A semi-analytical model for the prediction of the broadband noise due to the interactionbetween turbulent rotor wakes and a rotor in contra-rotating propfans (CRPs) is presented.The unsteady loading of the rear rotor is modelled using classical isolated flat-plate theory.Strip theory is used to treat the spanwise variations of aerodynamic quantities and bladegeometry. The turbulent wake is assumed to be homogeneous and isotropic that is modulatedby a wake train of wake profiles and is modelled using an analytical 3D turbulentvelocity spectrum (Von Karman’s model). The model is presented in detail and insight intoits modal behaviour is provided. Predictions and measurements differ by no better than14dB. This may indicate the presence of othe...
Due to their inherent noise challenge and potential for significant reductions in fuel burn, counter...
This paper describes an analytic model for the prediction of the broadband spectrum of the sound pow...
The turbulent wakes generated by a rotor interacting with outlet guide vanes is one of the dominant ...
A semi-analytical model for the prediction of the broadband noise due to the interaction between tur...
A semi-analytical model for the prediction of the broadband noise due to the interaction between tur...
In recent years, there has been growing interest in contra-rotating open rotors (CRORs) for use as t...
Requirements to improve the propulsive efficiency of aircraft engines have revived interest in contr...
This paper presents a comparison between predictions and measurements of the broad-band noise genera...
In this paper a semi analytic model for rotor - stator broadband noise is presented. The work can be...
The present study aims at improving and assessing a previously presented analytical model for the br...
This thesis describes a frequency domain formulation for predicting the broadband self-noise due to ...
In recent years, there has been growing interest in contra-rotating open rotors (CRORs) for use as t...
Application of previously formulated semi-analytical models for the prediction of broadband noise du...
Due to their inherent noise challenge and potential for significant reductions in fuel burn, counter...
This paper presents results derived from a study investigating the rotor wake-OGV interaction source...
Due to their inherent noise challenge and potential for significant reductions in fuel burn, counter...
This paper describes an analytic model for the prediction of the broadband spectrum of the sound pow...
The turbulent wakes generated by a rotor interacting with outlet guide vanes is one of the dominant ...
A semi-analytical model for the prediction of the broadband noise due to the interaction between tur...
A semi-analytical model for the prediction of the broadband noise due to the interaction between tur...
In recent years, there has been growing interest in contra-rotating open rotors (CRORs) for use as t...
Requirements to improve the propulsive efficiency of aircraft engines have revived interest in contr...
This paper presents a comparison between predictions and measurements of the broad-band noise genera...
In this paper a semi analytic model for rotor - stator broadband noise is presented. The work can be...
The present study aims at improving and assessing a previously presented analytical model for the br...
This thesis describes a frequency domain formulation for predicting the broadband self-noise due to ...
In recent years, there has been growing interest in contra-rotating open rotors (CRORs) for use as t...
Application of previously formulated semi-analytical models for the prediction of broadband noise du...
Due to their inherent noise challenge and potential for significant reductions in fuel burn, counter...
This paper presents results derived from a study investigating the rotor wake-OGV interaction source...
Due to their inherent noise challenge and potential for significant reductions in fuel burn, counter...
This paper describes an analytic model for the prediction of the broadband spectrum of the sound pow...
The turbulent wakes generated by a rotor interacting with outlet guide vanes is one of the dominant ...
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