Aircraft Engine Studies: Modelling next generation CROR aircraft
Last updated on April 5, 2022
Contra-rotating open rotors (CRORs) show promise for use in future aircraft propulsion systems, but suffer from high noise emissions. Both tonal and broadband noise emissions are produced by CRORs. Historically, tonal noise has been more extensively studied because it was thought to be the dominant noise type. However, recent studies have shown that broadband noise is also significant. Therefore, research is needed to better understand the generation of CROR broadband noise. The project concentrates on two areas of CROR broadband noise. Firstly, analytic models are being developed to improve industrial modelling of the noise. Secondly, the assumptions which are made in the analytic models are being tested with the use of high-order computational aeroacoustic (CAA) methods.
