28th Congress of the International Council of the Aeronautical Sciences, 23 - 28 September 2012, Brisbane, Australia
Paper ICAS 2012-3.9.4

STUDY ON NOISE OF COUNTER ROTATING FAN MODELS AT CIAM ANECHOIC CHAMBER

Y. Khaletskiy, V. Mileshin, J. Talbotec*, E. Nicke**
CIAM, Russian Federation; *Snecma, France; **DLR, Germany

Keywords: noise, counter rotating fan, combination frequency

It has been considered acoustic features of the three models of ducted counter rotating fan at the CIAM anechoic chamber. CRTF1 model blades were manufactured from thin solid titanium. Profile of CRTF2a model blades simulates blades made of composite material. Third model CRTF2b has been manufactured according to «Blisk» technology.

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