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Opportunity at Air Force Research Laboratory (AFRL)

Aerodynamic Response to Deforming Surfaces in High-Speed Flow

Location

Aerospace Systems Directorate, RQ/High Speed Systems Division

RO# Location
13.30.13.C0700 Arnold AFB, TN 373894000

Advisers

name email phone
Scott Jacob Peltier scott.peltier.5@us.af.mil 931-454-5692

Description

The aerodynamic performance of high-speed flight systems may be influenced by the condition of the vehicle surface, resulting in potential changes to control surface effectiveness, flowpath performance, and overall drag. Since the structural components of these vehicles will experience extreme thermal/mechanical/acoustic loading, understanding the aerodynamic sensitivity to structural deformation and damage is critical to accurately predicting vehicle performance. This research is focused on improving our knowledge of high-speed aerodynamic behavior over irregular surfaces through experimental exploration, including deformation induced by aeroelastic and aerothermoelastic behavior. Insight is sought into the energy exchange mechanisms between deforming surfaces (e.g. panel flutter) and the surrounding flowfield, with the ultimate goal of identifying the sensitivity of the supersonic fluid dynamics to surface motion. An AFRL-operated 12”x12” variable-Mach number (1.5 to 5.0) wind tunnel is available to address these challenges, along with a suite of non-intrusive and high-speed measurement techniques. In-house diagnostics include (but aren’t limited to) tomographic particle image velocimetry (PIV), pressure sensitive paint (PSP), high-speed schlieren imaging, and kHz-rate digital image correlation (DIC). Lab space is available for further development of advanced diagnostics, as well as benchtop evaluation of novel test techniques.

PA Case number AFRL-2020-0475

Keywords:
High-speed flows; Boundary layer; Fluid dynamics; Surface deformation; Advanced laser diagnostics; Turbulence; Structures; Aeroelasticity; Flutter; Fluid-structure interactions

Eligibility

Citizenship:  Open to U.S. citizens
Level:  Open to Postdoctoral and Senior applicants

Stipend

Base Stipend Travel Allotment Supplementation
$76,542.00 $4,000.00

$3,000 Supplement for Doctorates in Engineering & Computer Science

Experience Supplement:
Postdoctoral and Senior Associates will receive an appropriately higher stipend based on the number of years of experience past their PhD.

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