Hypersonic Stability Predictions
Abstract
The primary focus of the proposed 3-year effort will be on understanding and modeling of the transition process on a straight slender cone with a single fin. The effort will examine the nonlinear interaction of modes including Mack s second mode, corner-flow instabilities, attachment-line instabilities/leading-edge contamination, crossflow, and so forth, all coupled with oblique shocks. Interactions with Professor Steven Schneider s experimental group at Purdue will be integral to this work. Understanding the aerothermodynamics of gliding hypersonic vehicles is of interest to the Department of Defense. These vehicles are slender geometries with highly swept fins, featuring highly-swept-shock/boundary-layer interactions and corner flows associated with the intersection of the fins and the body. Very little is known about laminar-to-turbulent transition under these conditions, yet it is critical because of the effect on heat transfer and boundary-layer separation. Expected will be the nonlinear interaction of modes to include Mack’s second mode, corner-flow instabilities, attachment-line instabilities/leading-edge contamination, crossflow, and so forth, coupled with oblique shocks. Using the model of a straight slender cone with a single fin, the primary focus of the proposed 3-year effort will be on understanding and modeling of the transition process. Interactions with Professor Steven Schneider’s experimental group at Purdue will be integral to this work.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 23, 2016
- Source ID
- N000141612434
Entities
People
- Helen Reed
Organizations
- Office of Naval Research
- Texas Engineering Experiment Station
- United States Navy