We think of drone aircraft as a modern technology, yet it has its beginnings in World War II with military drones used to test aircraft and rocket telemetry. However, the drones of yesteryear were vastly different than the drones of today. Chief among those differences were the propulsion systems used, as evidenced by this Franklin...
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Just Listed: Franklin 0-805 Air-Cooled Flat-Twelve Engine appeared first on
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