Longitudinal combustion instabilities in ramjet engines identification of acoustic modes

James E. Crump, Klaus C. Schadow, Vigor Yang, Fred E.C. Culic

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)


Longitudinal combustion instabilities in liquid-fueled ramjet engines have been investigated with attention focused on determination of the acoustic mode structures. Detailed pressure measurements, including both amplitude and phase, were made at ten positions spanning the length of the engine. The experimental data have been analyzed using two linear acoustic models. Four distinct modes were observed for various inlet/combustor combinations. These results help identify the mechanisms exciting low-frequency pressure oscillations in ramjet engines.

Original languageEnglish
Pages (from-to)105-109
Number of pages5
JournalJournal of Propulsion and Power
Issue number2
Publication statusPublished - 1986

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Fuel Technology
  • Mechanical Engineering
  • Space and Planetary Science


Dive into the research topics of 'Longitudinal combustion instabilities in ramjet engines identification of acoustic modes'. Together they form a unique fingerprint.

Cite this