FLIGHT TESTS OF THE HYDRODYNAMIC CHARACTERISTICS OF A JAPANESE 'EMILY' FLYING BOAT

摘要

The results of quantitative and qualitative flight tests of the hydrodynamic characteristics of a Japanese "Emily" flying boat are presented. The tests on this airplane were conducted at the Naval Air Test Center at Patuxent River, Maryland.nThe flight tests showed that the airplane had very little longitudinal hydrodynamic stability during take-off and was definitely inferior in this respect to contemporary U. S. Navy flying boats. The directional stability of the "Emily" was about average, though the airplane was responsive to small asymmetric power adjustments. The main—spray characteristics of this airplane during taxying were superior to those of other existing flying boats.nModel spray tests undertaken at the Experimental Towing Tank in Hoboken, New Jersey, showed that the excellent spray characteristics of the "Emily" were attributable to the inboard spray strips on the forebody.