Pressure history at the thrust wall of a simplified pulse detonation engine

Takuma Endo, Jiro Kasahara, Akiko Matsuo, Kazuaki Inaba, Shigeru Sato, Toshi Fujiwara

Research output: Contribution to journalReview articlepeer-review

129 Citations (Scopus)


Gas dynamics in a simplified pulse detonation engine (PDE) was theoretically analyzed. A PDE was simplified as a straight tube with a fixed cross section. One end of the tube was closed, namely, this end was the thrust wall, and the other end was open. A detonation wave was initiated at the closed end and simultaneously started to propagate toward the open end. When the detonation wave broke out from the open end, a rarefaction wave started to propagate from the open end toward the closed end. This rarefaction wave was reflected by the closed end. By considering this rarefaction wave to be self-similar in the analysis of the interference between this rarefaction wave and its reflection from the closed end, we analytically formulated the decay portion of the pressure history at the closed end (thrust wall) without any empirical parameters. By integrating the obtained pressure history at the thrust wall with respect to time, important performance parameters of a PDE were also formulated. The obtained formulas were compared with numerical and experimental results and agreed with them very well.

Original languageEnglish
Pages (from-to)1921-1930
Number of pages10
JournalAIAA journal
Issue number9
Publication statusPublished - 2004 Sept

ASJC Scopus subject areas

  • Aerospace Engineering


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