Aircraft gas turbine, has closure element arranged in air discharging channel and made of material e.g. copper, which deforms during exceeding of predetermined temperature, so that closure element sets external function

摘要

The turbine has a bearing arrangement (1) formed with a bearing chamber (3) filled with oil. An air supply channel (4) and an air discharging channel (5) enable supply and discharge of air for washing the bearing chamber. A closure element (6) is arranged in the air discharging channel, and closes the air discharging channel. The closure element is made of a material e.g. copper, which deforms during exceeding of predetermined temperature, so that the closure element sets external function, where the predetermined temperature is greater than 950 degree centigrade.