ESDU 96027 provides a program for calculating the unsteady local lift coefficient on an aerofoil section of the blade in subcritical flow. This forms part of the data input required by the propeller noise prediction program introduced in ESDU 95029. The orientation of the propeller axis is described by the Euler angles of yaw and pitch relative to the flight axis. The method is applicable to an aircraft on a straight@ steady flight path that need not be horizontal. The program@ known as ESDUpac A9627@ is written in Fortran 77. It is provided on disc in the software volume@ uncompiled and compiled within ESDUview@ a user-friendly interface that prompts on-screen for input data. The input format is explained and a worked example illustrates the format of the output data.
ESDU 96027 A-1997 history
2012ESDU 96027 A-2012 Estimation of the unsteady lift coefficient of subsonic propeller blades in non-axial inflow
2011ESDU 96027 A-2011 Estimation of the unsteady lift coefficient of subsonic propeller blades in non-axial inflow
1997ESDU 96027 A-1997 Estimation of the unsteady lift coefficient of subsonic propeller blades in non-axial inflow.