Blastwave Jet Company
- Information on a little known bent pipe blast wave or pulse jet engine.
- http://blastwavejet.com

Turbo & Jet Engine Research Laboratories
- Israel Institute of Technology. Does theoretical and experimental R&D work in jet engines and gas turbines, for high-efficiency low NOx small-medium engines.
- http://jet-engine-lab.technion.ac.il

Ultra-Efficient Engine Technology Program
- NASA sponsored program to research and develop next generation aircraft engines.
- http://www.ueet.nasa.gov

NASA General Aviation Propulsion Program
- Program to improve small airplane engines.
- http://www.grc.nasa.gov/WWW/AST/GAP/