F=6.86*1(T-14*(Vmicl-28r8.40 R2=0.98 

 Sand Flux (g/cm2/min) 



10 



20 



30 



(V-V*) (cm/s) 



* Nozzle 



Power Threshold, F 



Figure 27. Flux measured with DUCK85 nozzle 



F=2.29*1CT-7*(Vmicl-28r4.62 R2=0.90 

 Sand Flux (g/cm2/min) 



10 



20 



30 



(V-V*) (cm/s) 



* Nozzle 



Power Threshold, F 



Figure 28. Flux measured with SUPERDUCK nozzle 



50 



61 



