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[Airplane Mechanism] What are controllable pitch and contra-rotating propellers?
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America Copied Germany’s Jerry Can — But Missed The One Genius Detail that Made All the Difference
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Pariser Luftfahrtschau 1973:DIE SCHANDE DER SOWJETISCHEN LUFTFAHRT! Die Tu-144 zerbricht über Paris
41:30
Even enthusiasts don't know this: The fate of an airplane is determined by engine placement
40:31