Emerging propulsion and power needs drive combustion systems towards higher efficiencies and power densities. New approaches are being developed in small-scale systems (on the order of a hundred of watts to hundreds of kilowatts). Efficient small-scale propulsion (ESSP) and power research has focused on the coupling of combustion heat release into useful energy conversion. Research has included optimization of small-scale unmanned air vehicle propulsion and power systems, including conversion of Otto cycle (spark ignition) engines to heavy fuels, advanced ignition systems, propeller/engine optimization, and development of enabling components and engine concepts for high power density systems. Small-scale demonstrations of advanced turbine concepts are also being explored including innovative cycles. Other areas of interest include hybrid systems, diesels with high power density, regenerative, and other novel internal and external combustion cycles. A wide variety of research opportunities are available utilizing the Small Engine Research Laboratory, including high-speed instrumentation (up to 5 Mhz per channel), high-speed imaging (up to 1,000,000fps), laser diagnostics, computational tools, and research engines. Recent projects have included plasma ignition studies and engine combustion research using alternative/bio fuels.

 

Reference

Helfrich TM, et al: Journal of Propulsion and Power 23: 2007

 

key words

Heavy fuel engine; Air-breathing propulsion; Gas turbine; Propeller; Internal combustion engine; External combustion engine; High power density; Hybrid propulsion/power;

Citizenship:  Open to U.S. citizens

Level:  Open to Postdoctoral and Senior applicants