Dunne Tailless Aeroplane

In the early years of the 20th century British army officer Lieutenant John William Dunne developed a theoretical interest in aircraft stability, which led him to design the first practical tailless aeroplane.
His machines achieved stability through the shaping of their wings. These were sharply swept hack and incorporated “washout” a change, from root to tip. of the angle at which the wings met the airflow. After experimenting with gliders. Dunne produced his first powered tailless machine, the D.4 biplane, in 1908, while working at the army’s Balloon Factory at Farnborough.
When the War Office withdrew its support, Dunne continued under the aegis of the Blair Atholl Syndicate, set up with friends. His next machine, the D.5 of 1910, was his first practical aircraft and flew well until wrecked in 1911. Its remains were incorporated in the D.8. With ailerons on all four wingtips. this proved to be Dunne’s most successful machine, flying from England to France in 1913. Dunne had always pursued the goal of total stability in flight. His achievement in this was memorably demonstrated by a French pilot
who walked out on the wing of the D.8. leaving the aeroplane to fly itself.

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