NASA F-15 STOL/MTD Research Airplane

On loan to NASA from the Air Force, an F-15 Eagle fighter jet was the focus of the Short Takeoff and Landing/Maneuver Technology Demonstrator research program, which concluded in 1991. The aircraft is seen here inside Building 4826, a hangar at NASA's Armstrong Flight Research Center that was renovated and began use in 2025 as home for the X-59 quiet supersonic technology demonstrator.