Question: What engine was used in the aircraft intended to replace the F4F Wildcat?
Sentence (from "Republic P-47 Thunderbolt"): The P-47 was designed around the powerful Pratt & Whitney R-2800 Double Wasp engine which was also used by two U.S. Navy fighters, the Grumman F6F Hellcat and the Vought F4U Corsair.
Relevant evidence: Yes