The Wind Tunnel That Helped Win World War II

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In 1929, the National Advisory Committee for Aeronautics, an organization that would become NASA Langley Research Center, began construction on a massive and unique facility: the Full-Scale Tunnel. Housed in a huge building in Virginia, the nation's first wind tunnel for testing full-size airplanes had a 30-foot by 60-foot maw through which two fans powered by 4,000-horsepower motors blew air at speeds of up to 120 miles an hour. Airplanes would be suspended in the path of the artificial wind. Transducers could convert the energy of the air hitting the plane into measurements for drag and lift.

Though engineers completed the tunnel in 1934, its finest hour was probably during World War II, when it operated virtually non-stop. Langley's historians note the importance of the tunnel:

Both the Navy and the Army quickly sent a steady stream of military aircraft to Langley for "drag cleanup tests." In the next 18 months, 18 different aircraft were tested and improved in the FST. The FST operated around the clock, seven days a week, during WWII conducting not only drag cleanup tests, but engine cooling methods, stability and control, and unexpected operational problems. Early versions of virtually every high-performance fighter aircraft were evaluated in the FST, allowing for countless design improvements that gave American pilots a critical edge in combat.

Designated a historical landmark in 1985, the tunnel remained in operation through 2009 doing various types of tests. Sadly, the demolition of the tunnel began in 2010. Below, you can take a tour of the facility as preserved in the Library of Congress' Built in America collection.

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Alexis C. Madrigal

Alexis Madrigal is a senior editor at The Atlantic, where he oversees the Technology Channel. He's the author of Powering the Dream: The History and Promise of Green Technology. More

The New York Observer calls Madrigal "for all intents and purposes, the perfect modern reporter." He co-founded Longshot magazine, a high-speed media experiment that garnered attention from The New York Times, The Wall Street Journal, and the BBC. While at Wired.com, he built Wired Science into one of the most popular blogs in the world. The site was nominated for best magazine blog by the MPA and best science Web site in the 2009 Webby Awards. He also co-founded Haiti ReWired, a groundbreaking community dedicated to the discussion of technology, infrastructure, and the future of Haiti.

He's spoken at Stanford, CalTech, Berkeley, SXSW, E3, and the National Renewable Energy Laboratory, and his writing was anthologized in Best Technology Writing 2010 (Yale University Press).

Madrigal is a visiting scholar at the University of California at Berkeley's Office for the History of Science and Technology. Born in Mexico City, he grew up in the exurbs north of Portland, Oregon, and now lives in Oakland.

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