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 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 Recommended Notice of Proposed Rulemaking on Noise Levels for Turbojet Powered Airplanes and Large Propeller Driven Airplanes written by United States. Environmental Protection Agency and published by . This book was released on 1976 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Measured Or Estimated uncertificated Airplane Noise Levels written by United States. Federal Aviation Administration and published by . This book was released on 1986 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise Survey of a 10 foot Four blade Turbine driven Propeller Under Static Condtions written by Max C. Kurbjun and published by . This book was released on 1955 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical calculations of the sound-pressure levels by the method of NACA TN 2968 predict accurately, for the 10-foot propeller investigated, the location of and the maximum levels to be expected for the overall noise and the first two propeller harmonics. The calculations do not predict accurately the location of the maximum sound-pressure levels ad the maximum calculated levels are 10 and 13 decibels lower than the msximm messured levels for the third and fourth harmonics, respectively.
Download or read book Federal Aircraft Noise Abatement Plan written by United States. Office of Noise Abatement and published by . This book was released on 1969 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise Levels and Data Correction Analysis for Seven General Aviation Propeller Aircraft written by David W. Ford and published by . This book was released on 1980 with total page 396 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 1958 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise Standards Small Propeller Aircraft written by and published by . This book was released on 1974 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book First Federal Aircraft Noise Abatement Plan FY 1969 70 written by United States. Office of Noise Abatement and published by . This book was released on 1970 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Third Federal Aircraft Noise Abatement Plan written by United States. Office of Noise Abatement and published by . This book was released on 1972 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Noise Considerations in the Design and Operation of V STOL Aircraft written by Domenic J. Maglieri and published by . This book was released on 1961 with total page 20 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 1954 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Propeller loudness Charts for Light Airplanes written by Harvey H. Hubbard and published by . This book was released on 1947 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Calculations of the rotational-noise and vortex noise loudness levels at distances of 300 and 1000 feet have been made for a large number of propellers in forward flight of 50 to 200 miles per hour and for engine ratings of 100 to 300 horsepower. Propellers of two, four, six, and eight blades, diameters of 6, 8, and 10 feet, and rotational speeds of 1000 to 2000 rpm are considered. Calculated results are presented in chart form for convenience of designers of propellers for applications in which loudness is an important consideration.
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 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 NASA Technical Note written by and published by . This book was released on 1961 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
