The Boeing Y1B-20 (Boeing 316) was designed as an improvement on the
Boeing XB-15 (''Y1-'' indicates a funding source outside normal fiscal year procurement.) It was slightly larger than its predecessor, and was intended to use much more powerful engines. It was presented to the Army in early
1938
Events
January
* January 1
** The Constitution of Estonia#Third Constitution (de facto 1938–1940, de jure 1938–1992), new constitution of Estonia enters into force, which many consider to be the ending of the Era of Silence and the a ...
, and two orders were placed soon after. The order was reversed before construction began.
Despite their cancellation, the XB-15 and Y1B-20 laid the groundwork for the
Boeing B-29 Superfortress
The Boeing B-29 Superfortress is an American four-engined propeller-driven heavy bomber, designed by Boeing and flown primarily by the United States during World War II and the Korean War. Named in allusion to its predecessor, the B-17 Fl ...
.
Specifications (as designed)
See also
References
External links
Encyclopedia of American AircraftUSAF Museum description of Y1B-20
{{USAF bomber aircraft
B-20, Boeing
Four-engined tractor aircraft
Cancelled military aircraft projects of the United States
Mid-wing aircraft
Four-engined piston aircraft