Propulsor Testing In a wind tunnel at NASA’s Glenn Research Center, engineers test a fan and inlet design, called a propulsor, that could use four to eight percent less fuel than today’s advanced aircraft. NASA March 31, 2017 Get our newsletter! Get our newsletter! You Might Also Like Station Nightlights May 12, 2014 A Very Visible Cold Front August 25, 2014 Bring the Flow July 31, 2015 VAB Readies for SLS August 5, 2016 Sunflowers in Space April 30, 2014 Get the latest stories in your inbox every weekday. Email Powered by Salesforce Marketing Cloud (Privacy Notice / Terms & Conditions)