Blastwave Jet Company
Information on a little known bent pipe blast wave or pulse jet engine.
Boeing Technology Services - Aerodynamics
Wind tunnel test facilities
NASA General Aviation Propulsion Program
Program to improve small airplane engines.
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.
Ultra-Efficient Engine Technology Program
NASA sponsored program to research and develop next generation aircraft engines.