Download or read book Directory and Trends of Noise Generated by a Propeller in a Wake written by P. J. W. Block and published by . This book was released on 1986 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Directivity and Trends of Noise Generated by a Propeller in a Wake written by P. J. W. Block and published by . This book was released on 1986 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Noise Generated by a Propeller in a Wake written by and published by . This book was released on 1984 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Noise Measured from a Propeller in a Wake written by P. J. W. Block and published by . This book was released on 1984 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1986 with total page 960 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book A Computational Study of the Noise Generated Due to Wake Interference with a Pusher Propeller written by Clay S. Mauk and published by . This book was released on 1992 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1985 with total page 2044 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Propeller noise Charts for Transport Airplanes written by Harvey H. Hubbard and published by . This book was released on 1953 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1990 with total page 1300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Annual Index written by and published by . This book was released on 1986 with total page 1132 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Experimental Study of the Noise Generated by a Pusher Propeller Due to a Wake Entering the Propeller Disc written by and published by . This book was released on 1979 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the noise generated by a pusher propeller due to a wake entering the propeller disc was conducted. Acoustic measurements were made in a low speed wind tunnel with the propeller operating in a uniform velocity airstream, and with a wind mounted at various locations upstream of the propeller. For the propeller alone case the experimental results were compared with theoretical results.

Download or read book Propeller noise Charts for Transport Airplanes written by Harvey H. Hubbard and published by . This book was released on 1953 with total page 47 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is emphasized that, if noise reductions are to be obtained or if present noise levels are to be maintained for higher power ratings, future propeller designs should operate at lower tip Mach numbers are currently being used. Single- rather than dual-rotating propellers were found to generate the lowest over-all noise levels for a given number of blades.

Download or read book Aeroacoustics of Flight Vehicles written by Harvey H. Hubbard and published by . This book was released on 1991 with total page 620 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Noise Generated by a Propeller in Non uniform Flow written by Bo Peng and published by . This book was released on 2019 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Added Noise Due to the Effect of an Upstream Wake on a Propeller written by M. A. Takallu and published by . This book was released on 1987 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Propeller and Wake Noise in Deep Sea Submersibles Part I Transmission of Sound Through a Wire Gauze in Steady Flow written by C. C. Carswell and published by . This book was released on 1968 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: The transmission of sound across a wire grid located cross-sectionally in a small tube carrying a low velocity flow is studied. A brief history of this and related problems is presented together with a technical justification for the present research. The physical arrangement of the wire grid and tube is presented and the assumptions necessary for writing linearized perturbation equations are discussed. The equations are given and a derivation of a subsequent equation involving the steady flow velocity, screen constant, acoustic frequency, and sound transmission coefficient is outlined. The interpretation of this equation in terms of the limiting case of no flow is discussed. Numerical solutions of the equation are presented and briefly interpreted in terms of air flow. An extension to the case of other flowing fluids is also outlined. Experimental results obtained to date are presented and some of the measurement problems are discussed. Plans for future analytical and experimental studies and possible applications for deep submersible vehicles are given. (Author).

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1986-12 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: