Magnetoaerodynamic force on a magnetized body in a partially ionized flow

The magnetoaerodynamic force exerted on a magnetized model in a weakly ionized flow was investigated. In particular, the effects of the applied magnetic field's orientation with respect to the model axis were examined by rotating a spherical permanent magnet installed in the nose of the model. The axial force increase due to the applied magnetic field is clearly influenced by the orientation of the applied magnetic field and takes on a maximum value when the line connecting the magnetic poles (magnetic pole line) is perpendicular to the incoming flow direction, whereas it takes on a minimum value when the magnetic pole line is moderately inclined against the incoming flow direction. Furthermore, the side force appears when the orientation of the applied magnetic field is apart from the incoming flow direction, whereas it disappears when the magnetic pole line is perpendicular to the incoming flow direction.