image Public Domain Boeing 747 wake vortex test-440 in thr 40x80ft. w.t. with Rufiange, Vern Rossow, Eloy Martinez NASA/Ames Research Center 5/24/1974 1974 BonnieReal 2009-08-14 18:18:59 AILS_AC74-2201 bonnie@archive.org 2009-08-15 03:29:25 2009-08-15 04:52:19 amesresearchcenterimagelibrary nasa image