Abstract
This work investigates the effect of two-dimensional surface deformations on hypersonic boundary-layer stability. The deformations are obtained from previous research and represent the characteristic response of integrated thermal protection system panels due to combined aerodynamic and thermal loading. Boundary-layer stability is assessed using linear stability theory and the parabolized stability equations for several different cases, such as deformation direction, deformation location, multiple deformations in series, structural boundary condition, surface temperature, the combined effect of Mach number and altitude, and deformation-mode shape. The broad set of results provides important insight into the conditions where thermomechanical compliance can promote, or even possibly delay, hypersonic boundary-layer transition.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2547-2558 |
| Number of pages | 12 |
| Journal | AIAA journal |
| Volume | 52 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 1 2014 |
Bibliographical note
Funding Information:This research was conducted with U.S. Government support, under and awarded by the U.S. Air Force Office of Scientific Research (AFOSR) through grant FA9550-11-1-0036, with John Schmisseur as Program Manager; by the U.S. Department of Defense through a National Defense Science and Engineering Graduate Fellowship; and through an allocation of computing time from the Ohio Super Computer Center. The authors greatly appreciate the assistance of Adam Culler in providing numerical data for the National Aero-Space Plane ramp panel study. The authors also acknowledge the invaluable technical insights of Roger Kimmel (Aerospace Systems Directorate, U.S. Air Force Research Laboratory) and the Aerospace Systems Directorate Structural Sciences Center, U.S. Air Force Research Laboratory, under the direction of Ravi Chona. Finally, the views and conclusions contained herein are those of the authors and should not be interpreted as necessarily representing the official policies or endorsements, either expressed or implied, of the AFOSR or the U.S. Government.
Publisher Copyright:
Copyright © 2014 by Z. Riley, J. McNamara, and H. Johnson. Published by the American Institute of Aeronautics and Astronautics, Inc.