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Hi,here is the Northrop VTOL fighter with five lift-engines.http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19680018761_1968018761.pdf
Hi,
here is the Northrop VTOL fighter with five lift-engines.
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19680018761_1968018761.pdf
