High Load Conditions Measured On A UH-60A In Maneuvering Flight

Maneuver data obtained under the NASA/Army UH-60A Airloads Program are examined qualitatively to show the effects of maneuvering flight conditions on rotor loads. Two test conditions have been selected for review based on a comparison of all 68 maneuvers conditions flown in the test program. These two conditions are ranked in the top ten for rotor load severity and show the effects of three-dimensional compressibility and dynamic stall on the rotor system. A detailed assessment of the section lift and moment calculated from measured pressures for each condition is provided.