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Orville Wright - No data on air propellers was...
No data on air propellers was available, but we had always understood that it was not a difficult matter to secure an efficiency of 50% with marine propellers. (Orville Wright)

No data on air propellers was available, but we had always understood that it was not a difficult matter to secure an efficiency of 50% with marine propellers.

Orville Wright

Related topics

air datum efficiency marine matter

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