Air-Steam Hybrid: an Alternative to Internal Combustion-cleaner, more efficient, multi-fuel compatible retrofit-able

An air/steam propulsion system has been developed and key performance attributes have been demonstrated qualitatively: a mixed propellant system can provide immediate power without a boiler, and that power can be varied by varying the ratio of water and air in the propellant mix. What is proposed is an analysis of scaling this very promising technology to propel buses and trains for mass transit use. Successful validation would lead to a proposed vehicle retrofit of a smaller, lighter, more fuel efficient engine in a standard mid-sized or full-sized vehicle, and that engine could operate on fuels other than refined petroleum. These goals are consistent with the subtopic narrative. “Economical and durable technologies and devices for improving safety for riders and transit agency employees, reducing noise and energy consumption, or improving the rider experience. The innovations must be adaptable to existing bus and rail transit vehicles and systems.”