Turbofan:Bearings: Difference between revisions
(page beginning) |
|||
| Line 7: | Line 7: | ||
==Cooling with lubricating oil== | ==Cooling with lubricating oil== | ||
==Oil displacement without pumping== | ==Oil displacement without external pumping== | ||
[http://en.wikipedia.org/wiki/Screw_conveyor Screw pumping] will be used as a way to move the oil through the engine, i.e. parts that have to be lubricated and cooled. the work of the turbine will thus directly drive the oil pumping without requiring external accessories. However, cooling the oil may require external hardware, and sealing is absolutely required. | [http://en.wikipedia.org/wiki/Screw_conveyor Screw pumping] will be used as a way to move the oil through the engine, i.e. parts that have to be lubricated and cooled. the work of the turbine will thus directly drive the oil pumping without requiring external accessories. However, cooling the oil may require external hardware, and sealing is absolutely required. | ||
Revision as of 01:11, 28 July 2011
Bearings and cooling
Rotational speed achieved by the engine will be around 40000rpm. At this speed, regular ball bearings may overheat or suffer from a too fast wear. In real engines, bearings are constantly lubricated by an oil bath, which poses problems with regards to oil leaks in other parts of the engine. Seals are thus places close to bearings to prevent leaks, generally carbon leaks. Accessories like oil pumps, pipes, fixations, filters and so on are also required.
Bearings
Cooling with lubricating oil
Oil displacement without external pumping
Screw pumping will be used as a way to move the oil through the engine, i.e. parts that have to be lubricated and cooled. the work of the turbine will thus directly drive the oil pumping without requiring external accessories. However, cooling the oil may require external hardware, and sealing is absolutely required.
