High Quality Content by WIKIPEDIA articles! Designed by Louis Bleriot and Raymond Saulnier (of Morane-Saulnier), the Bleriot XI was a light and sleek monoplane constructed of oak and poplar. The flying surfaces were covered with cloth. The original XI was designed and built in 1908 and made its public debut at a Paris airshow in December of that year. The aircraft's original configuration included a R.E.P. engine spinning a four blade metal paddle type propeller which proved to be unsatisfactory. In the Spring of 1909 Bleriot decided to use a basically simple 25 horsepower (19 kW) Anzani 3 cylinder W-configuration engine (a central vertical cylinder with the other two at 60° on either side and in the same plane) and a two blade Chauviere wooden propeller with much better results. Bleriot could be assured of the Anzani 3W engine running continuously for an hour. The Bleriot XI also had some ground-breaking technologies such as castering landing gear, allowing for crosswind landings. Wing warping (instead of ailerons) controlled the plane's roll.

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