Tail Propulsor Generator for NASA SUSAN Sub-Scale Flight Demonstrator

Hinetics performed a detailed study in Phase I to evaluate the integration of a lightweight, high efficiency 150 kW generator-drive subsystem within the SUSAN concept aircraft. Analysis on potential subsystem and system level integration strategies ensured stability and reliability were maintained across all operating conditions of the propulsion system and while maximizing the system level performance. This has set the stage for hardware development for a sub-scale SUSAN demonstration in this Phase II program, helping to increase the TRL of critical technologies for future low carbon aircraft. The Phase II project will include prototype construction of the machine and integration with a Lycoming O-360 engine to de-risk overall system considerations. Because the full scale SUSAN concept utilizes an aft turbine and our topology has clear weight and efficiency benefits at higher shaft speeds, Hinetics will design, build, and demonstrate a higher speed generator for mating to a COTS turboshaft. In parallel, a US-based subcontractor, Beehive Industries, will perform a study on the potential of improving turboshaft efficiencies in the 150 kW power range to become more competitive with combustion engine solutions while maintaining low system mass.