Zero heat transfer, T^/T^ = 3.31 



Cooling, T„/T,- 2.08 



Cooling, VT^^ 1.79 



4 8 12 16 



Distance from tip of cone, inches 



20 



Plate F,17. Schlieren photographs showing delay of transition on a smooth 

 10° cone by surface cooling. M^ = 3.65, Ree/in. = 0.50 X 10 «. 



