Plasma Control of Separated Flows on Bodies of Revolution at High Angles of Attack
Abstract
This report results from a contract tasking Institute of Theoretical and Applied Mechanics as follows: This proposal deals with surface discharge plasmas and other plasma devices to quench stall-slip departure due to 1) asymmetric vortex shedding on conical body nose tips, and 2) augment directional control/authority. In spite of the extensive work in this area, limited understanding of the underlying basic physical processes near body nose tips as they pertain to symmetry-breaking bifurcations still exist. These deficiencies are evident in the scope of previous experimental, theoretical and CFD studies. It is proposed herein to study and assess the impact of using plasmas on the hydrodynamic stability of key flow singular points. The effort will encompass wind tunnel testing, theoretical analysis, development of prediction methods, and evaluation of potential control techniques. It is envisioned that an important spin-off of this effort will be new yaw departure avoidance and control devices based on high-frequency surface discharges. The team of researchers is well positioned to address this problem. Scientists at the Moscow Institute of Physics and Technology (MIPT) have experience in the flow stability and boundary layer separation as well as the combined asymptotics and numerics needed to perform the theoretical and computational investigations of plasma aerodynamics. The Institute of Theoretical and Applied Mechanics in Novosibirsk (ITAM) will perform the wind tunnel testing. ITAM's expertise will add their unique capabilities regarding novel experimental techniques such as: spark discharge excitation procedures and special hot wire methods (weakly invasive and ideally suited to assess the boundary layer separation and vortex structure). In addition, Russian personnel expertise will give fresh insights into the attack on the asymmetric vortex problem and surface discharge mechanisms.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 2004
- Accession Number
- ADA433660
Entities
People
- Boris Y. Zanine
Organizations
- Russian Academy of Sciences