m , m , m 



m 



Gas-Turbine Powerplants For Two-Phase Hydropropulsion 



k specific heat ratio ; c ." • 



Kj coefficient [Eq. (15)j 



K^, K3 coefficients [Eq. (37) j . • 



mass flow rate, air, gas, water (kg s/m) 

 1/k ■• '" ' ■■' 



M pseudo-Mach number of the two- phase mixture 



p pressure (kg/m^) 



Pg atmospheric pressure 



s thrust (net of internal losses) (kg) 



T temperature (°K) 



V velocity (m/s) • •' 



v^ reference velocity [={2p^/S^/p^)^'^] 



v„ advance velocity of the vehicle 



z depth (positive downwards) (m) 



ttj, a^, ttj turbine flow rate drawing fractions (referred to liig) 



a^ turbine flow rate discharge fraction (referred to m^ ) 



a', a" turbine flow rate fuel fractions (referred to m^) 



/3 overall turbine compression ratio 



ySj H.P. turbine pressure ratio 



/Sj L.P- turbine pressure ratio 



/3f bypass compression ratio 



/3^ stream dimensionless dynamic pressure (=7jj V^y2gpg) 



^hi dimensionless chamber depth (=7h ^i /Pa) 



/3j^^ dimensionless water inlet depth (=7h^o /Pa) 



/3p dimensionless pump head (=7H^p/pa) 



/3-j^. local expansion ratio (= p- /p) 



1165 



