Douglas World Cruiser "Chicago"

The first aerial circumnavigation of the world was conducted in 1924 by a team of aviators of the United States Army Air Service, the precursor of the United States Air Force. The trip took 175 days, covering over 27,553 miles.

When the head of Davis-Douglas, Donald Douglas, was asked for information on the Davis-Douglas Cloudster, he instead submitted data on a modified DT-2, a torpedo bomber that Douglas had built for the U.S. Navy in 1921 and 1922. The DT-2 had proven to be a sturdy aircraft that could accommodate interchangeable wheeled and pontoon landing gear. Since the aircraft was an existing model, Douglas stated that a new aircraft, which he named the Douglas World Cruiser (DWC), could be delivered within 45 days after a contract was awarded. The Air Service agreed.

Douglas, assisted by Jack Northrop, began to modify a DT-2 to suit the circumnavigation requirements. The main modification involved its fuel capacity. All the internal bomb carrying structures were removed with additional fuel tanks added to the wings and fuselage fuel tanks enlarged in the aircraft. The total fuel capacity went from 115 gallons to 644 gallons.

First Flight: November 1923

Smithsonian Air & Space Museum, Nov 2016
Photo 452