Design of this type was started under the Consolidated designation Model 39. It was produced by Consolidated Vultee under the trade name Convair.
Note the following text accompanying the photo is referring to the
civil variant, the aircraft in the photo is showing the US Navy
"First flight pictures of Consolidated Vultee's new Liberator
Liner (Company Model 39) stress the unusual lines and clean design
of this post-war luxury airliner. Featuring the wing, powerplant,
and landing gear of the Liberator bomber, the new ship is designed
to carry 48 passengers under daylight conditions. A sleeper version
will carry 24 passengers. The ship has a gross weight of 56,000 lb
(25,401 kg), wing spread of 110 ft (33.53 m), and is 90 ft (27.43 m)
from nose to tail. The fuselage is 10 ft 6 in (3.20 m) in diameter
and its four Pratt & Whitney engines develop 1,100 hp each."
View also photo 2328 and the History Brief .