Development of capability to understand & predict sub-idle & idle behaviour of geared VHBR engines

To develop capability to understand and predict sub-idle & idle behaviour of geared VHBR engines. Identify novel methods to model, manage & improve performance & operability at idle & sub-idle. Toolset to be matured to TRL6 by validation against test data collected from UltraFan™ demonstrator program. Please refer to the full and formal topic descriptions published in this call.