Blunt hub affecting the radar cross section of rotor based on dynamic scattering method

Zhou, Zeyang; Huang, Jun; Chen, Chen; Zhang, Jiaren

doi:10.1177/09544100211024066

Cited by 2 publications

(4 citation statements)

References 17 publications

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“…For more information on rotor dynamic scattering, please refer to Ref. 12 Consider the rotation of rotor 2…”

Section: Dynamic Grid Transformationmentioning

confidence: 99%

“…For more information on instantaneous RCS calculation, refer to the references. 12,15 The radar cross-sections under different observation conditions are quite different, and the difference is usually reduced by taking logarithm. Unit dBm 2 is a common unit of radar cross-section, where the conversion relationship between dBm 2 and another unit m 2 can be expressed as…”

Section: Instantaneous Rcs Computingmentioning

confidence: 99%

“…11 The influence of the three configurations of the hub on the rotor dynamic RCS has been studied and investigated. 12 A large aspect ratio wing has been designed and analyzed, in which a small dihedral angle is used at the end of the wing. 13 A low RCS millimeter wave antenna array is presented.…”

Section: Introductionmentioning

confidence: 99%

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W-type flying wing radar cross-section analysis

Zhou

Huang

2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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To study the electromagnetic scattering characteristics of a W-type flying wing with two rotors, a computing method is presented. The method includes two modules: dynamic grid transformation and instantaneous RCS (radar cross-section) computing. The results show that the surface of the blade and the leading edge of the wing have a high level of scattering under the irradiation of forward radar waves. The scattering characteristics of the rotor support cabin are enhanced when electromagnetic waves are incident from the side. At the given positive elevation angle, the mean of aircraft RCS curve under side direction decreases first and then increases with the increase in azimuth. The fluctuation range of the aircraft RCS curve under different tail azimuths is similar at the given negative elevation angle. The computing method is effective for analyzing the RCS of the W-type flying wing.

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“…For more information on rotor dynamic scattering, please refer to Ref. 12 Consider the rotation of rotor 2…”

Section: Dynamic Grid Transformationmentioning

confidence: 99%

Section: Instantaneous Rcs Computingmentioning

confidence: 99%

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W-type flying wing radar cross-section analysis

Zhou

Huang

2022

Proceedings of the Institution of Mechanical Engineers, Part G:

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“…If the stealth design of the aircraft can give consideration to the stealth performance in the maneuvering state, the survivability of the aircraft can be further improved. Zhou et al [10][11][12][13][14] used the physical optics method (PO) to analyze the RCS of tiltrotor aircraft and helicopter rotors and improved numerical calculation methods. Cristhian et al 15 used shooting and bouncing racy (SBR) method to analyze the stealth performance of canard.…”

Section: Introductionmentioning

confidence: 99%

Investigations on electromagnetic scattering characteristics of aircraft rudder considering electromagnetic discontinuities

Gu,

Chen,

Gao

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part G:

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This work investigates the scattering characteristics of the rudder structure of aircraft considering electromagnetic discontinuities through multi level fast multipole algorithm (MLFMA) of the computational electromagnetics. Firstly, the scattering characteristics of the rudder seam and its influence on the omnidirectional radar cross section (RCS) are performed. Based on the traditional high-frequency analysis theory, the source and spatial contribution distribution of seam scattering are further studied. Numerical results demonstrate that the sidewall of the rudder seam is an important scattering source, and the radar absorbing material (RAM) coated on the sidewall of the seam has a good RCS reduction effect. In addition, this work presents the influence of the rudder deflection on the stealth performance, analyzes the effect of the rudder movement of the ordinary aileron and the split drag rudder on the scattering characteristics of the whole aircraft. The common aileron has little effect on the stealth performance of the aircraft, and it only causes scattering peak in the direction opposite to the control surface. However, the split drag rudder has great damage to the opposite direction stealth performance of the aircraft. When its deflection angle is 45°, the mean value of the opposite direction RCS increases by about two orders of magnitude compared with the deflection angle 0° state. The results indicate that the structure of aircraft rudder has a significant impact on the RCS characteristics of the whole aircraft.

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Blunt hub affecting the radar cross section of rotor based on dynamic scattering method

Cited by 2 publications

References 17 publications

W-type flying wing radar cross-section analysis

W-type flying wing radar cross-section analysis

Investigations on electromagnetic scattering characteristics of aircraft rudder considering electromagnetic discontinuities

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