Passive ventilation system for tail cone zone

A tail cone ventilation system comprising:

• a gas turbine engine aft portion;
• a tail cone case attached to the gas turbine aft portion;
• the tail cone case defining a tail cone interior and a tail cone exterior, the tail cone having a forward portion and an aft portion separated axially along a tail cone axis;
• a distribution manifold located within the tail cone interior proximate the forward portion, wherein the distribution manifold comprises nozzles arranged radially around the axis, the nozzles configured to direct a cooling air over at least one electronic component and along an inner surface of the tail cone case;
• an air inlet fluidly coupled with the distribution manifold through ducting, the air inlet located externally from the tail cone interior;
• and
• a tail cone discharge located proximate the tail cone aft portion, the tail cone discharge being fluidly coupled with the distribution manifold.

A process for cooling a tail cone interior comprising:

• attaching a tail cone case to a gas turbine engine aft portion, the tail cone case defining a tail cone interior and a tail cone exterior, the tail cone having a forward portion and an aft portion separated axially along a tail cone axis;
• locating a distribution manifold within the tail cone interior proximate the forward portion;
• forming nozzles on the distribution manifold, the nozzles arranged radially around the tail cone axis;
• configuring the nozzles to direct a cooling air over at least one electronic component within the tail cone case;
• configuring the nozzles to direct a cooling air along an inner surface of the tail cone case;
• fluidly coupling an air inlet with the distribution manifold through ducting, the air inlet located externally from the tail cone interior;
• locating a tail cone discharge proximate the tail cone aft portion;
• and
• fluidly coupling the tail cone discharge with the distribution manifold.