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Aeroengine ventilation system

  • US 7,861,513 B2
  • Filed: 04/13/2007
  • Issued: 01/04/2011
  • Est. Priority Date: 04/20/2006
  • Status: Expired due to Fees
First Claim
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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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