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Validation Of Aircraft Noise Prediction Models At Low Levels Of Exposure
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721092222 Total Pages :102 pages Book Rating :4.0/5 (922 download)
Book Synopsis Validation of Aircraft Noise Prediction Models at Low Levels of Exposure by : National Aeronautics and Space Administration (NASA)
Download or read book Validation of Aircraft Noise Prediction Models at Low Levels of Exposure written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-13 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aircraft noise measurements were made at Denver International Airport for a period of four weeks. Detailed operational information was provided by airline operators which enabled noise levels to be predicted using the FAA's Integrated Noise Model. Several thrust prediction techniques were evaluated. Measured sound exposure levels for departure operations were found to be 4 to 10 dB higher than predicted, depending on the thrust prediction technique employed. Differences between measured and predicted levels are shown to be related to atmospheric conditions present at the aircraft altitude. Page, Juliet A. and Hobbs, Christopher M. and Plotkin, Kenneth J. and Stusnick, Eric and Shepherd, Kevin P. (Technical Monitor) Langley Research Center NAS1-20103; RTOP 538-03-15-01
Book Synopsis Validation of Aircraft Noise Prediction Models at Low Levels of Exposure by :
Download or read book Validation of Aircraft Noise Prediction Models at Low Levels of Exposure written by and published by . This book was released on 2000 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781723481673 Total Pages :122 pages Book Rating :4.4/5 (816 download)
Book Synopsis Validation of Aircraft Noise Models at Lower Levels of Exposure by : National Aeronautics and Space Administration (NASA)
Download or read book Validation of Aircraft Noise Models at Lower Levels of Exposure written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-23 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noise levels around airports and airbases in the United States arc computed via the FAA's Integrated Noise Model (INM) or the Air Force's NOISEMAP (NMAP) program. These models were originally developed for use in the vicinity of airports, at distances which encompass a day night average sound level in decibels (Ldn) of 65 dB or higher. There is increasing interest in aircraft noise at larger distances from the airport. including en-route noise. To evaluate the applicability of INM and NMAP at larger distances, a measurement program was conducted at a major air carrier airport with monitoring sites located in areas exposed to an Ldn of 55 dB and higher. Automated Radar Terminal System (ARTS) radar tracking data were obtained to provide actual flight parameters and positive identification of aircraft. Flight operations were grouped according to aircraft type. stage length, straight versus curved flight tracks, and arrival versus departure. Sound exposure levels (SEL) were computed at monitoring locations, using the INM, and compared with measured values. While individual overflight SEL data was characterized by a high variance, analysis performed on an energy-averaging basis indicates that INM and similar models can be applied to regions exposed to an Ldn of 55 dB with no loss of reliability. Page, Juliet A. and Plotkin, Kenneth J. and Carey, Jeffrey N. and Bradley, Kevin A. Langley Research Center AIRCRAFT NOISE; NOISE INTENSITY; NOISE REDUCTION; FLIGHT CHARACTERISTICS; RADAR TRACKING; POSITION (LOCATION); FLIGHT OPERATIONS; SOUND PROPAGATION; NOISE PREDICTION (AIRCRAFT); AEROACOUSTICS; AUTOMATED RADAR TERMINAL SYSTEM; RELIABILITY; AIRPORTS; APPLICATIONS PROGRAMS (COMPUTERS); EXPOSURE...
Book Synopsis Validation of Aircraft Noise Models at Lower Levels of Exposure by :
Download or read book Validation of Aircraft Noise Models at Lower Levels of Exposure written by and published by . This book was released on 1996 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Validation of Aircraft Noise Exposure Prediction Procedure by : Harry Seidman
Download or read book Validation of Aircraft Noise Exposure Prediction Procedure written by Harry Seidman and published by . This book was released on 1977 with total page 87 pages. Available in PDF, EPUB and Kindle. Book excerpt: The NOISEMAP predictive procedure is used to describe the noise environment around airbases and thereby aid airbase planners to prevent community encroachment limiting the effectiveness of the installation. This report delineates the results of measurements made over one to three week periods at four Air Force airbases to acquire the data needed to validate and/or modify the noise predictive algorithms in NOISEMAP for takeoff, landing, traffic pattern, and ground runup operations. In general, the algorithms currently used in NOISEMAP provided predictions that agreed well with measured data. It was found the obtaining accurate data on aircraft operational procedures (engine power settings, airspeeds, and flight paths) was essential.
