Circular 205. Edition 1
Last modified:1/1/1998
Recommended Method for Computing Noise Contours around Airports
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CIRCULAR RECOMMENDED METHOD FOR COMPUTING NOISE CONTOURS AROUND AIRPORTS Approved by the Secretary General and published under his authority INTERNATIONAL CIVIL AVIATION ORGANIZATION MONTREAL CANADA
Published in separate English, French, Russian and Spanish editions by the Inrernational Civil Aviation Organization. All correspondence, except orders and subscriptions, should be addressed to the Secretary General. Orders for this publication should be sent to one of the following addresses, togttner with the appropriate remittance by bank draft or post office money order in U.S. dollars or the currency of the country in which the order is placed. Document Sales Unit International Civil Aviation Organization 1000 Sherbrooke Street West, Suite 400 Montreal, Quebec Canada H3A 2R2 Egypt. ICAO Representative, Middle East and Eastern African Office, 16 Hassan Sabri, Zamalek, Cairo. France. Representant de I'OACI, Bureau Europe, 3 bis, villa mile-Bergerat, 92522 Neuilly-sur-Seine Cedex. India. Oxford Book and Stationery Co., Scindia House, New Delhi or 17 Park Street, Calcutta. Japan. Japan Civil Aviation Promotion Foundation, 15-12, I-chome, Toranomon, Minato-Ku, Tokyo. Kenya. ICAO Representative, Eastern African Office, United Nations Accommodation, P.O. Box 46294 Nairobi. Mexico. Representante de la OACI, Oficina Norteamerica y Caribe, Apartado postal 5-377, C.P. 11590, Mexico 5, D.F. Peru. Representante de la OACI, Oficina Sudamerica, Apartado 4127, Lima 100. Senegal. Representant de I'OACI, Bureau Afrique, Boite postale 2356, Dakar. Spain. Pilot's, Suministros Aeronauticos, S.A., C/Ulises, 5-Oficina Num. 2, 28043 Madrid Thailand. ICAO Representative, Asia and Pacific Office, P.O. Box 614, Bangkok. United Kingdom. Civil Aviation Authority, Printing and Publications'Services, Greville House, 37 Gratton Road, Cheltenham, Glos., GL50 2BN. Do you receive the ICAO BULLETIN The ICAO Bulletin contains a concise account of the activities of the Organization as well as articles of interest to the aeronautical world. The Bulletin will also keep you up to date on the latest ICAO publications, their contents, amendments, supplements, corrigenda and prices. Available in three separate editions English, French and Spanish. Annual subscription U.S.20.00 surface mail U.S.25.00 air mail.
Foreword The material for this circular was developed by the Committee on Aviation Environmental Protection at its first meeting held in Montreal in June 1986. It is intended to assist States in the computation of noise contours around airports. The scope of this circular is explained in Chapter 2. The issuance of this circular was approved by the Council on I I March 1987. Comments on the contents of this circular, particularly with respect to its application and usefulness, would be appreciated from all States. These comments will be taken into account in the preparation of subsequent editions. Comments concerning this document should be addressed to The Secretary General International Civil Aviation Organization 1000 Sherbrooke Street West Suite 400 Montreal, Quebec CANADA H3A 2R2
Table of Contents ......................... Chapter I . Introduction I ............................... Chapter 2 . Scope 2 Chapter 3 . Explanation of terms and symbols ...... 3 ....................... 3.1 Definitions of terms 3 3.2 Symbol5 ................................. 3 Chapter 4 . Calculation of contours ............... 6 4.1 Summary and applicability of the method .... 6 4.2 Input information requirements ............. 6 4.3 Noise from individual aeroplane movement . . 7 Chapter 5 . Aeroplane noise and performance data .. 8 5.1 Noise-power-distance data .................. 8 5.2 Performance data ......................... 12 Chapter 6 . Calculation of noise from individual ........................... aeroplane movements 14 ........................... 6.1 Calculation grid 14 6.2 Modelling of lateral dispersion across nominal ground tracks ........................... 15 6.3 Determination of the shortest distance to the .............................. flight path 15 6.4 Interpolation of the noise-power-distance data 15 6.5 Correction to the sound exposure level for ......................... aeroplane speed 17 ........................ 6.6 Lateral attenuation 17 6.7 Noise during the take-off roll ............... 18 6.8 Correction to the sound exposure level at an observation point opposite a turn in the aeroplane flight track .................. Appendices A . Noise indices in use in ICAO Contracting States 20 B . Approximate methods for determining Effective Perceived Noise Level EPNL ............... 22 C'. Equations for performance calculations ......... 24 D . Graphic method for correcting the sound exposure level near turns in the flight track ... 26
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Annex 16. Vol 3. Edition 1. Environmental Protection. Volume III. Aeroplane CO2 EmissionsDoc 8168. Vol 3. Edition 1. Procedures for air navigation services. Aircraft Operations. Volume III. Aircraft Operating ProceduresDoc 9184. Part 2. Edition 4. Airport Planning Manual. Part 2. Land Use and Environmental ControlDoc 9829. Edition 2. Guidance on the Balanced Approach to Aircraft Noise ManagementDoc 9842. Programme Budget of the Organization 2005-2006-2007Doc 9886. Edition 1. Report of the Seventh Meeting of the Committee on Aviation Environmental Protection (CAEP)Doc 9892. Assembly 36th Session Montréal, 18 – 28 September 2007 Executive Committee. ReportDoc 9911. Edition 1. Recommended Method for Computing Noise Contours Around Airports.Doc 9911. Edition 2. Recommended Method for Computing Noise Contours Around Airports.Doc 9911. Edition 2. Recommended Method for Computing Noise Contours Around AirportsВСЕ ДОКУМЕНТЫALL DOCUMENTSICAO CIRCULASЦИРКУЛЯРЫCircular 205
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