1. Implementation of Active Flow Control using Microjets on an RC Aircraft Dan Drake Phil Kreth Hussein Nabulsi Matt Tubtim Faculty Advisor: Dr. Farrukh Alvi Sponsor: Dr. Gregg Abate (Eglin AFB) 04.03.2008

2. Background Flow Separation 04.03.2008 Flow separated ~16° AOAReattached flow ~ 5 psig @ microjets

3. Motivation 04.03.2008 Baseline flow ONERA D Airfoil Span = 1 m, Chord = 0.35 U  = 45 m/s,  = 14  Control applied to 40% of span Flow with Control *Conducted at the Université de Poitiers, France Images & Video Courtesy of Dr. Farrukh Alvi

4. Motivation 04.03.2008 Images Courtesy of Dr. Farrukh Alvi 20-30% gain in C L Control applied to 40% of span

5. Needs Assessment Implement microjets on RC Airplane Remotely activate each wing Run time should be 30 secs or more Delay stall and improve lift Use off-the-shelf items only Budget = $1,500 00 04.03.2008

6. Wind Tunnel Testing 04.03.2008 Paint Testing ◦ Uncertainty in interpretation Smoke Wire ◦ Minimum WT speed too high Tuft Testing ◦ Success

7. Flow Reattachment Video 04.03.2008

8. Air Supply Method

10. Performance Measurements

11. Final Design Schematic 04.03.2008

12. Actual Design 04.03.2008

13. Final Design Components Overhead View Close-up view: Tank Regulator Valves 04.03.2008

14. High Pressure Tank Location 04.03.2008

15. Shielding for High Pressure Cylinder 04.03.2008

16. Pressure Manifolds and Microjets in Wing to microjets from valves 04.03.2008

17. Added Weight: 10 lbs Total Weight: 14 lbs Budget & Weight 04.03.2008

18. Test Plan Video aircraft on ground ◦ Show all systems in working order Flight testing, no control Flight testing, with control ◦ Acquire video from on-board camera 04.03.2008

19. Flight Test Goals Don’t crash! Demonstrate reattachment 04.03.2008

20. Flight Test Video 04.03.2008

21. Outcomes & Conclusions System was successful ◦ No “bad landings” ◦ Microjets remotely activated ◦ Reattached flow demonstrated Proposed Future Work ◦ Demonstrate Roll Control ◦ Measure C L and C D improvements 04.03.2008

22. Special Thanks Eglin Air Force Base ◦ Dr. Gregg Abate AAPL – FAMU-FSU ◦ Dr. Farrukh Alvi Mechanical Engineering Dept ◦ Dr. Cesar Luongo ◦ Mr. Jon Cloos 04.03.2008

23. Questions and Comments 04.03.2008