ESDU 12001 provides a means of estimating the noise levels in one-third octave bands emanating from the turbine within a gas turbine engine which may be either static or flying. The prediction program accompanying this Item is based on a modified version of the Smith and Bushell method. The main input parameters that need to be specified are the turbine mass flow rate through the engine core@ the total temperature at the turbine exit@ the relative tip speed of the last rotor@ the stator-rotor gap-chord ratio@ the shaft speed and the number of blades in the last rotor stage. ESDUpac A1201 can be run to carry out the estimation. ESDUpac B1201 can be used to facilitate the generation of input files. MATLAB? users can use VIEWpac M1201 to run the program@ entering input data through a graphical user interface. VIEWpac M1201 also generates a graphical output.
ESDU 12001-2012 history
2012ESDU 12001-2012 Prediction of turbine noise from aero-engines