This in-flight photo of NASA’s B-52 mothership shows the bomber carrying a subscale model of an Air Force F-15, a remotely piloted vehicle that was used to conduct spin research. The F-15 Remotely Piloted Research Vehicles (RPRV) was air launched from the B-52 at approximately 45,000 feet and was controlled by a pilot in a ground cockpit complete with flight controls and a television screen. The F-15 model in this particular configuration was known as the Spin Research Vehicle (SRV).