Jet-fueled, All-electric Power and Propulsion for Small Unmanned Aerial Systems (SUAS)

Precision Combustion, Inc. (PCI) proposes to develop and demonstrate a fundamentally new, high efficiency, all-electric, power and propulsion concept for small unmanned aerial systems (SUAS). Key drivers are an exceptionally power-dense and robust solid oxide fuel cell, an advanced power generator with best-in-class power density, fuel-flexibility, a simple hybridized system with an energy-dense power system to meet transient loads, and a readily scalable design for various UAS groups. The approach leverages PCI’s core technologies (system design, power and control electronics, packaging). Based on recent developments, a novel combination of electrochemical and mechanical systems will be used to develop an energy dense, advanced, hybrid power generator. Hybridization will enable electricity generation with high efficiency and addresses the need for high slew rates, rapid thermal cycling, fast startup for meeting takeoff/cruise/dash/landing needs. The system will be capable of operating with energy-dense logistic jet-fuels for high system specific energy. System design options will include a tradeoff between high electrical efficiency and specific power. An initial estimate offers significant capital, operational, and capability cost savings per airframe, compared to the baseline. The system has the potential for achieving low acoustic signature, fast startup, and propulsion flexibility.  During Phase I key risks will be identified and mitigated. These include robustness, high altitude operation, acoustic signature, reliability, cost, specific power, and flight duration. If the Phase I is successful, a Phase II effort will be proposed. During Phase II, PCI plans to partner with a UAS integrator. At the end of Phase II, a breadboard power and propulsion system will be demonstrated and an airframe-integrated propulsion design developed to confirm gravimetric and volumetric targets suitable for SUAS applications. If all metrics are met, we shall propose a follow-on effort for airframe integration and flight tests.