Getting to Grips with Aircraft Noise

Flight Operations Support & Line Assistance
Getting to grips with aircraft noise
TABLE OF CONTENTS
TABLE OF CONTENTS
1. INTRODUCTION......................................................................................................4
1.1. Brochure organization .................................................................................................................. 4
1.2. Background.................................................................................................................................... 4
1.3. About the International Civil Aviation Organization (ICAO)...................................................... 5
2. AIRPLANE NOISE SOURCES ................................................................................6
2.1. Engine noise .................................................................................................................................. 6
2.1.1. Jet noise................................................................................................................................... 6
2.1.2. Fan noise ................................................................................................................................. 7
2.1.3. Compressor noise.................................................................................................................... 7
2.2. Airframe noise ............................................................................................................................... 7
2.3. Example of share between engine and aerodynamic noise ..................................................... 7
3. JET-PLANES NOISE CERTIFICATION ..................................................................8
3.1. ICAO Annex 16 Volume 1 Chapter 2............................................................................................ 9
3.1.1. Noise evaluation measure ....................................................................................................... 9
3.1.2. Noise measurement points ...................................................................................................... 9
3.1.3. Maximum noise levels............................................................................................................ 11
3.2. ICAO Annex 16 Volume 1 Chapter 3.......................................................................................... 12
3.2.1. Noise evaluation measure ..................................................................................................... 12
3.2.2. Noise measurement points .................................................................................................... 12
3.2.3. Maximum noise levels............................................................................................................ 14
3.3. ICAO Annex 16 Volume 1 Chapter 4.......................................................................................... 18
3.3.1. Noise evaluation measure ..................................................................................................... 18
3.3.2. Noise measurement points .................................................................................................... 18
3.3.3. Maximum noise levels............................................................................................................ 18
3.3.4. Trade-offs............................................................................................................................... 18
3.3.5. CHAPTER 4 versus CHAPTER 3 limits................................................................................. 19
4. AIRCRAFT NOISE MANAGEMENT AROUND AIRPORTS..................................20
4.1. The balanced approach .............................................................................................................. 20
4.2. Noise zoning plans...................................................................................................................... 20
4.3. Potential impacts on operations................................................................................................ 22
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