Electromagnetic Scattering Influence of Shaping Stealth Improvement for Airborne Cruise Missile

Abstract

Stealth technology is an important technical means to improve the penetration capability of cruise missiles. In order to analyze the influence of shaping stealth on the electromagnetic scattering characteristics of cruise missiles, the electromagnetic models of stealth and conventional cruise missiles are established, and the distribution of radar cross section(RCS) curves for shaping stealth, frequency and pitch angle response characteristics are studied based on Physical Optics method and RCS reduction value. The results show that shaping stealth could greatly reduce scattering characteristics in nose and rear direction, it also could change the peak position of RCS scattering and make the curve converge inward in nose and rear direction. And with the frequency increasing, the mean values and reduction values oscillate respectively around -32 dBsm and 25 dB, the RCS mean values decrease and reduction values increase in the other angular domains. While the scattering characteristics is not affected with small variation of pitch angle, and the RCS mean values and reduction values in every angular domains oscillate, the reduction mean value in nose direction is about 35 dB, and the maximum value exists in rear direction in the pitch angle of 0°.

Keywords

• cruise missiles
• shaping stealth
• electromagnetic scatterings
• rcs
• aircraft