Abstract: The invention relates to an aircraft component, in particular an aircraft gas turbine (10), having a face (1) which can be flowed over or around by ambient air (L), in particular a housing (1) of the aircraft gas turbine (10) and a heat exchange apparatus (2) having at least one heat exchange face (3), characterized in that the at least one heat exchange face (3) is arranged on or in the face (1) in such a manner that it is in contact with the ambient air (L). The invention further relates to a method for operating heat exchange apparatuses.

Abstract: A cooling system in a gas turbine, in particular in an aircraft engine, with means for generating an air—cooling-fluid mixture flow and flow guiding means for directing the air—cooling-fluid mixture flow to at least one hot target surface in the gas turbine, with the at least one hot target surface getting into contact with the air—cooling-fluid flow to at least partially evaporate the cooling-fluid in the air—cooling-fluid mixture flow. The invention also related to a method for cooling a hot target surface.

Abstract: A flow guiding system for a rotary combustion engine, in particular an aircraft jet engine. The flow guiding system comprises a bypass region positioned radially around a core region, a flow scoop device for guiding a first airflow from the bypass region, at least one flow guiding device for decoupling the flow regime in a region containing a flammable fluid from a flow regime in a region with tip clearance control by at least partially guiding at least one airflow divided from the first airflow, a second airflow directed into the region containing flammable fluid, and/or a third airflow directed into a region away from the region containing flammable fluid.

Abstract: A flow guiding system for a rotary combustion engine, in particular an aircraft jet engine. The flow guiding system comprises a bypass region positioned radially around a core region, a flow scoop device for guiding a first airflow from the bypass region, at least one flow guiding device for decoupling the flow regime in a region containing a flammable fluid from a flow regime in a region with tip clearance control by at least partially guiding at least one airflow divided from the first airflow, a second airflow directed into the region containing flammable fluid, and/or a third airflow directed into a region away from the region containing flammable fluid.