Experimental aircraft

thumb|A Bell 47 helicopter, an early example of a powered rotorcraft

aircraft intended to develop aircraft design and technology

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1910s aircraft model by Caproni

aircraft model by Caproni

aeroplane, helicopter or other kind of aircraft (specially designed or modified from serial production aircraft) intended for flight research or testing the aircraft concepts or on-board equipment

thumb|right|200px|An exhibit of ALFLEX at the Kakuda Space Center

1910s proposed Italian aircraft

1910s single-engine monoplane by Caproni

military aircraft