Susceptibility of combat aircraft modeled as an anisotropic source of infrared radiation

Kim, Tae‐Hwan; Lee, Hwanseong; Bae, Ji-Yeul; Kim, Taeil; Cha, Jonghyun; Jung, Dong-Ho; Cho, Hyung Hee

doi:10.1109/taes.2016.150513

Cited by 23 publications

(22 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The CRI is defined as the difference of radiant intensity between target and background, which is used as an index of IR signature magnitude of a target. Based on the CRI, we deduct the lock‐on envelope, which is defined as the detectable area between detector and target . The RCS is defined as the conversion of reflective energy from target into the cross‐sectional area of perfectly reflecting sphere, which is used as the evaluation index of stealth performance in microwave range .…”

Section: Resultsmentioning

confidence: 99%

Hierarchical Metamaterials for Multispectral Camouflage of Infrared and Microwaves

Kim

Bae

Lee

et al. 2019

Adv Funct Materials

Self Cite

184

171

View full text Add to dashboard Cite

Camouflage is an emerging application of metamaterials owing to their exotic electromagnetic radiative properties. Based on the use of a selective emitter and an absorber as the metamaterials, most reported articles have suggested the use of single‐band camouflage, however, multispectral camouflage is a challenging issue owing to a difference of several orders of magnitude in the unit cell structure. Herein, hierarchical metamaterials (HMMs) for multispectral signal control when dissipating the absorbed energy of microwaves through the selective emission of infrared (IR) waves from the unit cell structure of the HMM are demonstrated. Integrating an IR selective emitter (IRE) with a microwave selective absorber, multispectral signal control with the large‐sized unit cell structures of up to 10 cm are realized. With an IRE, the emissive power from the HMM toward 5–8 µm is 1570% higher than the Au surface, which is preventing the occurrence of thermal instability. Furthermore, we determine that the signature levels of targeted IR waves (8–12 µm) and microwaves (2.5–3.8 cm) are reduced by up to 95% and 99%, respectively, when applying the HMM.

show abstract

Section: Resultsmentioning

confidence: 99%

Hierarchical Metamaterials for Multispectral Camouflage of Infrared and Microwaves

Kim

Bae

Lee

et al. 2019

Adv Funct Materials

Self Cite

184

171

View full text Add to dashboard Cite

show abstract

“…Jianwei & Qiang [12] used a coupling between a CFD solver estimating aircraft skin temperature and a reverse Monte-Carlo model for radiation transfer to produce a detailed representation of the IR Signature Level (IRSL) of a fighter jet and assess the individual contribution of various aircraft components to it. Kim et al [13] employed a similar approach for IRSL estimation and combined it with a simple missile kinematic model to assess aircraft susceptibility to IR-guided air-toair missiles. Apart from high-fidelity solutions, simplified representations of aircraft IRSL are of some practical value and have also been used in several studies related to aircraft survivability: The work of Rao and Mahulikar [14], expanded in [15] [16], is based upon an isotropic aircraft IR radiation model, which, similarly to reference [13], is combined with a simple missile model to estimate missile lethal range as a function of aircraft and missile flight parameters.…”

Section: Iintroductionmentioning

confidence: 99%

“…Kim et al [13] employed a similar approach for IRSL estimation and combined it with a simple missile kinematic model to assess aircraft susceptibility to IR-guided air-toair missiles. Apart from high-fidelity solutions, simplified representations of aircraft IRSL are of some practical value and have also been used in several studies related to aircraft survivability: The work of Rao and Mahulikar [14], expanded in [15] [16], is based upon an isotropic aircraft IR radiation model, which, similarly to reference [13], is combined with a simple missile model to estimate missile lethal range as a function of aircraft and missile flight parameters. In the same context, Andersson [17] studies the effect of skin emissivity on the effectiveness of attack aircraft against IR-guided SAM sites by means of a very simplified representation of aircraft geometry.…”

