Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method
To study the radar characteristics of the tiltrotor aircraft when considering rotor rotation and tilting actions, a dynamic calculation method (DCM) based on physical optics and physical theory of diffraction is presented. The results show that the radar cross section of a single rotor is dynamic an...
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MDPI AG
2021-05-01
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Online Access: | https://www.mdpi.com/2304-6732/8/6/175 |
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doaj-ff4c97810b134a468aca386df5cb16c32021-06-01T00:46:37ZengMDPI AGPhotonics2304-67322021-05-01817517510.3390/photonics8060175Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation MethodZeyang Zhou0Jun Huang1Chen Chen2Jiaren Zhang3School of Aeronautic Science and Engineering, Beihang University, Beijing 100191, ChinaSchool of Aeronautic Science and Engineering, Beihang University, Beijing 100191, ChinaHIWING Aviation General Equipment Corporation Limited, Beijing 100074, ChinaAVIC SAC Commercial Aircraft Company Limited, Shenyang 110179, ChinaTo study the radar characteristics of the tiltrotor aircraft when considering rotor rotation and tilting actions, a dynamic calculation method (DCM) based on physical optics and physical theory of diffraction is presented. The results show that the radar cross section of a single rotor is dynamic and periodic when it rotates, while increasing the rotation speed can shorten this period. At a fixed tilt angle, the overall radar cross section of the cabin plus rotor still exhibits various dynamic characteristics at different azimuths when considering the rotation of the rotor. Increasing the tilt angle can better improve the electromagnetic scattering level of the rotor, but this easily makes the cabin and the outer end of the wing become a new source of strong scattering. In the heading direction, the dynamic radar cross section of the aircraft under a larger azimuth angle is lower when the cabin tilts from horizontal to vertical position. The presented DCM is feasible and effective to obtain the electromagnetic scattering characteristics of tiltrotor aircraft.https://www.mdpi.com/2304-6732/8/6/175tiltrotor aircraftradar stealthdynamic electromagnetic scatteringradar cross-section |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zeyang Zhou Jun Huang Chen Chen Jiaren Zhang |
spellingShingle |
Zeyang Zhou Jun Huang Chen Chen Jiaren Zhang Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method Photonics tiltrotor aircraft radar stealth dynamic electromagnetic scattering radar cross-section |
author_facet |
Zeyang Zhou Jun Huang Chen Chen Jiaren Zhang |
author_sort |
Zeyang Zhou |
title |
Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method |
title_short |
Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method |
title_full |
Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method |
title_fullStr |
Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method |
title_full_unstemmed |
Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method |
title_sort |
keen investigation of the electromagnetic scattering characteristics of tiltrotor aircraft based on dynamic calculation method |
publisher |
MDPI AG |
series |
Photonics |
issn |
2304-6732 |
publishDate |
2021-05-01 |
description |
To study the radar characteristics of the tiltrotor aircraft when considering rotor rotation and tilting actions, a dynamic calculation method (DCM) based on physical optics and physical theory of diffraction is presented. The results show that the radar cross section of a single rotor is dynamic and periodic when it rotates, while increasing the rotation speed can shorten this period. At a fixed tilt angle, the overall radar cross section of the cabin plus rotor still exhibits various dynamic characteristics at different azimuths when considering the rotation of the rotor. Increasing the tilt angle can better improve the electromagnetic scattering level of the rotor, but this easily makes the cabin and the outer end of the wing become a new source of strong scattering. In the heading direction, the dynamic radar cross section of the aircraft under a larger azimuth angle is lower when the cabin tilts from horizontal to vertical position. The presented DCM is feasible and effective to obtain the electromagnetic scattering characteristics of tiltrotor aircraft. |
topic |
tiltrotor aircraft radar stealth dynamic electromagnetic scattering radar cross-section |
url |
https://www.mdpi.com/2304-6732/8/6/175 |
work_keys_str_mv |
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_version_ |
1721413934974500864 |