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Showing 1 to 4 of 4 for “"open rotors"”.
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Turbulence ingestion noise of open rotors
Renewed interest in open rotor aeroengines, due to their fuel efficiency, has driven renewed interest in all aspects of the noise they generate. Noise due to the ingestion of distorted atmospheric turbulence, known as Unsteady Distortion Noise (UDN), is likely to be higher for open rotors than for …
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Aerodynamic broadband noise from contra-rotating open rotors
… has been growing interest in contra-rotating open rotors (CRORs) for use as the power plants on aircraft, since they are estimated to burn 20% to 30% less fuel than equivalent turbofan engines for short-haul flights. However, one of the main challenges for their introduction is their very high …
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The Impact of Three Dimensional Flow Anisotropy and Transients on Turbulence Ingestion Noise in Open Rotors
The effect of flow anisotropy and three dimensional separation on the turbulent structure and radiated turbulence ingestion noise of a rotor in two experimental configurations is studied. The first consists of a non-axisymmetric boundary layer wake ingested by a rotor mounted at the aft of a body …
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High Fidelity Open Rotor Noise Prediction
… for the next generation of jet engines. An ``open rotor'' replaces the fan of the turbofan with a set of external rotors. This has the potential to offer a significant improvement in propulsive efficiency, but the design for low noise is a key challenge. Hence, high fidelity noise prediction …