Patent ID: 9708069
Date: 2017-07-18
CPC Classifications: B64C,B64D,F01P,Y02T

Claim:
1. A ram air system for use with a bay of an aircraft, the aircraft includes a fuselage skin having an exterior wall defining an interior volume of the bay, the ram air system comprising: a ram air duct at least partially enclosed within the interior volume, the ram air duct comprising an outlet configured to discharge an exhaust airflow to an exterior environment at a first temperature; and an aperture defined in at least one of said exterior wall and said ram air duct, the aperture configured to provide flow communication directly between the bay interior volume and the exhaust airflow, said aperture configured to discharge cooling air airflow to the exterior environment from the interior volume such that a boundary layer of cooling air is formed between the exhaust airflow and said exterior wall of the aircraft downstream of said outlet, the boundary layer being at a second temperature that is lower than the first temperature of the exhaust airflow.