Driven by a six-blade mahogany fan (see top picture) with a diameter of 9.1m, the tunnel was used to test full-sized aircraft prototypes like the Spitfire.

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Demong and the team then traveled to Australia to test the design in a tunnel against a 65-mile per hour gusts.

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Brickyard Crossing, which used to host a Senior PGA event, is truly one-of-a-kind: four holes play inside the infield of the oval track, often with loud cars running by on test laps, linked by a tunnel to the fourteen holes just outside the stadium.

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He set about making a wind tunnel in his garage and placed small shields on toy school buses to test them.

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Aldridge said the test in Nevada involved dropping a laser-guided bomb into a tunnel and exploding it with a delayed fuse.

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