List of aircraft produced by a number of countries to test new concepts and technology
A group of 1950s NACA research aircraft
As used here, an experimental or research and development aircraft, sometimes also called an X-plane, is one which is designed or substantially adapted to investigate novel flight technologies.[1][2][3]
Avro 707 research aircraft in formation with Avro Vulcan bomber prototypesFairey Delta 2 research aircraftGloster E.28/39 jet engine research aircraftMiles M.35 Libellula canard research aircraft