Understanding Aircraft Noise: From Fundamentals to Design Impacts and Simulations – Online Short Course (Starts April 25, 2023) 25 April - 11 May 2023 Online

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  • From 25 April 2023 – 11 May 2023 (3 Weeks, 12 Lectures/Classes, 12 Total Hours)
  • Every Tuesday and Thursday at 1300-1500 Eastern Time (all sessions will be recorded and available for replay; course notes will be available for download)
  • All students will receive an AIAA Certificate of Completion at the end of the course

Aircraft noise is a prominent source of media headlines and a concern for operators and decision-makers, particularly at a time when further airport expansion is made difficult by land planning restrictions and various environmental regulations at local and international level. This course will address understanding of the impact of aviation noise. It will focus on the engineering aspects of generation, propagation and mitigation of noise from aircraft powered by gas turbine engines. There will be live demonstrations with the FLIGHT-X environmental simulation program. This training is based on the AIAA book: A FilipponeAdvanced Aircraft Flight Performance, Including Environmental Performance (Chapters 17 to 20), 2nd edition.

Learning Objectives

  • Understand the role of international and local regulations in noise emissions and management
  • Understand key metrics used for assessment of noise annoyance and certification
  • Understand the sources of noise from aircraft: aerodynamics and propulsion
  • Understand the role of operational changes on noise emissions
  • Learn about noise measurement techniques
  • Learn about basic noise simulation strategies
  • See detailed course outline below
Who Should Attend
The course is addressed to those who wish to increase their technical competence in the field of aviation noise. This includes professionals working with airports, airline operators, regulatory bodies and environmental organizations, noise engineers, post-graduate students in aerospace engineering and related fields, technologists scanning aviation trends and competition.

Course Fees (Sign-In To Register)
- AIAA Member Price: $695 USD
- Non-Member Price: $895 USD
- AIAA Student Member Price: $395 USD

Classroom hours / CEUs: 12 classroom hours / 1.2 CEU/PDH

Cancellation Policy: A refund less a $50.00 cancellation fee will be assessed for all cancellations made in writing prior to 5 days before the start of the event. After that time, no refunds will be provided.

Contact: Please contact Lisa Le or Customer Service if you have any questions about the course or group discounts.

Course Outline
  • Each section is 60 minutes, including 5-10 minutes of questions/answers
  • There are two sections/class, and 2 classes/week
  • The course is completed in 3 weeks (12 hours of classroom time)

Section 1: Critical introduction to aircraft noise

  • Psychoacoustics effects of aircraft noise (commercial and military)
  • Basic definitions of sound and noise
  • Airports regulations, noise certificates, and aircraft noise trends
  • Legal aspects of aircraft noise (including ICAO, FAA)
  • Questions and Answers
Section 2Definition of noise metrics
  • Instantaneous noise metrics
  • Tonal and broadband noise
  • Time-averaged metrics (ANSI definitions)
  • Integral metrics (EPNL, SEL)
  • Short- and long-term metrics (day, season, year)
  • Noise quotas and Quota Counts (QC)
  • Practical Demo: interpreting key noise metrics
  • Questions and Answers

Section 3Aircraft noise measurements techniques

  • Standard equipment, description, accuracy (SLM, or sound level meters)
  • Noise event identification
  • Measurement locations; integration with other systems (FDR, GPS, ADS-B/Mode-S)
  • Automatic noise tracking at airfields (FIDS)
  • Questions and Answers

Section 4: Practical demo of noise measurements

  • Statistical analysis and data processing
  • Beamforming techniques
  • Comparison between departure and arrival noise signatures
  • Noise characterisation (turbofan, turboprop)
  • Questions and Answers

Section 5Airframe Noise Sources

  • Engineering systems and network analysis
  • Sources, characterisation, modelling, prediction
  • Lifting surfaces noise (broadband noise models)
  • Landing gear noise (various alternatives)
  • High-lift system noise
  • Other non-propulsive noise sources: cavities, wires
  • Questions and Answers

Section 6Propulsion Noise Sources, Part I

  • Network analysis of propulsion noise
  • Fan system noise
  • Acoustic liners
  • Questions and Answers

Section 7Propulsion Noise Sources, Part II

  • Engine core noise (compressor, combustor, gas turbines)
  • Jet noise and corresponding models (single and dual stream jets)
  • Jet noise shielding
  • Auxiliary Power Unit (APU) noise
  • Practical Demo: Use of APU on the ground
  • Questions and Answers

Section 8: Propeller and propfan noise

  • Nature of noise generation
  • Tonal noise modelling
  • Broadband noise models
  • Minimum-noise design and configurations: synchrophasing, etc.
  • Contra-rotating propeller noise
  • Practical Demo: historical review of contra-rotating propeller noise
  • Questions and Answers

Section 9Introduction to aircraft noise propagation

  • Noise propagation models, focus on long-range issues
  • Effects of atmospheric winds and humidity
  • Low-order methods: Noise-Power-Distance (NPD)
  • High-order methods
    • Wave equation
    • Ray tracing methods
    • Other field methods
  • Questions and Answers

Section 10Practical demo of aircraft noise propagation

  • Effects of topography
  • Ground reflection, noise shielding, background noise
  • Questions and Answers

Section 11Aircraft noise reduction by trajectory optimisation

  • Elements of multi-objective optimisation
  • Trajectory constraints and typical operations
  • Noise abatement procedures: NADP (noise abatement departure procedures)
  • Practical Demo: Steep-descent, continuous descent, displaced landing; noise breakdown analysis
  • Questions and Answers

Section 12Noise footprints, effects of multiple aircraft movements

  • Noise mapping at airfields
  • Role of best-practice methods for airfield noise mapping
  • Practical Demo: Examples of noise footprints (single/multiple aircraft operations)
  • Case Study: London Heathrow airport
  • Questions and Answers

Course Delivery and Materials

  • The course lectures will be delivered via Zoom. You can test your connection here: https://zoom.us/test
  • Access to the Zoom classroom will be provided to registrants near to the course start date.
  • All sessions will be available on-demand within 1-2 days of the lecture. Once available, you can stream the replay video anytime, 24/7.
  • All slides will be available for download after each lecture. No part of these materials may be reproduced, distributed, or transmitted, unless for course participants. All rights reserved.
  • Between lectures during the course, the instructor(s) will be available via email for technical questions and comments.


Prof. Antonio Filippone
holds a chair in computational aerodynamics at the School of Engineering, University of Manchester. At Manchester he teaches rotorcraft modules, aerodynamics and design courses. He has contributed over 150 technical papers, 4 books, 12 book chapters in the fields of applied aerodynamics and afferent fields. He is a Senior AIAA member, a Fellow of the Royal Aeronautical Society of London, a Fellow of the Institute of Mechanical Engineers and a member of the Vertical Flight Society. As an AIAA member, he has contributed in the past to the applied aerodynamics and flight mechanics technical committees. This course has been running for 7 years both in person and online.


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