Semi Empirical Jet Noise Modelling for Cabin Noise Predictions -- Acoustic Loads in the Geometric Near Field

The results of in-flight experiments to determine the structure of the sound field in the cabin and pressure fluctuation fields on the surface of the fuselage of the RRJ-95NEW-100 prototype aircraft are presented here. Wall pressure fluctuation spectrums are obtained for three zones of measuring windows (forward, center, and rear fuselage) in cruising flight mode. The effect of the jet on the pressure fluctuation levels in the tail fuselage is considered. For an aircraft without an interior, the contribution of the main sources to the total intensity calculated through A-weighted overall sound pressure levels is determined. It has been determined that the main noise sources in the cabin of the RRJ-95NEW-100 prototype aircraft in cruising flight mode are pressure fluctuation fields on the fuselage surface (turbulent boundary layer noise) and the air conditioning system. The ratio between the sources varies along the length of the cabin.

show abstract

Semi Empirical Jet Noise Modelling for Cabin Noise Predictions -- Acoustic Loads in the Geometric Near Field

Cited by 3 publications

References 8 publications

RANS/CAA based Prediction of Jet Mixing Noise in Cruise Flight

RANS/CAA based Prediction of Jet Mixing Noise in Cruise Flight

Contributions of Different Sources to Cabin Noise of a Superjet 100 in Cruise Flight Condition

Analysis of the Sound Field Structure in the Cabin of the RRJ-95NEW-100 Prototype Aircraft

Contact Info

Product

Resources

About