Developing the propulsion system for a hydrogen powered commercial passenger aircraft

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The Newcastle university involvement in the H2Gear project focuses on the development of the electrical network for the H2Gear all electric aircraft. This project will be specifically centred on the development of a protection system for the aircraft electrical network, creating optimal fault protection, reconfiguration and discrimination strategies designed to best protect the electrical network from faults. Aircraft fault protection systems and certification have not yet had to cater for fault protection for an all-electric aircraft as past commercial aircraft have also relied on hydraulic and mechanical systems to various extents. Therefore it is first important to establish the requirements for the fault protection system given the inter-reliant nature of on-board networks and the potential for cascading faults in a fully electric system. It should be within the capacity of the protection system to detect when a fault is occurring, determine the nature of the fault and its location, discriminate and execute the correct response to isolate and eliminate faults. Through simulations the effectiveness of these strategies in protecting the network from faults and ultimately ensuring the safe operation of the aircraft will be investigated, as will the practicalities of physically implementing these designs and integrating into the rest of the systems.