The Convair Model 37 was a large passenger aircraft planned, but never built, by Convair. It was to be a civilian airliner version of the Convair XC-99 transport plane, and thus eventually derived from the giant B-36 bomber. The Consolidated Vultee Aircraft Corporation, universally known as Convair, was the result of a 1943 merger between Consolidated Aircraft and Vultee Aircraft, resulting in a leading aircraft manufacturer of the United States. ... The sole XC-99 in its early days of operation, before a nose radome was fitted. ... The Convair (Consolidated Vultee) B-36 was a strategic bomber operated by the United States Air Force, the first to have truly intercontinental range. ...

The Model 37 was to be of similar proportions to the XC-99; 182 ft 6" in length, 230 ft wingspan, and a high-capacity, double-deck fuselage. The projected passenger load was to be 204, and the effective range 4,200 miles.

Fifteen aircraft were ordered by Pan Am for transatlantic service. Pan American World Airways (Pan Am) was the United States principal international airline from the 1930s until its collapse in 1991, and was credited with many innovations that shaped the international airline industry. ...

Unfortunately for the project, the fuel and oil consumption of the six 3,500 hp Pratt & Whitney Wasp Major radials powering the XC-99 and B-36 meant that the design was not economically viable, and hoped-for turboprop powerplants did not materialise fast enough. Fifteen orders were not sufficient for production, and the project was abandoned.
This article is about the U.S. company Pratt & Whitney. ... Pratt & Whitney Wasp Major (sectioned) The Pratt & Whitney R-4360 Wasp Major was a large radial piston aircraft engine designed and built during World War II. It was the last of the Wasp family and the culmination of its makers piston engine technology, but the war was over before... A schematic diagram showing the operation of a turboprop engine. ...