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Hi,
please notice the DC-3 and its tandem wing configuration.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19840005071_1984005071.pdf
please notice the DC-3 and its tandem wing configuration.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19840005071_1984005071.pdf