International Journal of Aeronautical and Space Sciences

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Conceptual design and RCS property research of three-surface strike fighter

  • Yue, Kuizhi (Department of Airborne Vehicle Engineering, Naval Aeronautical and Astronautical University, School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics) ;
  • Tian, Yifeng (School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics) ;
  • Liu, Hu (School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics) ;
  • Han, Wei (Department of Airborne Vehicle Engineering, Naval Aeronautical and Astronautical University)
  • Received : 2014.04.02
  • Accepted : 2014.09.19
  • Published : 2014.09.30
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Abstract

This paper mainly focuses on the conceptual design and stealth performance of the three-surface military aircraft. A three-dimensional (3-D) digital mock-up of the three-surface strike fighter with stealth feature was designed and the schemes of carrying missiles were analyzed in CATIA. Based on physical optics principle and the Method of Equivalent Currents (MEC), a numerical simulation of the RCS feature of the aircraft was carried out with RCSPlus which is a software designed by Beihang University. The paper contributes to the RCS feature analysis of the whole plane and different parts on X-band, S-band and UHF-band and a comparison of RCS feature to Su-37 and T-50 military aircraft is drawn. On X-band, the pitch angle of the incident wave was $0^{\circ}$, and the result shows: (1) Compared with Su-37 aircraft, the forward scattering RCS of the three-surface strike aircraft was reduced to 14.9%, the side scattering RCS to 9.6% and the back scattering RCS to 40.2%. (2) Compared with T-50 aircraft, the forward scattering RCS was reduced to 38.61%, and the side scattering RCS to 67.26%. This paper should be useful for researchers in conceptual design and stealth technology of the military aircraft.

Keywords

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