05 - Propulsion
AEROACOUSTIC PERFORMANCES OF A LOW-NOISE AIRFOIL CASCADE WITH SERRATED LEADING EDGES: PREDICTIONS AND MEASUREMENTS
C. Polacsek¹, M. Buszyk¹, R. Barrier¹, V. Clair², E. Salze²; ¹ONERA, France ;²LMFA, France
This paper presents a collaborative work realized in H2020 InnoSTAT project devoted to the study of innovative stators for the reduction of turbofan noise. Leading edge serrations designed by Onera are implemented on the airfoils of rectilinear cascades tested in the KCA rig of ECL. PWL reductions of about 4-5 dB obtained by Onera's prediction methods are compared to the acoustic measurements.