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

Hidemasa Miyamoto, Akiko Matsuo, Takayuki Kojima, Hideyuki Taguchi

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルCollection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
ページ245-253
ページ数9
出版ステータスPublished - 2007 7 2
イベント45th AIAA Aerospace Sciences Meeting 2007 - Reno, NV, United States
継続期間: 2007 1 82007 1 11

出版物シリーズ

名前Collection of Technical Papers - 45th AIAA Aerospace Sciences Meeting
1

Other

Other45th AIAA Aerospace Sciences Meeting 2007
国/地域United States
CityReno, NV
Period07/1/807/1/11

ASJC Scopus subject areas

  • 宇宙惑星科学
  • 航空宇宙工学

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