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Curtiss BF2C Goshawk
:''For other uses of Goshawk, see Goshawk (disambiguation)''
The Curtiss BF2C Goshawk (Model 67) was a United States 1930s naval biplane aircraft that saw limited success but was part of a long line of Hawk Series airplanes made by the Curtiss Aeroplane and Motor Company for the American military, and for export as the Model 68 Hawk III.
==Design and development==
The United States Navy and Curtiss felt the F11C-2 possessed development potential. The Navy decided to procure a variant with retractable landing gear. This variant, which still had the F11C-2's classic "Hawk" wood wing with its flat-bottomed Clark Y airfoil, was designated XF11C-3 by the Navy and Model 67 by Curtiss. The main gear retraction system was inspired by the Grover Loening-designed system on the Grumman XFF-1 prototype, and was manually operated.
The XF11C-3 was delivered to the USN in May 1933, with a Wright R-1820-80 radial engine rated at . Trials revealed a increase in speed over the F11C-2, but the extra weight caused a decrease in maneuverability. The Navy felt the handling degradation was more than offset by the increase in speed. During testing the XF11C-3 had its wood wing replaced by the metal-structured, biconvex, NACA 2212 airfoil wing used in production and soon after was redesignated XBF2C-1 (Model 67A) in keeping with the new Bomber-Fighter category.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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