Tolong jelaskan mengenai Pautan luar dari Grumman F6F Hellcat dalam bahasa melayu

How Leroy Grumman and Jake Swirbul built a high-flying company from the ground up

Final flight test report of F6F-3, USN Air Station, Patuxent River (pdf file)

F6F Hellcat Performance Trials, Aircraft and Armament Experimental Establishment (A&AEE), Boscombe Down

Performance test, each 1,00th aircraft; F6F-5 No 58310, USN Air Station, Patuxent River (pdf file)

USN & USMC Aircraft Serial and Bureau Nos. 1911 to present

"How The Hellcat Got That Way" , December 1943, Popular Science World War Two article which is large and surprisingly detailed