Effects of Nozzle Characteristics on the Rear Fuselage Temperature Distribution

Yi, Kyung-Joo; Baek, Seung-Wook; Lee, Sung‐Nam; Kim, Man-Young; Kim, Won-Cheol

doi:10.5139/jksas.2011.39.12.1141

Cited by 6 publications

(1 citation statement)

References 8 publications

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“…The IR signature is strongly related to the skin temperature of the exhaust system; the temperature distribution at the rear of the fuselage of fighter aircraft can be used to estimate the IR signature levels [5]. Radiative heat transfer calculations using statistical narrow-band models have been used to determine the wall temperature distribution of aircraft exhaust systems [6], and the effect of the characteristics of the rear part of the fuselage on improving the survivability has been examined [7]. IR signature suppression analysis is important; however, it is necessary to evaluate the survivability characteristics of aircraft as well.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Heat Shielding in Jet Engine Exhaust Systems on Aircraft Survivability

Baek

Kim

et al. 2014

Numerical Heat Transfer, Part A: Applications

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The infrared signatures from hot engine parts pose major threats to military aircraft survivability. Reducing the skin temperature at the rear of the fuselage is key to reducing susceptibility to heat-seeking armaments. A heat shield placed between the nozzle wall and the outer casing of the engine can decrease the skin temperature at the rear of the fuselage. Therefore, numerical modeling of the fluid flow fields coupled with the radiative and conductive processes within the heat shield, nozzle, and casing were performed to determine the temperature distribution at the rear of the fuselage. The effect of the material properties and the dimensions of the heat shield were studied in order to determine their effects on the susceptibility of an aircraft.

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Section: Introductionmentioning

confidence: 99%

The Effects of Heat Shielding in Jet Engine Exhaust Systems on Aircraft Survivability

Baek

Kim

et al. 2014

Numerical Heat Transfer, Part A: Applications

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Computational Investigation of the Effect of UAV Engine Nozzle Configuration on Infrared Signature

Kang¹,

Kim

Myong³

et al. 2013

Journal of the Korean Society for Aeronautical & Space Scie

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The effects of various nozzle configurations on infrared signature are investigated for the purpose of analysing the infrared signature level of aircraft propulsion system. A virtual subsonic aircraft is selected and then a circular convergent nozzle, which meets the mission requirements, is designed. Convergent nozzles of different configurations are designed with different geometric profiles. Using a compressible Navier-Stokes-Fourier CFD code, an analysis of thermal flow field and nozzle surface temperature distribution is conducted.

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Computational Investigation of the Effect of Various Flight Conditions on Plume Infrared Signature

Kim¹,

Chun²,

Myong³

et al. 2013

Journal of the Korean Society for Aeronautical & Space Scie

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The plume infrared signature effects at various flight conditions of aircraft were investigated for the purpose of reducing infrared signature level. The nozzle of a virtual subsonic unmanned combat aerial vehicle was designed through a performance analysis.Nozzle and associated plume flowfields were first analyzed using a density-based CFD code and plume IR signature was then calculated on the basis of the narrow-band model.Finally, qualitative information for the plume infrared signature characteristics was obtained through the analysis of the IR signature effects at various flight conditions.

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Effects of Nozzle Characteristics on the Rear Fuselage Temperature Distribution

Abstract: In order to enhance the aircraft survivability, infrared signatures emitted by engine parts should be diminished. For its reduction it is necessary for the rear fuselage temperature to be decreased. In this study, numerical modeling of flow fields and heat transfer of nozzle is

Cited by 6 publications

References 8 publications

The Effects of Heat Shielding in Jet Engine Exhaust Systems on Aircraft Survivability

The Effects of Heat Shielding in Jet Engine Exhaust Systems on Aircraft Survivability

Computational Investigation of the Effect of UAV Engine Nozzle Configuration on Infrared Signature

Computational Investigation of the Effect of Various Flight Conditions on Plume Infrared Signature

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