Boeing YP-29 34-23

Boeing YP-29 34-23 (Boeing Model 264). The YP-29 is seen here fitted with an experimental variable-pitch propeller. The aircraft was later delivered to NACA (National Advisory Committee for Aeronautics) at Langley Field in Virginia. The YP-29 was similar to the earlier XP-940 (Wright Field experimental designation), but with a roomy enclosed cockpit, following the lineage of the P-26, through the Model248-XP-936, Model 266-P-26 and XP-940. Boeing also developed a ship-borne version as the XF7B-1-Model 273

Advisory Cockpit Delivered Designation Developed Earlier Enclosed Experimental Fitted Langley Lineage Naca Propeller Roomy Similar

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