional treatment of the gas flow through a rotating channel with varying cross section and partially porous walls. The inlet pressure into the channel and the outside pressure along it are assumed prescribed. It is also stipulated that the passage ends blindly. However, the method can easily be extended to cover the situation where a certain mass flow leaves the open end of the passage.

Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1971 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book List of NACA Reports 1947 1951 written by United States. National Advisory Committee for Aeronautics and published by . This book was released on 1953 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Direct reading Design Charts for 75S T Aluminum alloy Flat Compression Panels Having Longitudinal Straight web Y section Stiffeners written by Norris F. Dow and published by . This book was released on 1948 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct-reading design charts are presented for 75S-T aluminum-alloy flat compression panels having longitudinal straight-web Y-section stiffeners. These charts make possible the direct determination of the stress and all the panel proportions required to carry a given intensity of loading with a given skin thickness and effective length of panel.

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 Theoretical Analysis of Total pressure Loss and Airflow Distribution for Tubular Turbojet Combustors with Constant Annulus and Liner Cross sectional Areas written by A. J. Eggers and published by . This book was released on 1958 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: