Based on the rotor icing tunnel derivation formula

and combining with the rotor icing model and discrete rotor aerodynamics model

the lift force

drag force and flapping incremental coefficient of each rotor disk area were calculated

the UH-60A helicopter nonlinear flight dynamics model in icing condition was established.Combined with the engine power data

the effect of icing-related variables on the maximum level flight speed

maximum vertical climb rate and the maximum climb rate were studied in detail by changing the icing conditions. Results show that

when the atmospheric temperature is between 0℃ and -10℃

lowering atmospheric temperature can severely degrade the flight performance; liquid water content has a certain influence on the selected performance indexes; median volumetric diameter has little effect on the maximum level flight speed

and the impact on climb performance can be neglected; the flight performance indexes linearly decline with icing time.