Propulsion Airframe Aeroacoustics (PAA) Aids in Quieting The Skies


Today, aircraft manufacturers are examining every component that goes into an aircraft, not just from an economic standpoint, but from the impact it will have on the environment. High on the list is determining the amount of noise aircraft generate, particularly that associated with take-off and landing. One tool that is available to help them predict noise levels from any given aircraft is Propulsion Airframe Aeroacoustics (PAA) analysis.


Propulsion Airframe Aeroacoustics (PAA) analysis for propulsion and airframe integration requires flow computations over complex geometries with engines, pylons, wings, and flaps. The unstructured mesh generation capabilities of TetrUSS are ideally suited for the rapid generation of grids on such complex geometries. USM3D flow solutions can then be used in conjunction with noise prediction codes such as JeT3D, which help aircraft manufacturers design airplanes that will meet increasingly stringent noise regulations.


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