Although Leonardo Da Vinci was well-known as a painter, sketches he made in the 15th century were a precursor to the invention of which aircraft?
Answer Helicopter
Leonardo da Vinci's 15th century "Helical Air Screw" bore a strong resemblance in construction and proposed operation to modern helicopters.
Asked by Kiera Hart · Last updated 5 years ago · 361.9K views
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