558 Winter Servicing

[Mayfly]

Thanks MR we don't expect you post pics every day - but muchly appreciated!!!!

[RLN]

Thanks MR, it's really good to see her bits.

Numpty question time - What are the 2 smaller pipes sticking out in the pic of the engine exhausts please?

[Sooty655]

Thanks MR, it's really good to see her bits.

Numpty question time - What are the 2 smaller pipes sticking out in the pic of the engine exhausts please?

Engine oil system breathers. The scavenge oil returning to the tank contains a lot of sealing air, so it is passed through a centrifugal seperator (driven by the LP compressor), from which the oil goes back to the tank and the air goes out of that pipe.

[Pujgnie]

As said elsewhere... Engineers get to take the better piccies (Eg Taffs one of Brunty Bear on April Calendar )

[RLN]

Thanks MR, it's really good to see her bits.

Numpty question time - What are the 2 smaller pipes sticking out in the pic of the engine exhausts please?

Engine oil system breathers. The scavenge oil returning to the tank contains a lot of sealing air, so it is passed through a centrifugal seperator (driven by the LP compressor), from which the oil goes back to the tank and the air goes out of that pipe.

Thanks, Sooty. Sorry, but what do you mean by sealing air? I know in my trade, but it may be different in yours.

[Sooty655]

Thanks, Sooty. Sorry, but what do you mean by sealing air? I know in my trade, but it may be different in yours.

Much the same, I suspect. At each bearing, the oil is kept in the bearing space by a labyrinth seal, the middle of which is fed with pressurised air. Most of the air flows away from the bearing space, but some flows into the bearing space and exits with the scavenge oil.

The air which flows away from the bearing space is clean, and can be dumped directly. Most of it goes out of the engine breather under the centre engine door.

The air which exits with the scavenge oil is messy, even after centrifugal separation, and has to be piped all the way to the back.

[RLN]

Thanks, Sooty again. Yes, much the same, but terminology in different industries usually means the same.

[Sploosher]

its still all dutch to me, mind you, I ahve ahd a couple of Stella`s.................

[Mags]

Lucky b****r

[Mackrick]

A few photos from today......












Now this one has got to be an entry for the caption competition......

[Nickolas]

Ok, clue me up.

What on EARTH are you lot up to now???

Caption:
one, two, three, straight back and...Bend ze kneez...............

[Mags]

Enema?

I shall refrain from drawing any cartoons of what sprung to mind

[Mackrick]

Nurse the screens .....

[Nickolas]

Colonic irrigation ??

[Mags]

Colonic irrigation ??

MR you forgot to get a shot of the facial expression at the sharp end during that procedure!

[Mackrick]

Ok its dehumidification, one feed for each engine and another for the power bay......

A few shots from today.....

[Ducati Boy]

A few photos from today......


Now this one has got to be an entry for the caption competition......

What a challenge, O.K how about this, "John thought his new Hot air warmed Zimmer Frame was just the job"

[Mackrick]

A few more photos from today... most in the Nose gear bay where I have been with mouse....
















And todays caption competition entry is ......

[Hungry Haggis]

And todays caption competition entry is ......

Whats worth buying on E Bay today

[Nickolas]

......Crikey look at the tits on that......

[Xplumberlives]

I bet he's looking at Ducatis!

[Mayfly]

So how do I switch this thing on then?

[Spitfire]

Is this some sort of emergency generator that can be dropped in to the slipstream ??



And some of these show her age don't they - despite all the years of loving attention she is still in a pretty bad state behind the scenes - tarting all that up would cost a few bob though

[Nickolas]

Is this some sort of emergency generator that can be dropped in to the slipstream ??



And some of these show her age don't they - despite all the years of loving attention she is still in a pretty bad state behind the scenes - tarting all that up would cost a few bob though

Top image is the Ram Air Turbine
This is dropped into the slipstream if all the electrics go off-line so that there is a modicum of electrical services to allow the crew to try to recover the situation.

Lower image, well if it ain't structural, and there is no corrosion who is going to get all het up about some flaky paint??

[Spitfire]

Thanks - it looked like a turbine but I wasn't sure

Re flaky paint - its just the model building perfectionist in me - I can't help it I'd have to be in there with a wire brush and a pot of paint .... I'd be no good on aircraft restoration obviously