- Glenn Research Center: Small Aircraft Propulsion - Provides information on a program to transform the performance of small aircraft by developing revolutionary new engines. The resulting new propulsion systems include the GAP Diesel Engine and the FJX-2 Turbofan Engine.
- Turbo & Jet Engine Research Laboratories - Israel Institute of Technology. Does theoretical and experimental research and development work in jet engines and gas turbines, for high-efficiency low NOx small-medium engines.
- Ultra-Efficient Engine Technology Program - NASA sponsored program to research and develop next generation aircraft engines.
