This project aimed to support Rolls Royce in the design of a of high temperature flexible PCB and through trials of flexible laminates manufactured from existing and brand new advanced polymers progress the temperature at which a flexible printed circuit can operate from the current state of the art maximum of 200°C into the desired range of 260°C (minimum) up to 400°C (target).

The project also aimed to develop the materials and manufacturing processes that enable this high temperature performance in a large format, such that the required overall length of 5m can be implemented in a single piece multilayer printed circuit, without joints.

Validation to TRL6 was achieved through coupon tests on representative hardware in a bespoke environmental chamber, subjecting the coupons to combined heat and random vibration loading, supported by full size PCBs integrated and tested at engine level.