Boeing Y1B-20

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Boeing Y1B-20
Role Heavy bomber
Manufacturer Boeing
First flight n/a
Status Cancelled
Primary user United States Army Air Forces
Number built 0
Developed from Boeing XB-15

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, 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.[1]

Specifications (as designed)[edit]

General characteristics

Performance

Armament

  • Guns:
    • 3× .30 in (7.62 mm) machine guns
    • 4× .50 in (12.7 mm) machine guns
  • Bombs: 17,600 lb (6,620 kg)

See also[edit]

Related development
Aircraft of comparable role, configuration and era
Related lists

References[edit]

  1. ^ Kohn, Leo. "Boeing XB-15 Super Flying Fortress: U.S. Heavy Bomber". In Ray Merriam. U. S. Warplanes of World War II. World War II Journal 69. Merriam Press. pp. 43–44. ISBN 1-57638-167-6.