Numerical analysis of rectangular plug nozzle considering practical geometry and flow conditions

Hidemasa Miyamoto, Akiko Matsuo, Takayuki Kojima, Hideyuki Taguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Numerical analyses of ideal contoured rectangular plug nozzle of DPR (design pressure ratio)=96 considering actual flight conditions were conducted to evaluate its performance. Drastic decreases in thrust efficiency coefficient were observed at transonic flight condition. The effect of intentionally setting the nozzle DPR low was also investigated, and it was found that using nozzle of DPR=19 in the same flight conditions, the transonic thrust efficiency decrease remarkably reduced compared to the DPR=96 nozzle. Furthermore, only 5% decrease in thrust efficiency occurred at cruising condition even though its nozzle size (exit area) is less than 1/3 of the DPR=96 nozzle. Researches were also made to seek for means to further improve the thrust performance during the transonic flight by modifying the nozzle's cowl geometry configuration. Here, thrust efficiency of the DPR=19 nozzle at transonic flight improved up to 2.6% by providing an extended cowl with a slit near the nozzle throat.

Original languageEnglish
Title of host publicationCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
Pages245-253
Number of pages9
Publication statusPublished - 2007 Jul 2
Event45th AIAA Aerospace Sciences Meeting 2007 - Reno, NV, United States
Duration: 2007 Jan 82007 Jan 11

Publication series

NameCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
Volume1

Other

Other45th AIAA Aerospace Sciences Meeting 2007
CountryUnited States
CityReno, NV
Period07/1/807/1/11

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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  • Cite this

    Miyamoto, H., Matsuo, A., Kojima, T., & Taguchi, H. (2007). Numerical analysis of rectangular plug nozzle considering practical geometry and flow conditions. In Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting (pp. 245-253). (Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting; Vol. 1).