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during their development these aircraft

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were tested at NASA Ames Research

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Center's full-scale aerodynamic complex

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in Mountain View California

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the largest wind tunnel in the world the

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newly renovated facility actually houses

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two test sections

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just about any full-scale airplane

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the first which measures 40 by 80 feet

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has been used to test most of the

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nations important aircraft since 1944 it

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even played a major role in testing the

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aerodynamic qualities of the steps at

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the second wind tunnel test section

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measures 80 by 120 feet in every way

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this test section is large the air

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intake side of the building is larger

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than a football field there are

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tremendous turning vanes in the shaft of

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the wind tunnel designed to straighten

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air flow they are 12 stories high and

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160 feet wide

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both wind tunnels are powered by the

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same Bank of six electric twenty-two

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thousand five hundred horsepower motors

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that were upgraded to provide a maximum

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airspeed of 345 miles per hour in the

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forty by eighty boil test section and

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that it takes for persons to rotate one

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set of blaze during an inspection before

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any aircraft can be tested in the 80 by

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120 foot tunnel a special calibration

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boom must be installed the delicate

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instrumented 90 foot Pro determines the

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quality of the airflow and helps

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engineers compensate for effects caused

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by the wind tunnel itself one of the

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and airplay it's twin prop rotors can

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kamilla days as a test day and is now

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being adapted for practical Africa

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NASA's national full-scale aerodynamics

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complex the largest wind tunnel in the