Gas -Turbine Powerplants For Two-Phase Hydropropulsion 

 '■ 1 



Fig. 7 - Qualitative variation of the discharge pseudo- 

 Mach number M^ with chamber volumic flow ratio X^ 



In Fig. (8), v^ is represented for the aligned 

 propulsor as a function of /3p, together with the 

 corresponding pseudo-Mach number M^^; in Fig. 

 (9), the limit pseudo-Mach numbers M', M", M" ' 

 are shown as a function of v„ for some values of 

 /3p, while in Fig. (10) the same has been done for 

 A.- (corresponding to A = 0). All these functions 

 have been calculated for k = 1.35 (exhaust gas) 

 z^ = zj = 1 m, <f = 0.2, and = 0.9 (these val- 

 ues will be discussed later), while in Fig. (9) the 

 effect of changing i// to ^ = 0.6 is shown. 



From Eq. (11) one can deduce the cross sec- 

 tion ratio A/A„: 



Fig. 8 - Variation of 

 the transition velocity 

 and discharge pseudo- 

 Mach number v^^ and 

 M . with 3„ 



A 



aZ 



Ph 



P - Pa 



= I + k 



Ao 



Ph 



p. - n . 



= 1 + X. 



and therefore 



A 



A~ 



Ah Pi 



P - P. 



u„ 1 + x„ 



1119 



