Obstruction of infrared signature with cold gases

Baş O.

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, cilt.236, sa.16, ss.3531-3539, 2022 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 236 Sayı: 16
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1177/09544100221089054
  • Dergi Adı: Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Sayfa Sayıları: ss.3531-3539
  • Anahtar Kelimeler: IR signature suppression, statistical narrow band, cold gas injection, ethylene, species transport, plume, BAND MODEL, PARAMETERS, H2O, CO2
  • TED Üniversitesi Adresli: Evet

Özet

© IMechE 2022.The idea of infrared signature reduction by injecting cold gas between the source and observer has been investigated. Statistical narrow band coefficients of ethylene have been generated from HITRAN spectroscopic database and proposed to attenuate radiation on the 8–14 μm spectral region whereas CO2 is employed for 3–5 μm wavelength band suppression. Dilution of ethylene with CO2 also suppresses the flammability and guarantees safe operation. Several 1-D test cases are solved to validate the developed solver, and the proposed method is tested on 1-D and 3-D problems. The results satisfactorily show that a significant and safe radiance reduction can be achieved with cold CO2 diluted ethylene injection between the exhaust and observer on the whole spectrum.