Aeroengine ventilation system
First Claim
1. A gas turbine engine comprising a ventilation zone defined between a core engine casing and a core fairing and having a discharge nozzle, the engine further comprises a pre-cooler having a variable flow of coolant therethrough and which coolant being ducted into the ventilation zone wherein an additional ventilation zone outlet system is provided and comprises a variable area outlet, wherein the area of the variable area outlet is controlled by an actuator.
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Accused Products
Abstract
A gas turbine engine comprising a ventilation zone defined between a core engine casing and a core fairing and having a discharge nozzle, the engine further comprises a pre-cooler having a flow of coolant therethrough and which coolant being ducted into the ventilation zone wherein an additional ventilation zone outlet system is provided and comprises a variable area outlet.
31 Citations
18 Claims
- 1. A gas turbine engine comprising a ventilation zone defined between a core engine casing and a core fairing and having a discharge nozzle, the engine further comprises a pre-cooler having a variable flow of coolant therethrough and which coolant being ducted into the ventilation zone wherein an additional ventilation zone outlet system is provided and comprises a variable area outlet, wherein the area of the variable area outlet is controlled by an actuator.
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9. A method of operating a gas turbine engine comprising a ventilation zone defined between a core engine casing and a core fairing and having a discharge nozzle, the engine further comprises a pre-cooler having a variable flow of coolant therethrough and which coolant being ducted into the ventilation zone characterized in that an additional ventilation zone outlet system is provided and comprises a variable area outlet, wherein the area of the variable area outlet is controlled by an actuator;
- the method comprising the step of adjusting the variable area outlet dependent on the amount of coolant being ducted into the ventilation zone.
- View Dependent Claims (10, 11, 12, 16, 17, 18)
Specification