McDonnell Douglas YC-15
Videos
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.
Pratt & Whitney JT8D
Videos
The Pratt & Whitney JT8D is a low-bypass turbofan engine introduced by Pratt & Whitney in February 1963 with the inaugural flight of the Boeing 727. It was a modification of the Pratt & Whitney J52 tu
The JT8D is a low-bypass turbofan often used on early narrowbody jetliners
Cutaway showing the configuration: twin fan, axial compressor stages, cannular combustors and 4-stage turbine
Cannular combustor
20 in (510 mm) diameter rotor and bypass stator