• Short Summary

    LONG BEACH, Calif., Aug. 5, 1975 -- McDonnell Douglas today unveiled the United States Air Force's first YC-15 AMST (Advanced Medium STOL Transport) prototype in a colorful rollout ceremony here.

  • Description

    LONG BEACH, Calif., Aug. 5, 1975 -- McDonnell Douglas today unveiled the United States Air Force's first YC-15 AMST (Advanced Medium STOL Transport) prototype in a colorful rollout ceremony here.

    To the music of skirling bagpipes, the new high-wing, four-engine jet moved onto the flight ramp at the Douglas Aircraft Company division of McDonnell Douglas for inspection by government, defense, industry, labour, civic and airline representatives.

    An advanced technology aircraft, the YC-15 will be the first jet transport to fly with a supercritical wing and with an externally blown flap (EBF) powered lift system. The prototype program is intended to provide the Air Force with an evaluation of this new technology, which offers advantages of jet speed, greater cargo capacity and improve STOL (Short Takeoff and Landing) capabilities for tactical transport operations.

    Principals in the rollout ceremony were John L. McLucas, secretary of the Air Force; Congressman Mark W. Hannaford of the 34th District in which Long Beach is located; Lt. Gen. James T. Stewart, USAF, commander of the Air Force System Command's Aeronautical System Division, Wright-Patterson Air Force Base; Leonard Woodcock, international president of the United Automobile and Aircraft Workers; Sanford N. McDonnell, president of McDonell Douglas; and John C. Brizendine, president of Douglas.

    Other introduced by Brizendine included Congressman Glenn M. Anderson of the 32nd Disrick (Calif); General P.K. Carleton, USAF, commander of the Air Force Military Airlift Command; Lt. Col. David Englurd, Air Force system program director for AMST, and Marvin D. Marks, vice president-AMST program manager for McDonnell Douglas.

    After an address by Secretary McLucas, he, General Stewart, McDonnel and Brizendine gave the signal for the YC-15 public debut by advancing four aircraft throttles mounted on a pedestal on the dais.

    The transport, painted gray and white with a blue stripe extending the length of the wide fuselage, then moved along the flight ramp, turned and pulled to a stop in front of the assembled guests.

    Kilted bagpipers paraded ahead of the aircraft until they arrived at the dais where they played "Highland Laddie," the traditional salute to the clan chiefs in recognition of the Scottish ancestry of "McDonnell" and "Douglas."
    While the YC-15 was moving into position, Marks described its advanced features. Once the aircraft stopped, a large ramp door in the aft end was lowered.

    Then, led by Secretary McLucas, the guests walked up the ramp to inspect the cabin interior and the cockpit. The audience also was invited to tour the nearby Douglas X-shop, where a second YC-15 prototype is nearing completion as part of an Air Force competition.

    The X-shop is a special area set aside exclusively for the building of the two aircraft, authorized by the Air Force in 1972 with the award of a contract to Mc Donnell Dougla for $100,319,310. The program is directed by the AMST System Program Office in the Air Force System Command's Aeronautical System Division.

    Among the innovative design features in the YC-15 are the Supercritical wing, which is straight, thick and designed for low drag during cruise, and the EBF powered lift system which generates about twice the lift of a conventional transport.

    In the EBF system, large titanium flaps are lowered into the exhaust from the turbofan engines. The exhaust stream either impacts the flaps and is deflected downward or passes through the wide spaces (slots) between the flaps and travels downward, creating light.

    Purpose of the high-lift STOL system is to permit the YC-15 take off and land in 200-foot (609.6 m) distances on rough fields and to decelerate to speeds as low as 85 Knots (97.8 m.p.h. ) (157.5 km/hr) during approaches and steep descents.

    Dimensions of the YC-15 are 124 feet 3 inches (37.8 m) in length 43 feet 4 inches (13.2 m) in height and 110 feet 4 inches (33.6 m) wingspan.

    Maximum gross takeoff weight is 216, 680 pounds (98,286 kg), and design landing weight is 150,000 (68,040 kg).

    The AMST fuselage, containing 67 per cent more cargo space than the Air Force's largest medium transport, will house the Army's standard self-propelled artillery, the latest air defense vehicles and construction equipment. In addition, it will carry 40 troops, simultaneously with six pallets of cargo.

    Wing-mounted engines are reliable Pratt & Whiteney Aircragt JT8D-17 fanjets, latest model of the engine which powers the Mc Donnell Douglas DC-9 jetlinder, the B-727 and B-737. The engines, each rated, 16,000 pounds (7257.6 kg) of thrust at takeoff will propel the aircraft at speeds of 500 m.p.h ?(804.5 km/hr) and over ferry distances of approximately 3000 statute miles (4827 km.).

    Maiden flight of the YC-15, planned for later this year, will kick off a year-long joint government-McDonnell Douglas flight test program at Edwardds Air Force Base, California, with both the Air Force and the National Aeronautics and Space Administration participating.

    In addition to testing the advanced STOL technology and demonstrating the potential operational utility of an AMST transport, the prototype program is designed to reduce the technical risks and cost associated with eventual modernization of the USAF medium transport force which currently consists of C-130, C-123 and C-7 aircraft.

    The YC-15 is the result of 15 years of MCSonnell Douglas research and development in the STOL field. Douglas has built a long line of military transports, latest of which are the C-9A "flying hospital ward" for the Air Force and the C-9B logistical support transport for the U.S. Navy and U.S. Marines.

  • Tags

  • Data

    Film ID:
    VLVA4SYBT2CHC7MCZ2IRR6ZDOFRQJ
    Media URN:
    VLVA4SYBT2CHC7MCZ2IRR6ZDOFRQJ
    Group:
    Reuters - Source to be Verified
    Archive:
    Reuters
    Issue Date:
    05/08/1975
    Sound:
    Unknown
    HD Format:
    Available on request
    Stock:
    Colour
    Duration:
    00:02:39:00
    Time in/Out:
    /
    Canister:
    N/A

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