Two Years on Deturbulated Wings James E. Hendrix– 1/2/07

1. Two Years on Deturbulated WingsJames E. Hendrix– 1/2/07

2. Performance Measurement Until deturbulators operate more consistently, individual flights must be analyzed to see their actual potential. Improvements of 25% have been measured in six flights. The upper limit is unknown!

3. Johnson & Hendrix Measurements Green: Johnson day 1 (4 flights) Blue: Johnson day 2 (2 flights) Orange: Hendrix (2 flights)

4. Lift Change Affects Pitch • Increased lift => lower AOA at same airspeed • Witnessed on tow • Sometimes changes on tow Lift Change Affects Trim • Center of lift moves aft • Less forward trim needed • Forward trim speed moves from 65 to 85 kts

5. Lift Change – Wing Bending • Top: 30 degree bank, clean wing • Bottom: 45 degree bank, inboard 14’ deturbulated • Think about it!

6. Polar Change – Final Glide 7/1/2006 - 13 nm glide, average airspeed of 85 kts, 17 kt headwind, 260 fpm average sink rate, 25% improvement.

7. Parallel Flight – ASW-28 3/19/2005 – Parallel Flight with ASW-28 at 80 kts.

8. Water Purging – Virga 9/27/2006 – Released at 10,000’ in virga. Took data points in order shown.

9. Dr. Sumon Sinha