Download or read book Sensitivity of Noisemap Contours to Changes in Aircraft Operations written by David K. Holger and published by . This book was released on 1978 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sets of numerically generated noise exposure contours are available for the vicinity of most domestic Air Force bases and many civilian airports. For such bases, a simple method for manually predicting the change in area enclosed by a given noise exposure contour is described. Such predictions are used for determining whether or not a full scale computer rerun is necessary for a given set of operational changes. The method proposed involves first estimating the change in contour value for a given point and then using that change in contour value to estimate the change in area enclosed by a given contour. The results of several full scale computer runs using the USAF NOISEMAP computer program to test the proposed method are presented. (Author).

Download or read book Sensitivity Studies of Community Aircraft Noise Exposure NOISEMAP Prediction Procedure written by Dwight E. Bishop and published by . This book was released on 1976 with total page 123 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes a preliminary study of the sensitivity of noise exposure contours to various aircraft noise modeling parameters and assumptions. The study is the first step in a continuing technical assessment of the Air Force community-aircraft noise exposure (NOISEMAP) prediction procedure. The results indicate that the addition of a tone correction to the noise measure can result in appreciable increase in noise exposure areas, but the increase is highly dependent on the type of aircraft operations. Computation of contour areas for nine bases with and without the ground runup penalty showed how the percent of area impacted increased with increasing noise exposure level. Use of alternate algorithms for ground-to-ground propagation and transitions for air-to-ground and ground-to-ground situations is discussed.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Proceedings of the Iowa Academy of Science written by Iowa Academy of Science and published by . This book was released on 1978 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: List of members in each volume.

Download or read book Further Sensitivity Studies of Community Aircraft Noise Exposure NOISEMAP Prediction Procedures written by Dwight E. Bishop and published by . This book was released on 1977 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the results of studies of the sensitivity of the noise exposure contours to various model parameters and assumptions presently in the NOISEMAP procedure. The areas within Day/Night Level (LDN) contours for ten Air Force airbases increased by 11 to 40 percent when the noise measure was adjusted for the presence of pure tones. The contour areas for typical mixed fighter, bomber/tanker, and training airbases were reduced by 3 to 11 percent by substitution of the SAE algorithms for ground-to-ground propagation and transition models, whereas adding the fuselage shielding algorithm reduced the contour areas by 13 to 22 percent. Since there is little firm evidence showing one set of algorithms more accurate than the other, the present NOISEMAP models will be retained until further technical analyses or new data show a clear basis for alteration.

Download or read book SRIM Index written by and published by . This book was released on 1978 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Community Sensitivity to Changes in Aircraft Noise Exposure written by and published by . This book was released on 1981 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Community Sensitivity to Changes in Aircraft Noise Exposure written by and published by . This book was released on 1981 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Pollution Control written by and published by . This book was released on 1978 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Community Noise Exposure Resulting from Aircraft Operations written by Bolt, Beranek, and Newman, inc and published by . This book was released on 1974 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Community Noise Exposure Resulting from Aircraft Operations Appendix NOISEMAP Program Operator s Manual written by Nicolaas H. Reddingius and published by . This book was released on 1976 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report delineates the program operator changes consistent with the additional developments made on the computer program described in AMRL-TR-73-109 (AD-A004 821). The added capabilities and improved diagnostics that form NOISEMAP 3.2 are discussed. NOISEMAP 3.2 is used Air Force-wide to compute community noise exposure from aircraft flying and ground runup operations for preparing/assessing candidate Environmental Impact Statements and planning compatible land use in the vicinity of air installations. Improvements made to NOISEMAP include: (1) Optional outputs in terms of day-night average sound level, noise exposure forecast, and these measures with tone correction and ground runup penalty weightings; (2) Optional contour plotting on a line printer when sophisticated contour plotting software and hardware are not available; (3) Optional capability to perform the noise exposure computations over limited areas rather than the entire airbase vicinity; (4) Computation of the area contained within specified noise exposure contours; (5) Variable grid spacing of the computations to provide sufficient data points in high gradient noise exposure regions; and (6) Plotting of the aircraft altitude profiles to aid in checking the input operational data.

Download or read book Developing Noise Exposure Contours for General Aviation Airports written by Dwight E. Bishop and published by . This book was released on 1975 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aircraft Noise Impact written by R. Dale Beland and published by . This book was released on 1972 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book West Coast Basing of the MV 22 written by and published by . This book was released on 2009 with total page 494 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Directory of Computer Software Applications Environmental Pollution Control 1977 1980 written by United States. National Technical Information Service and published by . This book was released on 1980 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Sensitivity of Noise in the Community to Changes Aircraft Design Parameters and Operating Practices written by Darren P. Rhodes and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analysis of Noise from Aircraft Operations USNAS Miramar California written by and published by . This book was released on 1963 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt: