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X-55 ACCA
Lockheed Martin Skunk Works · Experimental · USA · Modern (1992–2009)
The Lockheed Martin X-55 Advanced Composite Cargo Aircraft (ACCA) is an experimental twinjet transport aircraft. It is intended to demonstrate new air cargo-carrier capabilities using advanced composite materials. A project of the United States Air Force's Air Force Research Laboratory, it was built by the international aerospace company Lockheed Martin, at its Advanced Development Programs facility in Palmdale, California.