Cleaner, Greener Fuel Nozzles (IMAGE) Iowa State University Caption Hui Hu, left, and Zifeng Yang are working with engineers from Goodrich Corp. to analyze the performance of the nozzles that spray fuel into jet engines. Credit Bob Elbert photo/Iowa State University. Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.