Based on the jet Reynolds-similarity theory

the plasma jet flow control performance in stratosphere can be equivalently simulated in ground conditions. Firstly

the SDBD experiment was conducted to determine the geometrical and electrical parameters

which ensured the plasma actuator to get the same Reynolds number of induced jets in ground and stratosphere

respectively. Then

the actuator

whose geometrical and electrical parameters were known

was applied to control the airfoil flow separation

and the airfoil had the same Reynolds number in ground and stratosphere with different velocities.Finally

the airfoil lift coefficients before and after plasma jet discharges in ground and stratosphere were obtained through numerical simulation. It is found that

with the plasma flow control

the airfoil lift coefficient in ground increases nearly equally to that in stratosphere. The deviation of airfoil lift coefficients of ground and stratosphere at the critical angle of attack is large while it is small at the rest. With the plasma flow control

the deviation of the lift coefficients of ground and stratosphere ranges from 1.27% to 5.26% at the critical attack angle

and it ranges from 0.04% to 0.98% at the rest.