Why does gas turbines need lubrication?

Question

simeple, why does an aircraft gas turbine engine need lubrication? what are the advantages?

Answer 1

take any of the answers below there pretty much it

Answer 2

Gas turbines need lubrication because the compressor and the turbines are mounted on a central shaft which passes through the engine as this shaft rotates at 30,000 +rpm serious lubrication is required. The advantages are that the central shaft is well balanced so less strain and the main one being that the oil does not come into contact with the combustion process so in fact the oil doesn't degrade.

Answer 3

If they didn't then the compressor shaft would seize in flight.

Answer 4

Because it's rotating at a high speed (>10,000 rpm), and would rapidly seize without lubrication.

The advantage is that the engine doesn't destroy itself.

Answer 5

Because the turbine like any wheel has bearings that need lubricating from time to time.

Answer 6

The principal purposes of lubrication are to reduce wear, reduce friction, keep systems clean, remove heat, and prevent rust. The elements of the gas turbines that need lubrication include plain and rolling bearing, thrust bearings, gears, couplings and contact type seals...for more details you may refer to the site mentioned below.

Answer 7

And synthetic oil is used.

Answer 8

the rotor shaft runs on bearings which require lubrication