Innovative approaches for reducing CO₂ emissions of aviation engines part 5: Turbo reaction-controlled internal combustion system TRCS

Innovative approaches for significantly reducing the aviation Greenhouse Gas (GHG) emission need to be evaluated based on simple calculation methodology, viz. Numerical Propulsion System Simulation (NPSS) that can be easily and reliably executed by an academic research group with guidance provided by a panel of experts from industry, FAA, NASA, DOE and DOD. Part 1 of the series of papers gives a list of the proposed advanced Brayton cycles for undertaking an extensive study under the FAA program. Part 2 of the series of papers shows that good agreement was achieved between the NPSS calculations and engine data of several engines, including the aero-engines CFM56, CF6-80C, GE90, and industrial engines LM6000 and LMS100 with and without recuperation. Several engine configurations were analyzed in Part 3 leading to selection of the most promising configurations for the follow-on conceptual design effort by potential OEM. Part 4 extended the cycles to introduce the advantage of the LP Turbine Exhaust Driven Thermal (TED-T) secondary cycle for contrail mitigation without performance penalty. In the present paper, the engine layout is simplified by using a fuel reactivity controlled internal combustion concept which when combined optimally with the turbine engine will further reduce CO₂ emission.