Sikorsky XPBS-1
Technical Information

Background
Built by Sikorsky during 1937 as the first prototype for a new patrol bomber in response to a U.S. Navy (USN) Bureau of Aeronautics 1935 requirement for a large long-range armed patrol aircraft. In June 1936, the model S-44 proposal issued by Sikorsky was awarded a contract for the production of a single prototype. The three production flying planes were designated VS-44 and nicknamed Excalibur, Excambian, and Exeter.

Prototype
The prototype, XPBS-1 9995 made a first flight on October 15, 1937.

Production
A single prototype was built.

Technical Details XPBS-1
Crew  4-5
Engine  4 × Pratt & Whitney R-1830-S1C3-G 14-cylinder two-row air-cooled radial piston engines, 1,200 hp each with 3 bladed propellers
Wingspan  124' / 37.8m
Length  79' 3" / 24.16m
Maximum Speed  210 mph
Range 3,598 miles