McDonnell Douglas Corporation was a major American aerospace manufacturing corporation and defense contractor. It was formed by the merger of McDonnell Aircraft and the Douglas Aircraft Company in 196
Douglas F3D Skyknight, c. 1952
Thor Able with Pioneer 1 at Cape Canaveral, Florida
The McDonnell Douglas YC-15 is a prototype four-engine short take-off and landing tactical transport. It was McDonnell Douglas' entrant into the United States Air Force's Advanced Medium STOL Transpor
Second YC-15 prototype in flight
First YC-15 prototype conducting flight testing, accompanied by an F-4 Phantom II
XM723 prototype being offloaded from a YC-15 during a test, 1977
The larger C-17 Globemaster III, derived from the YC-15, shares a similar configuration, although it has swept wings.