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List of X-planes
The
X-planes
are a series of experimental
United States
airplanes
and
helicopters
(and some
rockets
) used to test and evaluate new technologies and aerodynamic concepts. Most of the X-planes have been operated by the
National Advisory Committee for Aeronautics
(NACA) or, later, the
National Aeronautics and Space Administration
(NASA), often in conjunction with the
United States Air Force
. The majority of X-plane testing has occurred at
Edwards Air Force Base
.
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