HIGH-LOAD CONDITIONS MEASURED ON A UH-60A IN MANEUVERING FLIGHT

Maneuver data obtained under the NASA/Arrny UH60A Airloads Program are examined qualitatively to show the effects of maneuvering flight cond itions on rotor loads. Two test conditions have been selected for revi ew based on a comparison of an 68 maneuver conditions flown in the tes t program. These two conditions were selected because they ranked in t he top ten for rotor load severity and show two different types of non -linear aerodynamic behavior, three-dimensional compressibility and dy namic stall, A detailed assessment of the section lift and moment calc ulated from measured pressures for each condition is used to provide i nsight into these two phenomenon.