First aerial circumnavigation

The first circumnavigation of the world by air was conducted in 1924 by a team of aviators of the Army Air Service, the precursor of the United States Air Force.The trip took 175 days, covering about 44,000 kilometres (27,000 miles).

Though not an organized race, in the early 1920s several countries were vying to be the first to get an airplane around the world. In the spring of 1923, the U.S. Army Air Service became interested in having a squadron of military planes make a round-the-world flight. It assigned a group of officers the job of finding a suitable aircraft and planning the mission. The group first looked at the existing pool of military planes but none of them was satisfactory, so they began looking outside of the air service for a plane that could be fitted with interchangeable wheeled landing gear and also with pontoons for landing on water. The War Department instructed the Air Service to look at both the Fokker F-5 Transport and the Davis-Douglas Cloudster to see if either one would qualify and to acquire one of these planes for a test.

When Donald Douglas was asked for information on the Cloudster, he instead submitted data on a modified DT-2, the torpedo bomber that Douglas had built for the U.S. Navy in 1921 and 1922. This plane had already proved to be a sturdy aircraft that could accommodate interchangeable wheeled and pontoon landing gear. Since the basic plane already existed, Douglas stated that the new fleet of planes, which he named the Douglas World Cruiser, could be delivered within 45 days after a contract was awarded. The Air Service agreed and sent Lieutenant Erik Nelson, a member of the planning group, to California to work out the details with Douglas.

Douglas, assisted by John Northrop, began to modify a DT-2 to suit the Air Service requirements. The main modification involved its fuel capacity. All the internal bomb-carrying structures were removed and additional fuel tanks were added to various parts of the plane. The total fuel capacity went from 115 gallons (435 liters) to 644 gallons (2,438 liters).

Lieutenant Nelson took Douglas' proposal to Washington where Major General Mason M. Patrick, Chief of the Air Service, approved it on August 1, 1923. The War Department awarded the contract to Douglas for the construction of a single test plane. The test plane met all its specifications, and a contract was awarded for four more planes and spare parts. The last plane was delivered on March 11, 1924. The spare parts included 15 extra Liberty engines, 14 extra sets of pontoons, and enough replacement airframe parts for two more planes. These were sent around the world along the route the crews would follow.

The trip

Four planes—named the "Seattle", "Chicago", "Boston", and "New Orleans"—left Santa Monica, California, on March 17, 1924, for Seattle, Washington—the official start of the flight. On April 6, they left Seattle for Alaska. One plane—the "Seattle"—needed repairs and remained behind. When it was repaired the crew attempted to catch up with the other three planes, but on April 30, "Seattle" crashed in dense fog on a mountainside near Port Moller on the Alaska Peninsula. The crew survived and were picked up on May 10, but the plane was destroyed.

The three remaining planes continued on their voyage. Avoiding the Soviet Union, which had not given permission for the planes to cross, they crossed Japan, Korea, the coast of China, Hong Kong, French Indochina, Thailand, Burma, and India, and proceeded into the Middle East and then Europe. They arrived in Paris on July 14—Bastille Day. They went from Paris to London and then the north of England to prepare for their Atlantic Ocean crossing. Along the way, they changed from pontoons to wheeled landing gear back to pontoons.

On 3 August while flying across the Atlantic, the "Boston" was forced to come down, and capsized while being towed by the cruiser that had picked up the crew. The two remaining planes crossed the Atlantic via Iceland and Greenland and reached Canada. The original test plane—now named the "Boston II"—met them in Canada and the three planes went on to Washington, D.C. After a hero's welcome, the three planes flew to the West Coast, stopping briefly in Santa Monica and finally landing in Seattle on September 28, 1924.

The trip had taken 175 days. Sources differ on whether they flew almost 29,000 miles (46,671 kilometers) or 26,553 miles (42,733 kilometers). The Douglas Aircraft Company adopted the motto, "First Around the World – First the World Around". The other national efforts had all failed. The American team had greatly increased their chances of success by using several planes and prepositioning support along the route.

Aircraft and crew

* "Seattle", Maj. Frederick Martin (pilot and flight commander) and SSgt. Alva Harvey (flight mechanic);
* "Chicago", Lt. Lowell Smith (pilot) and 1st Lt. Leslie Arnold;
* "Boston", 1st Lt. Leigh P. Wade (pilot) and SSgt. Henry H. Ogden;
* "New Orleans", Lt. Erik Nelson (pilot) and Lt. Jack Harding.

The "Chicago" was restored in 1971–1974 and moved into the new National Air and Space Museum building in 1976. The "New Orleans" is owned by Los Angeles County and on loan to the Museum of Flying in Santa Monica, California. The wreckage of the "Seattle" is on display at the Alaska Aviation Heritage Museum.

Major Martin was in command of Army aviation units in Hawaii at the time of the Japanese attack of December 7, 1941. His mechanic Alva Harvey was commissioned and commanded heavy bomb groups during the Second World War. Lt. Nelson rose to the rank of colonel and became one of General Henry Arnold's chief trouble-shooters on the development and employment of the B-29 Superfortress.

ee also

* Baron F. M. Koenig Warthausen

External links

* [http://www.centennialofflight.gov/essay/Aerospace/Douglas_World_Trip/Aero27.htm The Douglas World Cruiser - Around the World in 175 Days]
* [http://www.wpafb.af.mil/museum/history/dwc/dwc.htm USAF Museum: World Flight Chronicle] , day by day account
* [http://www.didyouknow.cd/aroundtheworld/flight.htm didyouknow.cd: Around the world]
* [http://www.aviation-central.com/famous/ab1d0.htm aviation-central.com: Douglas DT-2 World Cruiser]
* [http://www.museumofflying.com/ Santa Monica Museum of Flying]