ESDU 96027:2012

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 11005. 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 input format is explained and a worked example
illustrates the format of the output data.