Quote:
Originally Posted by freebeard
This picture doesn't show it well, but the variable flow oil cooler is modulated by the scoop extending and retracting in the air flow. Compare with the Mustang that has the same added drag whether the cooler is open or closed.
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Many books claim that the Mustang radiator achieved actual thrust. Inspired by this, the builders of the Voyager world-circling aircraft wrote their own manual and got their cooling drag down to 20%.