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Study of Statistical Narrow-Band Models for Infrared Signature of an Aeroengine Exhaust Plume in Mid-wave Infrared and Short-Wave Infrared Band
Journal Article
01-16-01-0002
ISSN: 1946-3855, e-ISSN: 1946-3901
Sector:
Topic:
Citation:
Bhatt, A. and Mahulikar, S., "Study of Statistical Narrow-Band Models for Infrared Signature of an Aeroengine Exhaust Plume in Mid-wave Infrared and Short-Wave Infrared Band," SAE Int. J. Aerosp. 16(1):21-38, 2023, https://doi.org/10.4271/01-16-01-0002.
Language:
English
Abstract:
An aeroengine exhaust plume is one of the important sources of infrared (IR)
signature in the 3-5 μm and the 2-3 μm bands. Analysis, characterization, and
modeling of the exhaust plume IR emission are needed for insight into its role
in aircraft survivability against IR-guided missiles. The IR signature
estimation of aeroengine exhaust needs estimation of radiative properties of
absorbing-emitting exhaust gases, e.g., carbon dioxide (CO2) and
water vapor (H2O). The radiative properties of the gases can be
estimated by a mathematical model with a spectroscopic database of these gases.
Low-Resolution Transmission (LOWTRAN), Moderate-Resolution Transmission
(MODTRAN), High-Resolution Transmission (HITRAN), and High-Temperature
Transmission (HITEMP) are some commonly used spectroscopic databases. This study
compares Statistical Narrow-Band (SNB) models with the various other
mathematical models used for the estimation of radiative properties of exhaust
gases. The contribution to IR signature due to constituents of engine plume is
discussed.