The Boeing Company

Quy Lam

Thomas R Hasenoehrl

Raymond H Horstman

Charles Edward Kusuda

J Everett Groat

Dennis D Chung

Luc Tu Kha

A forward in flight entertainment system (IFE) which allows air to be directed to and exhausted from the IFE equipment in isolation from the cabin conditioned air. Further, potential IFE generated smoke may be kept isolated from the cabin air. The forward IFE equipment is located in forward sections of the aircraft system switching from ground to air mode is accomplished through air/ground signal responsive to landing gear truck tilt. Once the air/ground transition from ground mode to air mode has occurred, ventilation valves and will be closed and the heated air will be exhausted overboard by forward IFE cooling overboard valve whose overboard flow increases with altitude and cabin to ambient pressure differential.

Forward in flight (IFE) entertainment cooling system

An alternate ventilation system for an aircraft having a body structure and a plurality of electronic devices is provided. The ventilation system includes a ventilation conduit, an inboard supply valve, a first outflow valve and a second outflow valve. The ventilation conduit is adapted to be coupled to the body structure for directing a ventilation flow of air along a predetermined flow path. The inboard supply valve is coupled to the ventilation conduit and adapted for drawing air from the cabin into the ventilation conduit when positioned in the open condition. The first outflow valve is coupled to the ventilation conduit and adapted for discharging at least a portion of the ventilation flow from the ventilation conduit to a point outside the body structure when positioned in the open condition. The second outflow valve is coupled to the body structure and operable in a first mode and a second mode. The first mode is adapted to selectively enable a discharge airflow from the cabin and the second mode is adapted to selectively enable an input airflow into the cabin. A method for ventilating an aircraft is also provided herein.

Alternate ventilation system

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Mukilteo, WA, United States of America

Quy Lam