Mode Transition in Capillary Capacitively Coupled Radio Frequency Thruster

Modelling of capillary capacitively coupled radio frequency thruster

“…The gas temperature with plasma discharge along the axis is shown in figure 10. The gas temperature remains constant and nearly the same as the boundary wall temperature T l,wall ≈ 673 K [25], for the most of the capillary length (x = 30-45 mm) and drops to ∼500 K at the capillary exit.…”

“…The quartz capillary is modelled as a solid dielectric with a density of 2200 kg m −3 and relative permittivity of 4.5. The potential on the powered (front) electrode was selected according to the rf generator output in the experiments [20,25]:…”

“…as the capillary capacitively coupled radio-frequency thruster (C 3 RFT) [25]. The difference of the C 3 RFT from other CCRF devices in the literature is the small diameter of the capillary and increased wall losses.…”

“…The C 3 RFT is typically powered by an rf generator in the frequency range of 1-2 MHz [25]. The C 3 RFT typically operated at a Ar flow rate of 8 sccm generates thrust of ∼160 µN with a specific impulse of ∼69 s using only 13 W of input power [25]. The details of experimental technique can found in [25].…”

“…The C 3 RFT typically operated at a Ar flow rate of 8 sccm generates thrust of ∼160 µN with a specific impulse of ∼69 s using only 13 W of input power [25]. The details of experimental technique can found in [25].…”