I have added one of my most sought after pieces to the collection signed by X-15 test pilot and Space Shuttle astronaut Joe Engle.
Test pilot Joe Engle made 16 flights in the X-15 rocket plane and qualified as a Military astronaut before he became a NASA astronaut and flew two Space Shuttle missions. In 1981, Engle commanded the second flight of Space Shuttle
Columbia beginning November 12, 1981, with pilot Richard Truly in the first spaceship to return to orbit. On this flight, Engle performed manual flight test data maneuvers throughout the re-entry and became the only pilot to manually fly a vehicle from Mach 25 in space to touchdown. In 1985 he commanded a five-man crew on the 20th shuttle flight, a satellite deploy and repair mission.
Joe Engle is a graduate of the USAF Experimental Test Pilot School and the Aerospace Research Pilot School. From 1963 to 1966, Engle was a test pilot in the X-15 research program at Edwards Air Force Base. Three of his 16 X-15 flights exceeded 50 miles in altitude and as a result he became the youngest pilot to qualify as an astronaut.
In 1966, NASA selected Engle to join its Group 5 astronaut class. After serving as a backup crewman in the Apollo program, he served as commander of one of two crews that flew several Space Shuttle Approach and Landing Test flights in 1977. During these tests, the orbiter
Enterprise was carried to 25,000 feet bolted on top of a Boeing 747 carrier aircraft and then released for its two-minute glide flight to a landing in the California desert.