Aircraft Plume Infrared Signature in Nonafterburning Mode

Mahulikar, Shripad P.; Rao, G. A.; Sane, S. K.; Marathe, Anil

doi:10.2514/1.14686

Cited by 51 publications

(14 citation statements)

References 12 publications

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“…It is inferred that the spectral intensity of aircraft plumes as received by IR-guided SAMs in non-afterburning mode, is prominent only in the 4.14-4.45 mm band (Fig. 12) [79]. In non-afterburning mode, the IRSL from the plume is much lower than from the tail-pipe and rear fuselage, which is contrary to popular belief.…”

Section: Analysis Of Plume Ir Signaturementioning

confidence: 86%

Infrared signature studies of aerospace vehicles

Mahulikar

Sonawane

Rao

2007

Progress in Aerospace Sciences

292

111

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Infrared (IR) emissions from aircraft are used to detect, track, and lock-on to the target. MAN Portable Air Defence Systems (MANPADS) have emerged as a major cause of aircraft and helicopter loss. Therefore, IR signature studies are important to counter this threat for survivability enhancement, and are an important aspect of stealth technology. This paper reviews contemporary developments in this discipline, with particular emphasis on IR signature prediction from aerospace vehicles. The role of atmosphere in IR signature analysis, and relation between IR signature level and target susceptibility are illustrated. Also, IR signature suppression systems and countermeasure techniques are discussed, to highlight their effectiveness and implications in terms of penalties.

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Section: Analysis Of Plume Ir Signaturementioning

confidence: 86%

Infrared signature studies of aerospace vehicles

Mahulikar

Sonawane

Rao

2007

Progress in Aerospace Sciences

292

111

View full text Add to dashboard Cite

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“…The plume becomes a dominant source in case of the use of afterburner in aircraft [13]. The elements of engine consists of a jetpipe, starting from turbine exit disc till the end of the choked convergent nozzle (Fig.…”

Section: Turbojet Engine Performance For Off-design Conditionsmentioning

confidence: 99%

Aircraft engine's infrared lock-on range due to back pressure penalty from choked convergent nozzle

Baranwal

Mahulikar

2014

Aerospace Science and Technology

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“…Calculation of Spectral Intensity Based on the Narrowband Model When analyzing the susceptibility characteristics associated with aircraft IR signatures, the characteristics of IR signals generated from the rear fuselage and plumes are considered important factors. In this study, the narrowband model considered by Grosshandler [25] and Mahulikar et al [11] was applied to calculate plume IR signatures. This model enables the calculation of the average radiation properties in a section of IR wavelength and is considered more efficient compared to the line-by-line band model, which requires longer calculation time.…”

Section: Infrared Signature Analysismentioning

confidence: 99%

“…Decher [8] analyzed the link between the shape of a nozzle outlet and IR signals. Recently, Mahulikar et al [9][10][11], Rao and Mahulikar [12,13], Mahulikar et al [14,15], and Rao and Mahulikar [16] conducted research quantifying aircraft infrared signatures for numerical calculation and examined the effects of atmospheric transmission and radiance on aircraft infrared signatures. Based on this, the Mahulikar research team acquired data related to a method for numerically calculating aircraft infrared signatures and the effects of atmospheric conditions on IR signatures.…”

mentioning

confidence: 99%

Analysis of Plume Infrared Signatures of S-Shaped Nozzle Configurations of Aerial Vehicle

Kang

Baek

et al. 2016

Journal of Aircraft

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The infrared susceptibility of the propulsion system of an aircraft is significantly affected by nozzle shapes and atmospheric conditions. To examine the effects of nozzle shapes and atmospheric conditions, various nozzle shapes were selected by considering a representative low-observable unmanned aerial vehicle and its propulsion system. Then, using the density-based Navier-Stokes-Fourier computational-fluid-dynamics code, the thermal flowfield and the distribution of chemical species within a plume, which are essential for the analysis of infrared signatures, were calculated. From the analysis of plume infrared signatures for noncircular nozzles, it was found that infrared signature levels were reduced significantly in the axial direction. However, relatively higher signature levels were observed on the left and right sides and below the nozzle due to increase in the aspect ratio of the nozzle outlet as well as curvature, which led to a wider distribution of the plumes along a downward slope. Further, to take into account atmospheric effects, the atmospheric transmissivity according to changes of season and observational distance was analyzed in detail. Finally, the lock-on range was calculated for different nozzle configurations and was compared with the basic circular shape.Article in Advance / 1 JOURNAL OF AIRCRAFT Downloaded by RMIT BUNDOORA LIBRARY on June 23, 2016 | http://arc.aiaa.org |

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Aircraft Plume Infrared Signature in Nonafterburning Mode

Cited by 51 publications

References 12 publications

Infrared signature studies of aerospace vehicles

Infrared signature studies of aerospace vehicles

Aircraft engine's infrared lock-on range due to back pressure penalty from choked convergent nozzle

Analysis of Plume Infrared Signatures of S-Shaped Nozzle Configurations of Aerial Vehicle

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