Download or read book Air Traffic Noise Calculation written by Hugo Lyse Nielsen and published by Nordic Council of Ministers. This book was released on 1994 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: On cover: Environment: traffic.
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.
Download or read book PROCEDURE FOR THE CALCULATION OF AIRPLANE NOISE IN THE VICINITY OF AIRPORTS written by A-21 Aircraft Noise Measurement Aviation Emission Modeling and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Aviation Noise Impact Management written by Laurent Leylekian and published by Springer. This book was released on 2022-03-15 with total page 321 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book provides a view into the state-of-the-art research on aviation noise and related annoyance. The book will primarily focus on the achievements of the ANIMA project (Aviation Noise Impact Management through Novel Approaches), but not exclusively. The content has a broader theme in order to encompass. regulation issues, the ICAO (International Civil Aviation Organization) balanced approach, progresses made on technologies and reduction of noise at source, impact of possible future civil supersonic aircraft, land-use planning issues, as well as the core topics of the ANIMA project, i.e. impact on human beings, annoyance, quality of life, health and findings of the project in this respect. This book differs from traditional research programmes on aviation noise as the authors endeavour, not to lower noise at source, but to reduce the annoyance. This book examines these non-acoustic factors in an effort to help those most affected by aviation noise – communities living close to airports, and also help airport managers, policy-makers, local authorities and researchers to deal with this issue holistically. The book concludes with some recommendations for EU, national and local policy-makers, airport and aviation authorities, and more broadly a scientifically literate audience. These recommendations may help to identify gaps for progress in terms of research but also genuine implementation actions for political and regulatory authorities.
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.
Download or read book Method for Modeling Line of Sight Blockage of Aircraft Noise written by A-21 Aircraft Noise Measurement Aviation Emission Modeling and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document describes methods for calculating the attenuation of sound due to line-of-sight blockage or shielding from non-level terrain. This method applies to sound propagating from an airplane to locations on the ground during ground roll, climbout after liftoff, and landing operations.AIR1845 and AIR5662 provides guidance for modeling aircraft noise at airports with flat terrain. In reality, many airports are surrounded by non-level terrain that may result in attenuation (or shielding) of sound at some receptors. This noise blockage can be accounted for with the line-of-sight blockage calculation, based on the difference in propagation path length between the direct path and propagation path over the top of terrain feature. The purpose of this aircraft information report is to provide a method that accounts for the attenuation due to line-of-sight blockage of aircraft noise by terrain features. This Aerospace Information Report (AIR) describes a method to calculate noise level adjustments due to line-of-sight blockage (LOS) of the noise propagation between a source and receiver by terrain for the purposes of aircraft noise prediction modeling.AIR1845 provides guidance for modeling aircraft noise at airports with flat terrain. In reality, many airports are surrounded by non-level terrain that may result in noise blockage (or shielding) at some nearby receptors. This noise blockage can be accounted for with the line-of-sight blockage calculation, based on the difference in propagation path length between the direct path (straight line between source and receiver, terrain feature absent) and the propagation path over or around the terrain feature.
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 1984 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Procedure for the Calculation of Airplane Noise in the Vicinity of Airports written by Society of automotive engineers. Aircraft noise committee and published by . This book was released on 1986 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Recommended Method for Computing Noise Contours Around Airports written by International Civil Aviation Organization and published by . This book was released on 1988 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Airport Noise written by United States. General Accounting Office and published by . This book was released on 1988 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Method for Predicting Lateral Attenuation of Airplane Noise written by A-21 Aircraft Noise Measurement Aviation Emission Modeling and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document describes analytical methods for calculating the attenuation of the level of the sound propagating from an airplane to locations on the ground and to the side of the flight path of an airplane during ground roll, climbout after liftoff, and landing operations. Both level and non-level ground scenarios may be modeled using these methods, however application is only directly applicable to terrain without significant undulations, which may cause multiple reflections and/or multiple shielding effects. This attenuation is termed lateral attenuation and is in excess of the attenuation from wave divergence and atmospheric absorption.The methods for calculating the lateral attenuation of the sound apply to: turbofan-powered transport-category airplanes with engines mounted at the rear of the fuselage (on the sides of the fuselage or in the center of the fuselage as well as on the sides) or under the wings propeller-driven transport-category or general-aviation airplanes propagation over ground surfaces that may be considered to be "acoustically soft" such as lawn or field grass situations where the terrain to the sides of the flight paths is not necessarily flat with receiver locations that are elevated above or depressed below the corresponding point on the ground under a flight path flight paths that include turns such that the airplane is banked.The calculation methods do not apply for calculation of lateral attenuation for: propagation over ground surfaces that are considered to be "acoustically hard" such as frozen or compacted soil, ice, or water propagation over ground surfaces that contain many large structures, extensive forests, and similar objects propagation over ground surfaces with significant undulating terrain the sound produced by helicopters.Helicopters are highly directional sources. While the specific method described herein is not wholly applicable to the prediction of lateral attenuation of helicopter noise, some components (see 6.1) may be applicable.Relationships presented herein were derived utilizing data from microphones placed 1.2 m above the local ground surface. The relationships may be appropriate for use at receivers at other heights, however care should be taken in such applications. AIR5662 has been reaffirmed to comply with the SAE five-year review policy.
