Project Description The F-15B Research Testbed is a modified twin-engine jet fighter that provides NASA, industry, and universities with long-term capability for the efficient flight test of aerodynamic, instrumentation, propulsion, and other flight research experiments. This aircraft is a unique airborne resource, and is considered by researchers to be a virtual "flying wind tunnel÷·_Ä__ and reliable supersonic testbed. In addition to flying research missions, Dryden's F-15B also is used for crew training, pilot proficiency, and safety chase support for other research aircraft. Bearing NASA tail number 836, the F-15B is about 64 feet long and has a wingspan of just under 43 feet. It is powered by two Pratt and Whitney F100-PW-100 turbofan engines that can produce almost 24,000 pounds of thrust each in full afterburner. It is capable of dash speeds of Mach 2.3, or 2.3 times the speed of sound, at altitudes of 40,000 to 60,000 feet. With the Flight Test Fixture mounted beneath the fuselage in place of the standard external fuel tank, speeds are limited to Mach 2.0. The aircraft has a full-fuel takeoff weight of about 42,000 pounds and a landing weight of about 32,000 pounds. It has aerial refueling capability for extended-duration research missions. Photo Description Group photo following the 300th NASA Dryden flight of F-15B #836 October 20, 2006 Nasa Photo /Tom Tschida ED06-0196-1