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NASA/Porsche
I would comment that the NASA' Dryden Econoline has twice the drag of the 'Template.'
The Porsche would see a 57% drag reduction.
Neither vehicle could get there using what NASA or Porsche used.
If 0.238 and 0.28 were the ultimate goal,then NASA was able to squeak by Carl Breer's 1934-1/2 DeSoto Airflow,and Porsche was able to match Edmund Rumpler's 1928 Tropenwagen.
Both a great success!
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Photobucket album: http://s1271.photobucket.com/albums/jj622/aerohead2/
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