TIMING LINES 0.10/-<^\ i 



sec. 1 - n 



1 1 



/?„= 8.4x105 



Laminar Flow 



f/= 1.2 knots 



t>^V' 



Mil 



/? =11.3x105 



\/:,; 



^/ 



i^j 



r-^ 



,.'-%^^'' 



'"V 



/■ 



Transitional Flow 



\^/"^^ 



^ 



'^\. 



"U^^^j^^..'- 



..^^^ 



\Vv,— 



1'^ 

 f/= 1.6 knots 



<--v 



^^J 



/?„=12.7xl05 



Transitional Flow 



J 



•/'^'^^/^v\ 



^^N« 



/?„= 14.1x105 



''V^S' 



/? =17.6x105 



'*^ij 



Transitional Flow 



\' 



V^.^ 



(7= 1.8 knots 



/^^-',^^/N. 



f/=2.0 knots 



v«vv 



./v" 



■''r; 



'+1. 



4 



"Hv^-v^'/- 



'ly'V", 



■-V, 



i I 



iM^'^.fi- 



i^,- 



Transitional Flow 



f/=2.5 knots 



ff„= 22.9x105 



A^^'.-^^v^■'V.^-^'-^^"__^^■"^,>.^.^^7^v,^y'**^vJ'''■v^^^^/. 



.-^^'./,>^\^/., 



\r-^''"^/\ 



>\i>, 



Turbulent Flow 



y=3.25 knots 



Figure 2 - Oscillogram Records from a Hot-wire Sensing Element 

 Showing Turbulence in a Boundary Layer 



These records show how the hot-wire sensing element gives qualitative detection of turbulence. 



