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invented the magning glass,improved gunpowder, making it more effective for rockets, and also proposed early concepts for ornithopters and lighter-than-air craft.
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Otto Lilienthal's primary contribution to flight was the development and testing of gliders.
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a number of aircraft, including the "twin-planeit" made him the first Canadian to design, build, and fly an airplane, pioneering Canadian aviation.
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first pilot to break the sound barrier in it
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a machine that prevented water backflow in cellar to help with flooding.
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groundbreaking delta wing design which significantly impacted super sonic fligh