초록 ▼

The present invention discloses means and method for modulating the bypass flow in a mixed flow, variable cycle gas turbine engine. The engine includes means to vary the bypass flow and includes an augmentor and liner with coolant supplied by a portion of the bypass flow. The bypass flow pressure is

The present invention discloses means and method for modulating the bypass flow in a mixed flow, variable cycle gas turbine engine. The engine includes means to vary the bypass flow and includes an augmentor and liner with coolant supplied by a portion of the bypass flow. The bypass flow pressure is modulated by sensing the pressure of the liner coolant and the pressure in the augmentor and varying the flow pressure as a function of P1, P2, or both.

대표청구항 ▼

A gas turbine engine comprising: a core engine for generating a gas flow; a front fan for pressurizing air; an aft fan for further pressurizing air discharged from the front fan; a bypass duct including a first bypass duct inlet which directs a first bypass airflow around the aft fan into said bypas

A gas turbine engine comprising: a core engine for generating a gas flow; a front fan for pressurizing air; an aft fan for further pressurizing air discharged from the front fan; a bypass duct including a first bypass duct inlet which directs a first bypass airflow around the aft fan into said bypass duct, a second bypass duct inlet which directs a second bypass airflow from the aft fan into said bypass duct; an augmentor aft of said core engine; an exhaust duct surrounding said augmentor; a cooling liner positioned within said exhaust duct so as to form a cooling plenum therebetween; means for receiving a portion of said bypass flow into said plenum; means for mixing said bypass flow with said gas flow; a first sensing means for sensing a control pressure in said exhaust duct; and a varying means for modulating the flow pressure in said bypass duct as a function of at least said control pressure.