Noise Certification Workshop Session 5: ICAO/CAEP Current Activities on Noise Certification

Current activities and new challenges Jan Boettcher EASA – European Aviation Safety Agency Cologne, Germany Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Structure Structure Leading Leading to to the the 7th 7th Meeting Meeting of of the the ICAO ICAO Committee Committee on on Aviation Aviation Environmental Environmental Protection Protection (CAEP/7) (CAEP/7) CAEP Science Focal Points F. Coulouvrat - V. Sparrow - R.C. Miake Lye

CAEP Secretariat J. Hupe Forecasting and Economic Analysis Support Group

N. Pulles (NL) – R. Roy (CA)

WG1: Noise-Technical Issues W. Franken (EC) – J. Skalecky (US)

WG2: Operations A. Simpson (CA) - R. Gardner (UK)

WG3: Emissions-Technical Issues D. Lister (UK) - C. Holsclaw (US)

Emissions Trading Task Force A. Hardeman (IATA) - K. Keldusild (SW)

Emissions Charges Task Force A. Muckle (US)

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Role Role of of CAEP CAEP Working Working Group Group 11 “The main aim of the Working Group 1 (WG1) under the Committee on Aviation Environmental Protection (CAEP) is to keep the ICAO noise certification standards up-to-date and effective, whilst ensuring that certification procedures are as simple and inexpensive as is practical.”

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Current Current WG1 WG1 Composition Composition Observers

Members Direction Générale de l’Aviation Civile (DGAC) France European Aviation Safety Agency (EASA) Japan Civil Aviation Bureau (JCAB) Transport Canada U.K. Civil Aviation Authority (CAA) U.S. Federal Aviation Administration (FAA)

Airport Council International (ACI) International Airport Transport Association (IATA) International Coordinating Council of Aerospace Industries Associations (ICCAIA) International Federation of Airline Pilots Associations (IFALPA)

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

WG1 WG1 Structure Structure Leading Leading to to CAEP/7 CAEP/7 WG1: Noise Technical Issues W. Franken (EC) – J. Skalecky (US) Technical Issues (TITG) – M. Marsan (US)

Future Noise Certification (FTG) – G. Readman (EC)

Rotorcraft (RTG) – A. Depitre (FR)

Technology (TTG) – D. Collin (ICCAIA)

Supersonic Aircraft (SSTTG) – K. Orth (ICCAIA)

ICAO Noise Database – J.-L. Kittery (FR)

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Deliverables Deliverables to to CAEP/7 CAEP/7 Proposals for update of Annex 16, Volume I (Aircraft Noise) and the ICAO Environmental Technical Manual for Noise (DOC 9501) Demonstration scheme for both certification and land use planning for rotorcraft Refinement of requirements for wind speed measurements Clarification of applicability language and alignment with airworthiness Reports on technology status Noise – emissions interdependencies

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Future Future Noise Noise Certification Certification Task Task Group Group -- Certified Certified Noise Noise Levels Levels Versus Versus Measured Measured Noise Noise Levels Levels --

Public perception that noise certification levels are not representative of operational noise levels Statistical Correlation analysis between day-to-day operations and certification noise levels

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Correlation Correlation Study Study Worldwide cover 11 Airports: US, EU, AUS

Wide range of aircraft studied >150 aircraft engine combinations with sufficient data to draw reliable conclusions

Both take-off and approach

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Recommendation Recommendation to to CAEP/7 CAEP/7

Do not change the current scheme due to high degree of correlation

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Future Future Work Work -- Main Main Issues Issues --

Technical issues Technology Noise-emissions trade-offs Supersonic transport

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Technology Technology // Noise-Emissions Noise-Emissions Trade-offs Trade-offs

Aircraft Noise Needs to Be Balanced with Other Environmental Design Requirements Benefit

Higher Component efficiencies

Reduced

Increased Overall Pressure Ratio & Temperatures

Fuel Consumption

Penalty

Increased NOx

& CO2 emissions Increased Bypass Ratio

Increased aircraft weight and drag

Reduced Noise Nacelle Definition: long versus short duct

(influences range and operating costs)

¾ Technology: Provide information and advice on mid- and long-term noise reduction technology prospects ¾ Trade-offs: Study the relationship between noise and emissions trade-offs

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Supersonic Supersonic Transport Transport (SST) (SST)

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Supersonic Supersonic Transport Transport -- Future Future Work Work -Not only the noise during take-off and landing has to be considered, but also the sonic boom during flight Key issue is the results of supersonic research, and if it provides a sufficient basis, the timely establishment of appropriate ICAO environmental standards and practices Even if the boom itself is barely audible, building response (rattle) might cause significant reactions from the public Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Boom Boom shaping shaping (1) (1)

Baseline F5E

Modified F5E

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Boom Boom shaping shaping (2) (2)

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Supersonic Supersonic Transport Transport -- Future Future Work Work -Investigate adoption of current subsonic noise rules for supersonic standards and make recommendations as appropriate Assess the extent of knowledge and decide if it is appropriate to consider drafting Standards for sonic boom Monitor and report on research to characterize, quantify and measure sonic boom signatures and their acceptability Monitor and report on status of SST projects and expectations for their operation (nature, frequency etc.)

Bangkok, 6 to 7 November 2006

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Noise Certification Workshop

Bangkok, 6 to 7 November 2006

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