Per “The Aviation Zone”: “In the early-1970s, five American companies submitted proposals to the U.S. Air Force after it issued its Advanced Medium STOL Transport (AMST) requirement for a new jet-powered tactical airlifter to replace the venerable Lockheed C-130 Hercules. In 1972, two proposals were accepted for construction as the Boeing YC-14 and McDonnell Douglas YC-15 prototypes.
Both test aircraft were designed to a common cargo specification and utilized off-the-shelf engines to achieve the "Coanda Effect" (air turning on the convex side of an aerodynamic surface) to maximize lifting capability during STOL (Short Takeoff and Landing) operations.…”
Two YC-15s (#72-1875 and #72-1876) were built with two different size wingspans, 132 feet (40.42m) and 110 feet (33.6m), respectively. Both aircraft are 124 feet (37.86m) in length.
First flown on 26 August 1975, a 600-hour test program followed. Funding cuts eventually cancelled the AMST program in 1979. Both the YC-14 and the YC-15 satisfied the AMST performance requirements, which would later be incorporated into the design of the larger C-17 Globemaster III transport.”
Click here to download photos in Zip file
Other YC-15 blogs here
Proposed C-15B blog here
1 comments:
A shame they didn't put the YC-14 into service. We'd have had a US-designed and built A400 decades earlier.
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