Section: Iintroductionmentioning

confidence: 99%

Effects of Propulsion System Operation on Military Aircraft Survivability

Antonakis

Nikolaidis

Pilidis

2019

Journal of Aircraft

View full text Add to dashboard Cite

The recent advances in Infra-Red (IR) weapon technology have dramatically altered the rules of air combat leading to a consistent departure from 'traditional' Energy-Maneuverability philosophy in aircraft design, prioritizing stealth and sophisticated armament instead. In this modern aerial warfare environment, it is obvious that new techniques need to be applied to properly assess aircraft survivability and produce successful designs for aircraft propulsion systems. The present study focuses on the development of such a methodology, which contrary to related work in the field includes considerations for both aircraft IR signature and missile/aircraft kinematic performance. An aircraft IR signature model is constructed using a collection of methods for area & temperature estimation and exhaust plume modelling; the latter is combined with missile-vs-aircraft and aircraft-vsaircraft simulations to quantify aircraft survivability in the form of missile & aircraft lethal zones. The proposed methodology is applied to a study on propulsion system effects on aircraft survivability, in which a comparison between different engine configurations is performed: In the scenarios examined, IR signature at cruise conditions and maximum-power thrust performance are identified as key parameters for aircraft combat performance. Nomenclature (Nomenclature entries should have the units identified) A = Area AB = Afterburner

show abstract

“…또한, 적외선 탐지기에서는 항공기의 방사 신호와 배경의 방사 신호의 차이인 contrast radiance intensity (CRI)를 이용하여 항공기를 탐지한다. 이를 바탕으로 항공기를 점 신호원으로 가정하여 항공기의 적외선 신호 특성을 모델링하려는 연구가 수행되었고 [5] , 최근 에는 항공기 주변의 열유동 특성을 기반으로 이방성 신호원으로 모델링하려는 시도가 있었다 [6][7][8] . 이를 기 반으로 항공기와 미사일이 동일한 평면 상에 있을 때 둘 사이의 상대 운동을 고려하여 피격성 분석을 수행 한 연구가 다수 존재한다 [5][6][7][8] [9] .…”

unclassified

“…이를 바탕으로 항공기를 점 신호원으로 가정하여 항공기의 적외선 신호 특성을 모델링하려는 연구가 수행되었고 [5] , 최근 에는 항공기 주변의 열유동 특성을 기반으로 이방성 신호원으로 모델링하려는 시도가 있었다 [6][7][8] . 이를 기 반으로 항공기와 미사일이 동일한 평면 상에 있을 때 둘 사이의 상대 운동을 고려하여 피격성 분석을 수행 한 연구가 다수 존재한다 [5][6][7][8] [9] . ANSYS Fluent를 통한 대류 열전달 해석 을 통해 얻어지는 열전달 계수와 T fluid 를 상용 솔버인 TAIThermIR 13에서 전도 및 복사 열전달 해석의 경 계 조건으로 사용하여 복합 열전달 해석을 수행하였 으며 [9] , 이를 통해 항공기 동체 표면 온도 분포를 도 출할 수 있다.…”

unclassified

IR Susceptibility of Supersonic Aircraft according to Omni-directional Detection Angle

Nam¹,

Chang²,

Park³

et al. 2021

J. KIMS Technol

Self Cite

View full text Add to dashboard Cite

Infrared guided weapons act as threats that greatly degrade the survivability of combat aircraft. Infrared weapons detect and track the target aircraft by sensing the infrared signature radiated from the aircraft fuselage. Therefore, in this study, we analyzed the infrared signature and susceptibility of supersonic aircraft according to omni-directional detection angle. Through the numerical analysis, we derived the surface temperature distribution of fuselage and omni-directional infrared signature. Then, we calculated the detection range according to detection angle in consideration of IR sensor’s parameters. Using in-house code, the lethal range was calculated by considering the relative velocity between aircraft and IR missile. As a result, the elevational susceptibility is larger than the azimuthal susceptibility, and it means that the aircraft can be attacked in wider area at the elevational situation.

show abstract

Susceptibility of combat aircraft modeled as an anisotropic source of infrared radiation

Cited by 23 publications

References 20 publications

Hierarchical Metamaterials for Multispectral Camouflage of Infrared and Microwaves

Hierarchical Metamaterials for Multispectral Camouflage of Infrared and Microwaves

Effects of Propulsion System Operation on Military Aircraft Survivability

IR Susceptibility of Supersonic Aircraft according to Omni-directional Detection Angle

Contact Info

Product

Resources

About