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Описание
Страна: Дания
Год: 1912
Вертолет
A.Andrews. The Flying Machine: Its Evolution through the Ages (Putnam)
In 1912 J. C. H. Ellehammer also raised himself a few inches off the ground, using the system of cyclic pitch control, which was further developed in the years after World War I by the Argentinian Marquis de P. Pescara in machines built in Europe.
- A.Andrews. The Flying Machine: Its Evolution through the Ages (Putnam)
Фотографии
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A.Andrews - The Flying Maschine: Its Evolution through the Ages /Putnam/
J C H Ellehammer, the often under-rated Danish pioneer, with his helicopter in 1912. The craft lifted from the ground but failed to fly.