The competition actually began in 1970 when the Air Force and key aerospace contractors began the Tactical Aircraft Investigation (TAI) to look at potential new airlifters. Boeing YC-14 McDonnell Douglas YC-15: McDonnell Douglas YC-15. Boeing YC-14 Military transport aircraft.

The McDonnell Douglas YC-15 had four engines, while the Boeing version had two. I n 1972, the U.S. Air Force issued the Advanced transport STOL transport program for a new medium airlifter that capable of operations into battle zones with short, temporary airfields. In the end, none of the four designs got beyond the drawing boards. Posted by 5 years ago. Close. 67. The YC-15 used large double-slotted flaps that extended over 75 percent of the wingspan to enhance STOL capabilities. However, the competitor to the YC-14, the YC-15, used externally blown flaps that partially relied on the Coanda effect from engine thrust directed through slot gaps.

It was Boeing's entrant into the United States Air Force's Advanced Medium STOL Transport (AMST) competition, which aimed to replace the Lockheed C-130 Hercules as the USAF's standard STOL tactical transport.

Die Boeing YC-14 war ein vom US-amerikanischen Flugzeughersteller Boeing gebautes experimentelles Transportflugzeug der United States Air Force. Desc: The Boeing YC-14 is a twinjet short take-off and landing tactical military transport aircraft.It was Boeing's entrant into the United States Air Force's Advanced Medium STOL Transport competition, which aimed to replace the Lockheed C-130 Hercules as the USAF's standard STOL tactical transport. Unlike the Shin Meiwa LA and MA which were like the US-1 in design the Shin Meiwa MS and GS had its engines located in front of and above the wing like the USAF Boeing YC-14 to give STOL effect. The Boeing YC-14 was a twin-engine short take-off and landing (STOL) tactical transport.
Boeing and McDonnell Douglas won contracts to design and build the transport; the Boeing version was designated the YC-14 and the McDonnell Douglas, the YC-15. Keeping them supplied is gonna be hard. Das Testprogramm des Schulterdeckerswurde im Sommer 1977 beendet, zu einer Serienfertigung kam es n… Boeing’s YC-14 airlifter was built as the company’s entrant in the Force’s Advanced Medium Short Takeoff Landing [STOL] Transport (AMST) competition for the United States Air Force (USAF). Il Boeing YC-14 era un bimotore turboventola da trasporto tattico ad ala alta con caratteristiche STOL realizzato dall'azienda statunitense Boeing negli anni settanta.. Proposto come il McDonnell Douglas YC-15 nel programma AMST della USAF rimase, come il concorrente, allo stadio di prototipo per l'avvenuta cancellazione del programma. Es bezeichnet die Fähigkeit eines Flugzeugs, auf sehr kurzen Strecken starten und landen zu können.