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The greatest fighter pilot of WWI, Manfred von Richthofen, kept a few dogs. But his favorite seems to have been a huge Great Dane. The dogs name was Moritz and the Red Barron was quoted as having said of his four legged companion “The most beautiful... #fighterpilot
Leonardo da Vinci - Wikipedia, la enciclopedia libre
El tornillo aéreo (arriba), 1486, considerado el antecesor del helicóptero. (abajo) Experimento sobre la fuerza de sustentación de un ala.