Inlet starting of high-contraction axisymmetric scramjets

Hideaki Ogawa, Alex L. Grainger, Russell R. Boyce

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

5 被引用数 (Scopus)

抄録

Reliable in-flight starting of the inlet is of critical importance for the successful operation of scramjet engines, particularly axisymmetric configurations with high contraction inlets. The present research is undertaken to examine the capability of various inlet starting methods based on two principles: unsteady flow effects and variable geometries. Timeaccurate viscous computations have been performed to investigate the transitional flowfields introduced by a variety of methods that are applicable to axisymmetric geometries. Parametric studies have been conducted for instantaneous rupture of conical diaphragms and addition of bleed slots, which induce highly unsteady flow phenomena. Several methods employing variable inlet geometries have been tested for the latter principle, including opening doors, rocket plugs and sliding doors (or diaphragm erosion). Successful inlet starting has been achieved as a result of unsteady transition induced by diaphragm rupture and quasi-steady transition due to the sliding door opening process. In particular, a bleed addition to the diaphragm rupture method has been found to be highly effective and pronounced flow stability has been observed in the sliding door process.

本文言語英語
ホスト出版物のタイトル16th AIAA/DLR/DGLR International Space Planes and Hypersonic Systems and Technologies Conference
出版ステータス出版済み - 2009
外部発表はい
イベント16th AIAA/DLR/DGLR International Space Planes and Hypersonic Systems and Technologies Conference - Bremen, ドイツ
継続期間: 10 19 200910 22 2009

出版物シリーズ

名前16th AIAA/DLR/DGLR International Space Planes and Hypersonic Systems and Technologies Conference

会議

会議16th AIAA/DLR/DGLR International Space Planes and Hypersonic Systems and Technologies Conference
Countryドイツ
CityBremen
Period10/19/0910/22/09

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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