What critical element did Otto Lilienthal fatally lack in his gliding experiments?

Answer

A mechanism to recover from a stall

Otto Lilienthal's dedication to gliding ended tragically because he lacked a mechanism to recover from a stall, ultimately leading to his death in a crash in 1896.

What critical element did Otto Lilienthal fatally lack in his gliding experiments?

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How the Wright Brothers Solved the Problem of Flight - - YouTube

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