| Antarctic Snow Cruiser | |
| Manufacturer: | Armour Institute of Technology |
| Aka: | The Penguin, Penguin 1, Turtle |
| Production: | 1937–1939 |
| Assembly: | United States: Chicago, Illinois |
| Factory: | Pullman Company |
| Designer: | Thomas Poulter |
| Class: | Class 9 |
| Layout: | Longitudinal front-engine, four-wheel drive |
| Engine: | Two 672cuin Cummins H-6 diesel engines |
| Powerout: | 112abbr=onNaNabbr=on each |
| Motor: | Four 56kW electric motors |
| Wheelbase: | NaNinches |
| Length: | 669inches |
| Width: | 239inches |
| Height: | Wheels extended: 192inches Wheels retracted: 144inches |
| Weight: | 75000lb |
| Sp: | us |
The Antarctic Snow Cruiser was a vehicle designed (1937–39) under the direction of Thomas Poulter, intended to facilitate transport in Antarctica during the United States Antarctic Service Expedition (1939–41).[1] The Snow Cruiser was also known as "The Penguin," "Penguin 1" or "Turtle"[2] in some published material.
Poulter had been second in command of Byrd's Second Antarctic Expedition, launched in 1934. From his time in the Antarctic, Poulter had devised several innovative features. The massive Snow Cruiser generally failed to operate as hoped under the difficult conditions (the tires, notably smooth to avoid becoming snow encrusted, did not grip the ice) and was eventually abandoned in Antarctica. Rediscovered under a deep layer of snow in 1958, it later disappeared again due to shifting ice conditions. Its whereabouts have been unknown since then.
On April 29, 1939, Poulter and The Research Foundation of the Armour Institute of Technology showed the plans to officials in Washington, D.C. The foundation would finance the Antarctic Snow cruiser with an estimate of $150,000[3] and oversee the construction, and lend the vehicle to the United States Antarctic Service. Work began on August 8, 1939, and lasted for 11 weeks. On October 24, 1939, the vehicle was fired up for the first time at the Pullman Company just south of Chicago and began the 1640km (1,020miles) journey to the Boston Army Wharf. During the trip, a damaged steering system caused the vehicle to drive off a small bridge on the Lincoln Highway and into a stream near the town of Gomer in Ohio, where it remained for three days. When the cruiser entered Boston, it caused one of the biggest traffic jams at the time.[4] It soon after departed for Antarctica on November 15, 1939, aboard the USCGC North Star.
The Snow Cruiser arrived at Little America in the Bay of Whales, Antarctica with United States Antarctic Service Expedition in early January 1940 and experienced many problems. It was necessary to construct a ramp from timber to unload the vehicle. As the vehicle was unloaded from the ship, one of the wheels broke through the ramp. The crew cheered when Poulter powered the vehicle free from the ramp but the cheers fell silent when the vehicle failed to move through the snow and ice. The large, smooth, treadless tires were originally designed for a large swamp vehicle; they spun freely and provided very little forward movement, sinking as much as 3feet into the snow. The crew attached the two spare tires to the front wheels of the vehicle and installed chains on the rear wheels, but were unable to overcome the lack of traction. The crew later found that the tires produced more traction when driven backwards. The longest trek was 92miles – driven completely in reverse. On January 24, 1940, Poulter returned to the United States, leaving Dr. Franklin Alton Wade in charge of a partial crew, which included Theodore Argyres Petras, the pilot of the Snow Cruiser's plane, US Navy sergeant Felix L. Ferranto, the radio operator, and C. W. Griffith, the diesel mechanic of the vehicle. The crew conducted seismologic experiments, cosmic-ray measurements, and ice core sampling while living in the snow- and timber-covered Snow Cruiser. Funding for the project was canceled as the focus in the United States became World War II.
During Operation Highjump in late 1946, an expedition team found the vehicle and discovered it needed only air in the tires and some servicing to make it operational.
In 1958, an international expedition uncovered the snow cruiser at Little America III using a bulldozer.[5] It was covered by 23feet of snow and a long bamboo pole marked its position. They were able to excavate to the bottom of the wheels and accurately measure the amount of snowfall since it was abandoned. Inside, the vehicle was exactly as the crew had left it, with papers, magazines, and cigarettes scattered all around.
Later expeditions reported no trace of the vehicle. Although there was some unsubstantiated speculation that the (traction-less) Snow Cruiser was taken by the Soviet Union during the Cold War, the vehicle most likely is either at the bottom of the Southern Ocean or buried deep under snow and ice. Antarctic ice is in constant motion and the ice shelf is constantly moving out to sea. In 1963, a large chunk of the Ross Ice Shelf broke off and drifted away; the break occurred right through Little America.[6] It is not known on which side of the ice shelf the Snow Cruiser was located.
The cruiser was able to carry a biplane, which could land and take off on ice.[7] [8] [9] [10] The interior of the cruiser was laid out as a mobile habitat able to support a team of explorers for an extended trip.
Major features included:
| Attribute | Description | |
|---|---|---|
| Length | 17abbr=offNaNabbr=off | |
| Width | 6.06m (19.88feet) | |
| Height | Wheels retracted: 3.7m (12.1feet) Wheels extended: 4.9m (16.1feet) | |
| Weight (loaded) | 75000lb | |
| Range | 5000miles | |
| Maximum Speed | 30mph | |
| Self-Sufficiency | 1 year under the most extreme conditions | |
| Fuel Capacity | 2500gal stored under the floor | |
| Additional Fuel Capacity | 1000gal stored on the roof, to be used by the plane | |
| Crew Size | 5 people | |
| Estimated Cost | $300,000 ($ million today) | |
| Cabin Compartments | control cabin, machine shop, combination kitchen/darkroom, fuel storage, food storage, two spare tires |
| Attribute | Description | |
|---|---|---|
| Configuration | Diesel-Electric Hybrid (2 diesel engines, 2 generators, 4 electric motors) | |
| Diesel Engine Manufacturer and Model | Cummins H-6 engine | |
| Diesel Engine Power Rating | 150hp @ 1800 rpm – 300hp total combined power for 2 engines | |
| Diesel Engine Configuration | 6-cylinder inline; naturally aspirated | |
| Diesel Engine Displacement | 672cuin | |
| Diesel Engine Bore and Stroke | NaNinches bore x 6inches stroke | |
| Electric Generators | General Electric | |
| Electric Drive Motor Manufacturer | General Electric | |
| Electric Drive Motor Power Rating | 75hp – 300hp total combined power for 4 motors | |
| Tire Manufacturer | Goodyear Tire and Rubber Company | |
| Tire Dimensions | 120inches outer diameter x 66inches inner diameter x 33.5inches width |