;: . ■;. '. I s ■:', . S chmi e che n 



L length, 3.1 



m mass-specific momenta, 3.1 



M momentum flows, 2. 



P power, 2. 



PR production in general, 2. 



Q volume flow, 2. 



r energy velocities, 3.1 



R resistance, net thrust, 5.1 



s stresses, 2. 



S surfaces, 2. 



t time, 2., thrust deduction, 5.1 "" 



T thrust, 2. 



i> local velocities, 2. 



V volume velocities, 3.1 



V speed, 2. : '-"-.^ >7./ 

 w wake fraction, 5.1 



a area ratio, 4.1 



e energy ratios, 3.2 



^ nondimensional pressure drop, 4.2 



7) efficiencies, 3. 



7]* effective efficiencies, 5.2 



/Lt momentum ratios, 3.2 



V velocity ratio, 4.2 

 P density, 2. 



1102 



