MR. J. BURNELLI has lately produced a fresh example of the aerofoil‐fuselage type of monoplane for which he is well known and which he was probably the first to introduce, his example having been followed in recent Dyle et Bacalan and other European machines. Known as the “X‐3,” it is built as an exact one‐third scale model of a projected large three‐engined passenger monoplane, to have a 24‐ft. wide aerofoil‐fuselage, and be powered by three 650 h.p. engines. In the “X‐3” two 95‐h.p. American “Cirrus” engines are fitted. The wing is of the variable‐surface and camber type recently described, and capable of extension both front and rear to give a 25 per cent.
(1930), "A One‐Third Scale Model: Burnelli Tries Out in Miniature a Design for a Large Transport Monoplane with Variable Wings", Aircraft Engineering and Aerospace Technology, Vol. 2 No. 5, pp. 114-114. https://doi.org/10.1108/eb029266
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