Duration: 18 months
The growing demand for more efficient, reliable, and cost-effective space propulsion has driven research towards detonation-based engines like Rotating Detonation Engines (RDEs) and Pulsed Detonation Engines (PDEs). While RDEs offer significant efficiency gains through pressure gain combustion, they are hindered by operational instability due to unpredictable modes of operation. This proposal presents a hybrid propulsion system that combines PDEs as both detonation wave initiators and continuous operators within RDEs. This integration allows for precise control over the initiation and sustained timing of detonation waves inside the RDE, significantly improving the predictability of its operational map. By reducing unstable behaviour and enhancing overall performance, the hybrid system offers a more reliable propulsion solution. Utilizing H2/O2 as propellants, the system is designed for controlled detonation wave propagation, providing more stable and efficient performance throughout continuous operation. Given its early stage of development, this concept remains at a low TRL, as the control of RDE operation modes using small-scale PDEs has not yet been fully formulated. The project will focus on proof-of-concept demonstrations and comparative performance analysis against conventional propulsion systems, with a primary emphasis on enhancing the predictability of RDE operational modes. This hybrid technology not only addresses a proposed activity identified in the IP-CCI Workshop but also aligns with ESA’s Agenda 2025 goals of advancing Europe’s leadership in innovative propulsion systems, supporting greener, more efficient space transportation solutions for future exploration missions.
