Fast coating analysis and modeling for RCS reduction of aircraft

Zeng, Haotian; Zhao, Xiang; Su, Qin; Li, Hao

doi:10.1016/j.cja.2018.11.001

Cited by 9 publications

(6 citation statements)

References 15 publications

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“…In this case, two modes of operation are possible: when the time of viewing the space by the active channel is equal to the time of viewing by the passive channel of the tracking radar -that is, synchronous mode, and when the time of viewing the airspace by the corresponding channels does not match -non-synchronous mode. A feature of the passively active method of tracking air targets with an artificially reduced RCS [34] is that passive means cannot measure the range to the target, but only measure the angular coordinates. Therefore, range tracking is offered by listing estimates, since the range to the target is a function of the angular coordinates and a rough measure of the range to the target of the detection radar.…”

Section: A the Structure Of The Resonant Radar Feedmentioning

confidence: 99%

Methodology for the Development of Radar Control Systems for Flying Targets with an Artificially Reduced RCS

Parkhomey

Boiko

Eromenko

2022

Journal of Robotics and Control

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The article explores methods for detecting and tracking air targets in radar with an artificially reduced radar cross-section (RCS). A technique for control the radar antenna system using an adaptive method is presented, which is based on adapting the system to the conditions of information uncertainty due to fluctuations in the excitation signal of the radar target's radar-absorbing coating. Known methods of radar aircraft (active and passive, which do not take into account the structure of the coating of the aircraft) do not allow obtaining information about an air target with an artificially reduced RCS. The main contribution of this article is the development of radar and control methods based on the resonant frequency-phase interaction of the microwave electromagnetic field with the crystal structure of the radar absorbing coating of the aircraft. The stages of antenna system control based on the "frequency-phase detection method", "passive-active" tracking method, and "adaptive method" of antenna control have been studied. To test the proposed methods, an experiment was conducted to determine the transient process in the control system under conditions of information uncertainty. As a result of the experiment, the probability of tracking the target is increased by 14-19%. The findings will be useful for developers of radar and control systems for modern air facilities with an artificially reduced RCS.

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Section: A the Structure Of The Resonant Radar Feedmentioning

confidence: 99%

Methodology for the Development of Radar Control Systems for Flying Targets with an Artificially Reduced RCS

Parkhomey

Boiko

Eromenko

2022

Journal of Robotics and Control

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“…However, excessive pursuit of shape stealth would affect the aerodynamic performance of the aircraft, and the use of stealth materials could improve the stealth performance of the aircraft on the premise that the aerodynamic shape of the aircraft remains unchanged. Radar stealth materials could be divided into structural radar absorbing materials (SRAM) and coated radar absorbing materials (CRAM) [4] [5] according to the bearing form. The former was replacing the latter gradually due to its easy realization of lightweight, high strength, and broadband characteristics.…”

Section: Introductionmentioning

confidence: 99%

Optimization strategy of multifunctional composite laminates for improved load bearing and EMW absorbing capacity

Bowen

2023

Preprint

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The thin structure that possesses both excellent stealth and load-bearing capabilities has a high demand in the military. This article proposes a multifunctional composite laminates, along with its optimization strategy. The novel structure comprises several layers of Glass Fiber Reinforced Plastics and each layer has a fixed thickness. The matrix of each layer is made of polylactic acid dispersed with graphene oxide of varying volume fractions, which facilitates the transmission, absorption, and reflection of electromagnetic waves (EMW). The multi-objective optimization strategy of composite laminates is conducted by considering the ply orientation and volume fraction of graphene oxide as design variables, and the bending stiffness and EMW absorbing bandwidth of the overall structure as design objectives, meanwhile the JAYA, a metaheuristic algorithm is employed as the optimizer. The results demonstrate that the optimization algorithm can efficiently adjust the structure to an optimal state. Furthermore, compared with the original structure, the optimized structure has a 190% increase in load-bearing capacity and a 30.3% increase in EMW absorbing performance.

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“…Thote, discussed the Ferrite-based paints for lower frequencies as a RAM material for aerospace in RCS reduction, shipboard, aperture antenna absorber coating (RCS antenna) applications [11]. Haotian Zeng et al [12] presented the fast coating analysis and modeling method Higher -Order Method of Moments (HOMOM) and Locally Coating Method (LCM) etc, for aircraft RCS reduction application. The RCS is analysed with and without coating of material.The range 5 to -35 dB at θ = 95 0 , -2 to -50 dB at θ = 90 0 and -1 to -21 dB at θ = 0 0 of RCS is presented [12].…”

Section: Introductionmentioning

confidence: 99%

Data Analysis of Polyethylene Base RAM for Small Vehicle’s low Signature’s Applications

Kailas K. Sawant,

Bhavana Shanmughan,

K. Balasubramanian

et al. 2023

IJETMS

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The signature of radar target is an important aspect in military war. The demands for low signature targets have been increased to achieve the ‘critical mission successes’ in defence. Worldwide scientists and engineers are incessant working on it. This paper presents the data analysis of radar absorbing material (RAM) suitable for attaining of low signature applications for small air vehicles such as sUAV, μUAV, drones, hexcopter, spy birds etc. In this paper, the polyethylene (PE) and their composites characteristics and data analysis are presented, for applications in small air vehicles to attain the lower value of their target signatures. This is achieved in terms of EM measurement parameters of RAM material such as reflection loss, transmission loss, absorption loss, shielding effectiveness (SE), radar cross section (RCS) etc. The obtained values of reflection loss are – 29.49 dB, - 36.91 dB and – 23.94 dB; then, the transmission loss are – 133.18 dB, - 128.70 dB and – 0.19 dB for PE, polyethylene terephthalate (PET) and PET + conductive paint (PETCP) respectively for materials by waveguide measurement (WGM) method. The SE range are – 0.009 dB to – 0.19 dB, - 0.005 dB to - 0.29 dB, and - 0.022 dB to – 1.91 dB in WGM; then, - 9.44E-07 dB to – 1.13E-06 dB, - 9.57E-07 dB to – 1.01 E-06 dB and – 9. 31 E-07 dB to – 1.08E-06 dB in OATS experiments for PE, PET and PETCP respectively for the materials are obtained. The lowest value of RCS in OATS method are 1.63E-08 , 6.46E-08 and 5.63E-08 for PE, PET and PETCP respectively for material are obtained. The contact angle & material thickness (t) are 78.50 & 0.08 mm; 66.18 & 0.09 mm and 93.45 & 0.12 mm for PE, PET and PETCP respectively, are proposed in this paper. There is good agreement between the material controlling parameters design and the tabular analysis presented in this paper. This materials are used as RAM in small aircrafts, sUAV, μUAV, drones, hexcopter, spy birds, ships etc, to attain their low signature value, low RCS, stealth and shielding applications in X – band of 8 to 12 GHz frequency range.

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Fast coating analysis and modeling for RCS reduction of aircraft

Cited by 9 publications

References 15 publications

Methodology for the Development of Radar Control Systems for Flying Targets with an Artificially Reduced RCS

Methodology for the Development of Radar Control Systems for Flying Targets with an Artificially Reduced RCS

Optimization strategy of multifunctional composite laminates for improved load bearing and EMW absorbing capacity

Data Analysis of Polyethylene Base RAM for Small Vehicle’s low Signature’s Applications

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