Patent ID: 11905892
Assignee: ROLLS-ROYCE PLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  G | IPC F  G

Claim 13:
14. A non-transitory computer readable storage medium comprising machine readable instructions for a data processor to determine performance characteristics of a flow machine having a rotor interacting with a flow field, by:
receiving performance data for the flow machine comprising data values of a performance parameter of the rotor and mass flow for the flow machine at one or more defined rotor condition, the performance data defining a two-dimensional array of data in which points for a common rotor condition are identifiable;
determining or receiving exit mass flow values for the flow downstream of the rotor;
identifying one or more point in the received performance data; and,
interpolating from the one or more point to a corresponding one or more point at a sub-idle rotor condition based on a correlation of the exit mass flow values for the points.