This past September Dr. Alan Epstein, vice president of Technology and Environment for Pratt & Whitney, addressed the ONCC membership regarding his company’s research on quieter engines. He explained how the Geared Turbofan (GTF) engine is revolutionizing the industry and as aircraft engines become quieter, it would be up to aircraft manufacturers to reduce airframe noise.
Both Pratt & Whitney and NASA have continued to test quieter engines and airframe technology. Here are the latest advancements: