Ultra Electronics is developing a hub-integrated propeller ice-protection system, which eliminates the high-maintenance power slip ring used in conventional systems. The HIPPS generates and switches power between the blades at the hub, reducing weight and aircraft-generator power requirements. The HIIPS is suitable for four- or six-blade propellers. Ultra will have a flight-worthy system available by July and is working with Dowty Aerospace Propellers to flight-test the system later this year. Design has been completed on system for both Dowty and Hamilton Standard propellers on the Saab 340 regional-airliner.

Source: Flight International