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This year Arnold Engineering 

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Development Complex celebrates 75 years 

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of American innovation . From the 

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beginning at Arnold , workflow patterns 

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were established where test projects 

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began with intensive planning before 

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moving to scale models . The wind 

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tunnels allowed test operators to put 

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articles through multiple iterations in 

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a short amount of time at a tremendous 

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savings , all while safely on the 

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ground . Make plans to come celebrate 

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the seventy-fifth anniversary of AEDC 

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with us at the Arnold Air Force Base 

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open house on June 27th .