In order to explore the characteristics of radio frequency（RF） plasma glow discharge versus wind velocity and air pressure

we established an RF plasma glow discharge experimental system under the background of plasma anemometer

and investigated the discharge characteristics of actuator under different discharge gap distances（0.05 mm and 0.08 mm）

wind velocity（0

4

5 m/s）

output power（10 W and 20 W）

and pressure（50

1

00 k Pa）. The experimental results show that

with the decrease of air gap spacing

the glow discharge becomes more stability. Under the constant output power and the constant working frequency

the relationship between the actuator load voltage and wind velocity can be divided into three stages: the overheated stage

the linear stage and the unstable stage. Under different output power

the actuator load

voltage and wind velocity have a linear relationship at different range of wind velocity. Characteristics of RF plasma glow discharge are insensitive with air pressure under the static pressure corresponding to the subsonic velocity（total pressure is the air pressure）.