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

Claim 14:
15. A system for analysing flow machine behaviour, comprising:
a flow machine having a rotor configured to interact with a flow field and a plurality of sensors for sensing performance parameter values for the rotor and an operational rotor condition; and,
a data processor configured to
receive the performance parameter values data values and mass flow values for the flow machine at one or more defined rotor condition value, the performance parameter and mass flow values defining a two-dimensional array of data in which points for a common rotor condition are identifiable,
determine or receive exit mass flow values for the flow downstream of the rotor,
identify one or more point in the received performance data,
interpolate 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, and output the corresponding one or more points for the sub-idle rotor condition.