Only one Boeing XB-15 bomber prototype was built, yet it provided the giant aircraft manufacturer with design ideas that shaped the famous B-17 and Model 314 Clipper airplanes.
Source: general aviationThe one and only Boeing XB-15
Only one Boeing XB-15 bomber prototype was built, yet it provided the giant aircraft manufacturer with design ideas that shaped the famous B-17 and Model 314 Clipper airplanes.
Source: general aviationThe one and only Boeing XB-15