Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method

To study the radar characteristics of tiltrotor aircraft when considering rotor rotation and tilting actions, a dynamic calculation method (DCM) based on physical optics theory diffraction is presented. The results show that cross section single periodic it rotates, while increasing speed can shorten this period. At fixed tilt angle, overall cabin plus still exhibits various at different azimuths rotor. Increasing angle better improve electromagnetic scattering level rotor, but easily makes outer end wing become new source strong scattering. In heading direction, under larger azimuth lower tilts from horizontal to vertical position. presented DCM feasible effective obtain aircraft.