Figure 9 - Amplifier Unit Built for He-wlett-Packard Pulse Generator 



Model 214-A 37 



Figure 10- Two Sylvania "Sun Guns" Mounted in Drained Test Section . . 38 



Figure 11- View Parallel to Stream Velocity (Looking Upstream) of One 



Lighting Scheme (a) and an Improved Setup (b) ...... . 39 



Figure 12- Two General Radio Strobotacs Mounted in Hatch of Test 



Section .......................... kO 



Figure 13- Cylindrical Bodies .................... i+l 



Figure ik- Streakline Pattern about a Foil Shape, Aspect Ratio is 10:1 



(Freestream velocity is 1 fps) . k2 



Figure I5- Streakline Patterns of the Flow about a 1-Inch Diameter 



Cylinder (Freestream velocity is 1 fps) .......... k3 



Figure I6- Visual Determination of the Position of the Separation 



Point (Freestream velocity is 3 fps) ........... hk 



Figure I7- Typical Bubble Patterns behind 10:1 Foil Shape Illustrating 



Deviation from Two -Dimensionality along Foil Span Length . ^5 



