Improved Reliability Laser Based Ignition System

Navy needs improved reliability ignition systems for aerospace engines to reduce flameouts at high altitudes as well as reduce maintenance cost because of the need to frequently replace the conventional spark plug igniters for fuel ignition in the engines. Laser ignition, whose feasibility has been demonstrated in the past decade for conventional natural gas and gasoline engines is very well suited for ignition in the aircraft engines. They would be very reliable and would reduce the spark plug related repairs needed for the aircraft engines. They would also reduce engine flameout and reduce the relight time for the engines, improve the fuel efficiency and reduce the NOx emissions.The new technology of high power VCSEL pumps and VCSEL pumped solid state lasers developed at Princeton Optronics is finding application toward laser spark plugs for automobile and natural gas engine applications. Princeton Optronics studied the feasibility of laser ignition in phase I and proposes to develop the prototype in phase II.