Fundamentals of Aeroacoustics

  • Course Content
  • Requirements & Materials
Course Content

Aeroacoustics is the study of the generation of sound by unsteady airflow. It covers the sound generated by jets, fans, rotating blades, flow impingement, and any devices that interact with or introduce an unsteady motion of the air. This course will introduce the attendees to the following topics within the overall umbrella of aeroacoustics: basics of acoustics, acoustics terminology, sound metrics, manipulating decibels, wave propagation conducting high-caliber acoustic experiments, and the role of psychoacoustics.

Requirements & Materials



1. A basic course either in Fluid Mechanics or Thermodynamics.


1. Familiarity with solving basic partial differential equations.





Required (student must provide)

  • Personal notebooks and pen
  •  A smartphone to download a free App for measuring noise spectrum.

Provided (student will receive)

  • A copy of the PowerPoint presentation


Who Should Attend

  • want to measure the noise of aircraft and any aero-machinery.
  • want to design quiet machinery and aerospace vehicles
  • are involved in using commercial codes for predicting aircraft noise
  • want to understand the role of high-level noise on jet mixing or separated flows.
  • want the noise to be used as a non-lethal weapon
  • are involved in assessing noise impact on personnel including determining the performance of earplugs
Computer science students coding on computers

What You Will Learn

  • Definitions of Noise Units and how noise is measured.
  • Manipulating Decibels.   
  • Wave equations and their use in understanding noise propagation in the open air, in rectangular, and cylindrical ducts.
  • Physics of Resonances, jet noise, cavity noise, impingement noise.
  • Basics of acoustic Signal processing and making accurate noise measurements.
Occupational safety and health professionals collaborating on job site

How You Will Benefit

  • Understand how decibels are added and learn facts like why 0 dB plus 0 dB is not 0 dB; how masking works and how to make accurate noise measurements; how to develop empirical jet noise schemes; be introduced to various acoustic terms such as free field, geometric far-field, beamforming, PNL, PNdB, etc.
  • Become familiar with how microphones work and what corrections are needed to produce accurate data and how to interpret noise spectra.
  • Understand how sound propagates in the open and in rectangular and cylindrical ducts and what produces resonances.
  • Understand how jet plumes develop and how they produce noise, both subsonic and supersonic jets.
  • Gain an understanding of how bomb bays screech and how impinging jets make loud whistles.
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    Taught by Experts in the Field

The course schedule was well-structured with a mix of lectures, class discussions, and hands-on exercises led by knowledgeable and engaging instructors.

- Abe Kani


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