Jet Engine Air Oil Separator

Turbine engines are expensive and powerful. The Air Oil separators they use are also expensive and powerful. Let's have a look, shall we?

[Jujukungfu]

10 years of watching your videos good sir. Really appreciate the content

[hogger]

Another good one Agent J Zed! Your efforts on these videos are appreciated.

And congratulations on your trip to Oshkosh. This confirms U.S. Customs and Border Protection permitted you entry to the US of A.
And, the Canada Border Services actually allowed you to return… 😎

[DoktorBayerischeMotorenWerke]

It was called a "Draft tube" on cars that allowed the crankcase pressure and oil to vent down on to the ground...

[RHBTurbochargers]

Formula one engines use a miniature version of this type of air/oil separator on the nose of the crank. Beyond F1 this is only found on nose fed oiled crankshafts in racing.

[SkyhawkSteve]

Glad that you were able to attend Airventure again! I was there for a couple of days. Really enjoyed the RCAF aircraft! Hadn't seen a Lancaster before, and was my first time to see a Hawker Hurricane fly. As far as odd oil systems, the early A-4 Skyhawks used the Wright J65 engine. The engine sent the oil through the bearings, and then it was ported overboard! The A-4 was a very minimalist aircraft... so maybe it was done to keep weight down?? I worked on later Skyhawk versions with the J52 engine with a more typical oil system.

[ellnegro]

Hello sir I've been subscribed to you for years and it took me about 5 minutes to look you up I don't know why you're not coming up in my feed😮😮😮

[rogermason]

That early engine crankcase vent was called a "road draft tube"

[napalmholocaust]

In my experience; 1.5 pints an hour is similar to the oil consumption of a Lincoln Town car in combat configuration. It was under the purview of the Navy with the nautical trim of baby blue canvas.

[bkoczur]

Sorry to have missed you in OshKosh again. Glad you got to go!

[grahamj]

Hi, AgentJayZ!
Could I point you back in the direction of R-R's 'The Jet Engine' (5th Edition, 1996 reprint) for some useful diagrams?
On pages 70 and 71 are a couple of cutaway diagrams/illustrations of gearboxes with their C/F breathers clearly shown. On pages 74 and 75 are diagrams of Tyne and RB211(?) oil systems, again showing the C/F breathers.
On page 77, there is a cutaway illustration of a typical engine oil tank, which shows a de-aerator tray. The aerated oil 'froth' returning to the tank is piped onto this and, as it flows down into the tank, a large proportion of the air is released and is vented back to the gearbox, finally to be vented back to atmosphere via the C/F breather.
Finally, on page 81, there is a cutaway illustration of a C/F breather.

[WarblesOnALot]

G'day Jay !

Thanks mate, I greatly enjoyed this.

Keep on keepin' on.

Stay safe.

;-p

Ciao !

[GrantHerter]

I only heard of that j79 because of the kfair c7

[napalmholocaust]

Don't they also vent the crankcase/valve cover with a vacuum line and pull it into the intake? That's a car thing but any engine could do it, or no?

[richardgreen]

MAYBE: Been watching for years and for good reason. As a pilot using reciprocating engines I've been curious on the advertising of turbine powered planes regarding TBO / Hot Sections / Overhaul. One thing I've noted is that, for instance a Garrett TPE-10 might advertise a 5, 000 hr TBO, which presumes a 2, 500 hot section interval. But then I might see the same engine with 4, 500 hrs with a hot section having been performed at 4, 200 hrs. This is not intuitive and begs the question "what does the recent hot section add to the TBO or does the hot section serve as a partial overhaul"? I'm confident the answer is simple but the matter in this context isn't reviewed that i can find.

[LorRep]

Question from a newbie, bear with me please. In that jt8d diagram, it seemed to me that there are 2 separate turbines, driving their own shafts. The inner for the inner compressor, single stage. The second, maybe 3 stages, that drives the fan. But it also seemed to drive the first stages of the compressor. So the question is: does it also to reduce chance of compressor stalls? While I've seen your video about compressor stalls, bypasses and variable stators, I was wondering if this also may counteract this phenomenon. I hope to have decently expressed the question. Great videos by the way!

[anshhmalviyaa]

which is better? Static blades or dynamic (replaceable in slot) ?

[bill]

How does oil (may) make its way to the bleed air/cabin?

[Sonny_McMacsson]

Is this a re-published video? I swear I saw this with a different thumbnail like a day ago. Maybe I awoke in a different timeline.

[nikoladd]

This centrifical oil separator seems to work a lot like a Tesla turbine.

[GrantHerter]

Do you know anything about the j79 ge1a