with the flow being modulated by control valve 24 driven by actuator 26 fast operating valves 28 and 30 may be closed for the purpose of tripping fuel by actuators 32 and 34 a power turbine 36 is located downstream of the low pressure turbine 14 and is direct connected to a power generator 38 waste heat steam generator 40 receives the exit gas flow from the gas turbine for the generation of additional power referring to fig2 high pressure rotor speed control 42 sends a signal through line 44 indicative of fuel demand power turbine control 46 sends a signal also indicative of fuel demand through control line 48 exit gas temperature control 50 sends a similar signal through line 52 the acceleration limit control 54 sends a fuel demand signal through line 56 while low pressure rotor speed control 58 sends such a signal through control line 60 these signals are all sent to low signal select 62 where the low signal is selected and sent through control line 64 to high signal select 66 also entering high signal select 66 is a signal from minimum flow schedule 68 through line 70 and a signal from deceleration control 72 through line 74 the selected high signal indicative of fuel demand is sent through control line 76 emergency shutdown indicated by logic box 78 may be initiated by manual trip line 80 or control trip line 82 which receives signals from the various control loops indicated to an extreme condition dictating a trip since the gas turbine is.