Download or read book Procedure for the Calculation of Airplane Noise in the Vicinity of Airports written by Society of Automotive Engineers and published by . This book was released on 1986 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Noise and Management written by Selma Kurra and published by John Wiley & Sons. This book was released on 2020-09-04 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Noise and Management Selma Kurra, Istanbul Technical University and dBKES Engineering Ltd, Turkey A comprehensive overview of environmental noise pollution from the standpoint of environmental impact and control Environmental noise is studied, regulated and monitored by many governments and institutions, as well as forming the basis for a number of different occupations due to the adverse effects of noise exposure. Environmental Noise and Management provides a comprehensive overview of environmental noise pollution. The book begins by covering the fundamentals of noise and acoustics, major noise sources and prediction and evaluation techniques. Developments in noise measuring techniques, and mapping and improvement of legislation to control noise pollution are then discussed, and international regulations are presented. Technological advances and recent developments regarding strategy and action plans are also covered in depth. Key features: Summarizes the relevant international standards covering noise pollution and environmental engineering practice. Presents technological advances and recent developments regarding strategy and action plans. Covers developments in noise measuring techniques, prediction models, mapping and improvement of legislation to control noise pollution. Environmental Noise and Management is a comprehensive resource for researchers and graduate students who are involved in noise pollution from the standpoint of environmental impact and control.
Download or read book Noise Mapping in the EU written by Gaetano Licitra and published by CRC Press. This book was released on 2012-09-06 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Noise mapping is the first tool to effectively assess noise exposure, communicating information to citizens, and defining effective action plans for protecting citizens from high noise levels and preserving quiet areas in urban European Community environments. Indeed, strategic noise maps are now required in the European Union for all population ce
Download or read book Green Accounting in Europe Four case studies written by Anil Markandya and published by Springer Science & Business Media. This book was released on 1999-01-31 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conventional economic accounts, which measure Gross National Product (GNP)and related indicators of national performance, do not fully allow for the damages caused to the environment in the course of producing and consuming goods and services. Nor do they fully account for the fact that some resources are being depleted in achieving the living standards that we enjoy today. This failure is important, because policy-makers are guided by the changes in macroeconomic indicators such as GNP. Moreover such indicators are not a good guide to the sustainability of present practices of consumption and production. This book provides practical estimates of one key area of neglect in the present national accounts - the measurement of environmental damages. The book sets out the methodology for making such estimates and then applies it to data from four countries: Germany, Italy, The Netherlands and the UK. The results show what can be achieved in the way of consistent damage estimates and what the key problems are.
Download or read book Handbook of Aircraft Noise Metrics written by Ricarda L. Bennett and published by . This book was released on 1981 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information is presented on 22 noise metrics that are associated with the measurement and prediction of the effects of aircraft noise. Some of the instantaneous frequency weighted sound level measures, such as A-weighted sound level, are used to provide multiple assessment of the aircraft noise level. Other multiple event metrics, such as day-night average sound level, were designed to relate sound levels measured over a period of time to subjective responses in an effort to determine compatible land uses and aid in community planning. The various measures are divided into: (1) instantaneous sound level metrics; (2) duration corrected single event metrics; (3) multiple event metrics; and (4) speech communication metrics. The scope of each measure is examined in terms of its: definition, purpose, background, relationship to other measures, calculation method, example, equipment, references, and standards.
Download or read book Technology to Reduce Aircraft Noise written by United States. Congress. House. Committee on Science. Subcommittee on Technology and published by . This book was released on 1998 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
