Hypersonic crossflow instability

Travis S. Kocian, Alexander J. Moyes, Helen L. Reed, Stuart A. Craig, William S. Saric, Steven P. Schneider, Joshua B. Edelman

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


Under the auspices of NATO STO AVT-240: “Hypersonic Boundary-Layer Transition Prediction”, this paper describes the results of close collaborations among the authors toward the fundamental understanding and modeling of the instabilities associated with three-dimensional boundary layers in hypersonic flight. Specifically, the focus is directed toward the crossflow instability. A common straight circular cone geometry is analyzed for M 5.91-6 and Re 0 9.8-10.1 × 106 ∕m from both a computational and experimental perspective using methods that are unique to each facility and methodology. Disturbance wavelength and trajectory, surface roughness, and the use of quiet wind tunnels are just a few items found to be key factors in the investigation of the crossflow instability. Quiet tunnels allow experiments to be performed in a disturbance environment comparable to that expected from flight, and the combination of different facilities and computations displays a comprehensive analysis that would be unobtainable from any individual approach alone.

Original languageEnglish (US)
Pages (from-to)432-446
Number of pages15
JournalJournal of Spacecraft and Rockets
Issue number2
StatePublished - 2019

ASJC Scopus subject areas

  • Aerospace Engineering
  • Space and Planetary Science


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