EVALUATION OF RAIN-EROSION-RESISTANT MATERIALS TO PROTECT THE HH-43B/F HELICOPTER ROTOR
Technical rept., 30 Jul 1963-26 Dec 1964
SYSTEMS ENGINEERING GROUP WRIGHT-PATTERSON AFB OH
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The report describes the tests of various materials to determine a suitable protective covering for the HH-43BF helicopter servo-flap leading edge when operating in rain. Nineteen materials were tested and compared on a rain erosion spray rig in the electric motor whirl stand facility at WPAFB Ohio. Impact velocity varied from 330 to 730 ft per second. A description of the facility, test procedures, results and recommendations is presented. Photographs of the spray rig and test specimens are also included.
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