Flow and aero-optics around a turret. Part 1. Open loop flow control

Marlyn Y. Andino, Ryan D. Wallace, Mark N. Glauser, Ryan F. Schmit, James H. Myatt, R. Chris Camphouse

Research output: Chapter in Book/Entry/PoemConference contribution

1 Scopus citations


A large percentage of the losses in performance and effectiveness of airborne optical systems are caused by turbulence. In particular, separated turbulent flow phenomena is present in several aero-optics applications. In an effort to reduce the adverse effects of turbulence in airborne optical systems, we are exploring the use of both open and closed-loop flow control over a cylindrical turret. A series of experiments were performed at Reynolds number of 2; 000; 000 that corresponds to a Mach number of 0:3 using a half scale test model. The 3D turret contained an actuation system that consists of 17 synthetic jets placed upstream from the leading edge of the aperture. Multiple actuation cases were tested to evaluate the effects of active flow control over the aperture area and their control authority. Simultaneous surface pressure and velocity measurements were acquired in the separated region for both with and without flow control. Pressure results from the open loop test presents reduction of 10 percent in the root-mean-square values when compare to the baseline case. Two-point statistics showed that the forcing is driving the flow towards homogeneity across the surface of turret.

Original languageEnglish (US)
Title of host publication39th AIAA Plasmadynamics and Lasers Conference
StatePublished - 2008
Event39th AIAA Plasmadynamics and Lasers Conference - Seattle, WA, United States
Duration: Jun 23 2008Jun 26 2008

Publication series

Name39th AIAA Plasmadynamics and Lasers Conference


Other39th AIAA Plasmadynamics and Lasers Conference
Country/TerritoryUnited States
CitySeattle, WA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics


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