NASA's highly modified NF-15B research aircraft cruises over Southern California's Tehachapi Mountains near Lake Isabella during a research mission.

The jagged ridges of Southern California's Tehachapi Mountains form the backdrop to NASA's brightly-colored NF-15B testbed aircraft during a research mission.

NASA’s Crossflow Attenuated Natural Laminar Flow (CATNLF) Project Tests Model Wing on F-15

Two small Range Safety System antennas are located just behind the engine inlets of NASA's NF-15B research aircraft as it banks away from the chase plane.

Range safety and phased-array range user system antennas validated in the ECANS project can be seen just behind the cockpit on NASA's NF-15B research aircraft.

One of NASA's two F-15 research aircraft gets refueled in mid-air over Lake Isabella from a USAF KC-135 tanker while NASA's other F-15 flies chase alongside.

NASA's F-15B conducts a local Mach investigation flight over California's Mojave Desert.

New range safety and range user system antennas for the ECANS project can be seen just behind and to the left of the cockpit on NASA's NF-15B research aircraft.

NASA Dryden's highly modified F-15B aircraft, tail number 837, serves as an Intelligent Flight Control System (IFCS) research testbed aircraft