Gas-Turbine Powerplants for Two-Phase Hydropropulsion 



06 

 04 

 Q2 



20 30 



VL (m/s) 



iO 



SO 



Fig. 18 - Variation of the 

 propulsive efficiency 1]^ 

 for water jet (vj/ = 0.9, S.p.) 



2,0 

 7,8 



1,6 



1A 



a< 



KT^ 2 3*661 2 3 < 6 t 10 



Xi 



Fig. 19 - Variation of a 

 with Xj, for a hydrojec- 

 tor (h; = 0.9, a. p.) 



20, and 21, a, c^ and T7p as functions of k-^ have been diagrammed for an 

 exhaust-gas ejector and for ^ = 0.9. 



Finally, to evaluate the overall efficiency v^, the solution of the power- 

 plant equations will be necessary. It is possible to make the following remarks 

 about the pure propulsive performances: 



1131 



