Abstract
AbstractTo study the electromagnetic scattering characteristics of a morphing aircraft with Z-folding wings, a method of hybrid grid matrix transformation (HGMT) is presented. The radar cross-section (RCS) of the aircraft in the four Z-folding modes is calculated and analyzed. When considering the deflection of the outer wing separately, the RCS of the wing under the head and side azimuth shows obvious dynamic characteristics, while the peak and fluctuation range are quite different. When the mid wing and the outer wing are deflected upwards together, the RCS of the aircraft under the positive side direction could be significantly reduced. When the mid wing deflects upward and the outer wing remains level, the peak of the side RCS of the aircraft is slightly reduced. When the mid wing deflects upwards and the outer wing deflects downwards, this peak indicator is further reduced, while the local fluctuation of the side RCS of the aircraft is increased. The HGMT method is effective to study the electromagnetic scattering characteristics of the Z-folding aircraft.
Funder
the Project funded by China Postdoctoral Science Foundation
the National Natural Science Foundation of China
Publisher
Springer Science and Business Media LLC
Reference29 articles.
1. Ajaj, R. M., Parancheerivilakkathil, M. S., Amoozgar, M., Friswell, M. I. & Cantwell W. J. Recent developments in the aeroelasticity of morphing aircraft. Prog. Aerosp. Sci. 120, 100682 (2021)
2. Murfitt, S. L. et al. Applications of unmanned aerial vehicles in intertidal reef monitoring. Sci. Rep. 7(1), 1–11 (2017).
3. Chen, X. Y., Li, C. N. & Gong, C. L. A study of morphing aircraft on morphing rules along trajectory. Chin. J. Aeronaut. https://doi.org/10.1016/j.cja.2020.04.032 (2020).
4. Chen, Q., Bai, P., Yin, W. L., Leng, J. S. & Li, F. Design and analysis of a variable-sweep morphing aircraft with outboard wing section large-scale shearing. Acta Aerodyn. Sin. 31(1), 40–46 (2013).
5. Yue, T., Zhang, X. & Wang, L. Flight dynamic modeling and control for a telescopic wing morphing aircraft via asymmetric wing morphing. Aerosp. Sci. Technol. 70, 328–338 (2017).
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