Numerical Study on Infrared Radiation Characteristics of Stealth Coating for Turbofan Engine Tail Nozzle

Yuwei Yuan, Hao Zeng (), Yiwen Li, Liming He and Lihai Chen
Additional contact information
Yuwei Yuan: School of Aeronautical Engineering, Air Force Engineering University, Xi’an 710038, China
Hao Zeng: School of Aeronautical Engineering, Air Force Engineering University, Xi’an 710038, China
Yiwen Li: School of Aeronautical Engineering, Air Force Engineering University, Xi’an 710038, China
Liming He: School of Aeronautical Engineering, Air Force Engineering University, Xi’an 710038, China
Lihai Chen: Department of Thermal Engineering, Hebei Petroleum University of Technology, Chengde 067000, China

Energies, 2022, vol. 15, issue 20, 1-17

Abstract: Infrared stealth technology plays a vital role in improving the survivability of future aircraft. The exhaust system is the main source of infrared radiation on the rear side of the aircraft, and stealth coating is an effective measure to reduce the infrared radiation on the solid wall of the nozzle. Mature commercial computational fluid dynamics software was used to obtain and analyze accurate data of the flow field to study the infrared radiation characteristics of the stealth coating on the turbofan engine nozzle. Furthermore, infrared simulation software based on the reverse Monte Carlo method, line-by-line calculation technique, and database technology for high-temperature gas parameters of a narrowband model were used to numerically simulate the exhaust system of a turbofan engine with infrared suppression coating. Assuming that the damage percentage of the external adjusting plate is constant, the findings reveal that the overall infrared radiation intensity exhibits a steadily increasing trend with the increase in the number of damaged adjusting plates. The maximum change in the infrared radiation intensity between eight damaged adjusting plates and one damaged adjusting plate was 11.67%. Thus, regular inspection and maintenance are required for the stealth coating on the external adjusting plate of the aero-engine tail nozzle to maintain stealth integrity.

Keywords: aero-engine; exhaust system; infrared radiation characteristics; CFD; reverse Monte Carlo method (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/20/7486/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/20/7486/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:20:p:7486-:d:939329

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().