PAKO (Psychoacoustic Optimization of Airplanes)

Key Info

Basic Information

Funding Program:
Luftfahrtforschungsprogramms LuFo V-2
Research Area:
Noise Research,
Acoustic Virtual Reality,
Numerical Acoustics


The overall objective of PAKO is to prove the possibility of reducing the annoyance from aircraft noise in the planning stage of the design process. Therefore, psychoacoustic parameters are optimized regarding low annoyance while other aircraft design parameters are changed only within acceptable boundaries. Therefore, the Institutes ILR, ITA and AIA from RWTH university are working on the development of aircraft design strategies on one hand and on the advancement of acoustic analysis tools on the other hand. The goal is a consolidated prediction about the potential of optimizing aircraft configurations with regard to psychoacoustic metrics. At ITA, the following research topics are investigated: · Modelling of the aircraft engine as a highly complex sound source by substituting it with a simpler source arragement. The goal is the approximation of the acoustic far-field radiation which has a sufficient performance for real-time application. · Implementation of an extensive model for atmospheric sound propagation which includes multiple curved propagation paths (eigen rays) in inhomogeneous media. Investigation of fast, adaptive ray-tracing algorithms and searchg strategies for simulating moving sound sources. · Integration of the aforementioned work packages (modeling of source and propagation) into the existing auralization system at RWTH University