Flight tests of the XBT2D-1 Airplane with 2,000 pound G. P. Bomb externally attached to the fuselage resulted in serious buffeting at critical air speeds. In a memorandum from the Bureau of Ordnance, U. S. Navy, dated 13 May, 1946, the Hydrodynamics Laboratory at the California Institute of Technology was requested to make Polarized Light Flume studies and cavitation tests on a model. The object of the tests was, originally, to obtain information helpful in eliminating such buffeting