Book Synopsis Validation of Aircraft Noise Prediction Program by :
Download or read book Validation of Aircraft Noise Prediction Program written by and published by . This book was released on 1979 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aircraft Noise by : Oleksandr Zaporozhets
Download or read book Aircraft Noise written by Oleksandr Zaporozhets and published by CRC Press. This book was released on 2011-05-13 with total page 435 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aircraft noise has adverse impacts on passengers, airport staff and people living near airports, it thus limits the capacity of regional and international airports throughout the world. Reducing perceived noise of aircraft involves reduction of noise at source, along the propagation path and at the receiver. Effective noise control demands highly skilled and knowledgeable engineers. This book is for them. It shows you how accurate and reliable information about aircraft noise levels can be gained by calculations using appropriate generation and propagation models, or by measurements with effective monitoring systems. It also explains how to allow for atmospheric conditions, natural and artificial topography as well as detailing necessary measurement techniques.
Book Synopsis Research Needs in Aircraft Noise Prediction by : John P. Raney
Download or read book Research Needs in Aircraft Noise Prediction written by John P. Raney and published by . This book was released on 1975 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aircraft Noise Prediction Program Validation by :
Download or read book Aircraft Noise Prediction Program Validation written by and published by . This book was released on 1980 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aircraft Noise Exposure by : H. W. Veerbeek
Download or read book Aircraft Noise Exposure written by H. W. Veerbeek and published by . This book was released on 1998 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Noise Prediction Technology for CTOL Aircraft by : John P. Raney
Download or read book Noise Prediction Technology for CTOL Aircraft written by John P. Raney and published by . This book was released on 1977 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Method to Calculate Behind Start of Takeoff Roll Noise Level Adjustments by : A-21 Aircraft Noise Measurement Aviation Emission Modeling
Download or read book Method to Calculate Behind Start of Takeoff Roll Noise Level Adjustments written by A-21 Aircraft Noise Measurement Aviation Emission Modeling and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document describes a method to calculate noise level adjustments at locations behind an airplane (described by an angular offset or directivity) at the start of takeoff roll (SOTR). This method is derived from empirical data from jet aircraft (circa 2004), most of which are configured with wing-mounted engines with high by-pass ratios (Lau, et al., 2012). Methods are also described which apply to modern turboprop aricraft.Calculations of other propagation-related adjustments required for aircraft noise prediction models are described in AIR1845A, ARP5534, ARP866A, and AIR5662. This AIR describes a method to calculate noise level adjustments at locations behind an airplane at the start of takeoff roll (SOTR) for the purposes of aircraft noise prediction modeling. This method replaces the methods found in paragraph 3.3.1 (Sound Exposure Level Behind the Start-of-Takeoff Roll) of AIR1845A "Procedure for the Calculation of Airplane Noise in the Vicinity of Airports". Specifically, the calculations presented in 3.1 and 3.2 of this document replace the calculations in Step 3 of paragraph 3.3.1 of AIR1845A. It adheres to the basic approach described in AIR1845A and is based on measurements from modern jet and turboprop aircraft (circa 2004). The behind start of takeoff roll noise directivity method found in AIR1845A is based on measurements of older-generation (circa 1980), low by-pass ratio aircraft, primarily configured with fuselage-mounted engines. The new method described herein for modeling the noise directivity behind start of takeoff roll is derived from empirical data from modern jet aircraft, most of which are configured with wing-mounted engines that tend to have higher by-pass ratios as well as operate at higher thrust levels. Additionally, this AIR version includes a separate directivity adjustment for propeller-driven aircraft. Comparison of directivity adjustments computed from the method described herein and the AIR1845A method are presented in Appendix A. AIR6297 has been reaffirmed to comply with the SAE Five-Year Review policy.
Book Synopsis Federal Aircraft Noise Research, Development and Demonstration Programs: FY73-FY75 by : Interagency Aircraft Noise Research Panel
Download or read book Federal Aircraft Noise Research, Development and Demonstration Programs: FY73-FY75 written by Interagency Aircraft Noise Research Panel and published by . This book was released on 1975 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Analytical Prediction of the Interior Noise for Cylindrical Models of Aircraft Fuselages for Prescribed Exterior Noise Fields. Phase 1: Development and Validation of Preliminary Analytical Models by :
Download or read book Analytical Prediction of the Interior Noise for Cylindrical Models of Aircraft Fuselages for Prescribed Exterior Noise Fields. Phase 1: Development and Validation of Preliminary Analytical Models written by and published by . This book was released on 1980 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NASA Langley Scientific and Technical Information Output 2000 by :
Download or read book NASA Langley Scientific and Technical Information Output 2000 written by and published by . This book was released on 2001 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Community Noise Exposure Resulting from Aircraft Operations by : Bolt, Beranek, and Newman, inc
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:
Book Synopsis Selected methods for quantification of community exposure to aircraft noise by : Philip M. Edge
Download or read book Selected methods for quantification of community exposure to aircraft noise written by Philip M. Edge and published by . This book was released on 1976 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
