English: The plasma magnet (PM) sail design generates a static magnetic dipole as illustrated in the figure. As shown in the detailed view on the right an onboard power supply applies a sinusoidal Alternating Current out of phase by 90 degrees to each of two small crossed perpendicularly oriented coils, which generates a Rotating Magnetic Field (RMF) with rotational speed ω_RMF fast enough to leave ions in place but fast enough to rotate electrons from the plasma wind. The figure illustrates rotation using color coded contours of constant magnetic strength and not magnetic field lines. As shown in the left this creates a current disc shown as transparent red in the figure with darker shading indicating greatest density near the coil pair and extending out to the magnetopause radius R_mp. This induced current is orders of magnitude greater than the current input to the coils and creates a magnetic dipole perpendicular to the current disc.