F,6 • CONE SOLUTION 



reduced by means of a simple transformation to equations of the same 

 form as those for a flat plate. As a consequence, the local coefficient of 

 heat transfer for the cone is -\/3 times the corresponding coefficient for 

 the flat plate. In other words, since the local heat transfer coefficient 



0.8 



0.7 



> 



<a 

 +- 



in 



0.6 



0.5 



0.4 



0.3 



2 4 6 8 10 12 14 



Free stream Mach number Mm 



16 



Fig. F,6a. Local heat transfer coefficient for laminar boundary 

 layers on insulated cones in free flight. T^ = 400°R. 



0.86 



0.85 



Tins 



0.84 



0.83 



0.82 



0.81 



2 4 6 8 10 12 



Free stream Mach number Mc 



14 



16 



Fig. F,6b. Recovery factor for laminar boundary layers on 

 insulated cones in free flight. T^ = 400°R. 



varies inversely with the square root of the Reynolds number, the coef- 

 ficient for the cone can be obtained by dividing the cone Reynolds num- 

 ber by 3 and using flat plate results. Furthermore, there follows, as a 

 result of the geometry, that the mean coefficient of heat transfer for the 



( 363 > 



