Nozzle design and integration in an advanced supersonic fighter

Miller, Eugene H.; Protopapas, J.; Obye, R.; Wooten, W. H.

doi:10.2514/6.1979-1813

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Passive Countermeasures1

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2007

2019

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“…The IRSS system consists of any of the following or a combination of the following four techniques/ components: (i) Masking of hot engine parts; which includes nozzle shape alteration [101][102][103][104], jet pipe geometry modification [3,105], and fitment of new assembly [106,107]. (ii) Peak temperature reduction of exhaust gases by enhancing mixing with the surroundings.…”

Section: Passive Countermeasuresmentioning

confidence: 99%

Infrared signature studies of aerospace vehicles

Mahulikar

Sonawane

Rao

2007

Progress in Aerospace Sciences

293

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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