I got the relationship between power, thrust and specific impulse for an ion electrospray thruster as follows:

$$P/T= 1/2 \times g_o \times I_{\mathrm{sp}}$$

Where: $P$ = power required (in Watts), $T$ = thrust (in Newtons), $g_o$ = gravitational parameter (9.81 m/s²), $I_{\mathrm{sp}}$ = specific impulse (in seconds).

But I want to know how the dimensions of the emitter, propellant tank, extractor thickness, extractor - emitter gap, etc. affect the thrust or specific impulse of an electrospray thruster which can be used for CubeSats.


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