Originally Posted by
xjsftsdghu
Jeez. I've never seen a turbine with an oil port.
Full size jet turbines have a closed cycle lubrification system .They have a oil port too.
The JPX and Turbomin had a pressurized oil port, in wich the oil is directed to the bearings by the "cold" air pressure taken from the turbine case. After lubricating the bearings the excess oil is burnt away with the turbine hot gases,
This system is not bad, as modern turbines with its mixed oil / fuel solution burn most of it expensive synthetic oil without lubrificating anything. This system only takes more space in the airframe and needs extra attention and maintenance for working properly.