The hard-working, multi-role Piasecki H-21 helicopter, known as the "Flying Banana," was the brainchild of Frank Piasecki, who founded the P-V Engineering Forum alongside his college buddy, Harold ...
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Piasecki H-21
It was nicknamed the Flying Banana, but the Piasecki H-21 was no joke. With its distinctive shape and tandem rotors, this helicopter played a key role in military operations from Korea to Vietnam.
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