static palette: where?

[alex369]

hi forums (please everyone),
I would like to ask you the following question, in view of a cad design of a rr olympus 593 (I also place some reference image):
how are the stator blades of a compressor mounted? I explain better: the tree rotates and with it also the rotor palettes. The static ones, as we know, are firm. but where/how are they mounted? watching some videos on youtube (like this https://www.youtube.com/watch?v=cxsi4gxuojo minute 1:30) it seems that the stators are sympathetic to the external box of the engine itself, like so (look at the image :mrgreen: )Unfortunately, however, I don't match the same from these images in the section of the engine I'm talking about (the olympus 593, in fact):Looking at the compressor (also the initial part, consisting of 7 rotors and 7 stators) it seems that the stators are mounted on a case outside the shaft, therefore not on the external box of the engine.
Can you give me a hand?
I attach some image of the engine, found on the net

 

[cacciatorino]

Looking at the compressor (also the initial part, consisting of 7 rotors and 7 stators) it seems that the stators are mounted on a case outside the shaft, therefore not on the external box of the engine.

What do you mean by engine box? You mean the famine that is usually made of white painted aluminum? that's an external cover that is used to convey the airflow of the turbo-fan (it seems to be called so), but it's not the containment tank of the axial compressor.

 

[alex369]

What do you mean by engine box? You mean the famine that is usually made of white painted aluminum? that's an external cover that is used to convey the airflow of the turbo-fan (it seems to be called so), but it's not the containment tank of the axial compressor.

No, I don't mean the outer white one, I mean the one who's "under"

 

[paulpaul]

to me it seems that even in the olympus the static blades are bound to external casing as, that I know, in all axial compressors (but I leave the word to the most experienced within).
at the end of the static blades, therefore near the drum of the rotor, it seems to me to see instead seal elements (labyrinths? other?) that are sometimes used to reduce end losses (refluxed from the upstream stage to the valley stage through the rhetoric/drum palate game).

 

[paulpaul]

...incidentally, reviewing the section, it seems to me that these "holding systems" (I can't give it any other explanation) are present on all the static blades of the bp compressor and only on the first two stages of the ap compressor. the other five stages of the ap compressor have the "free" static palettes.
In any case, the fixing of all static palettes seems to me to be done on external casing, as already said.

 

[marcof]

hi forums (please everyone),
I would like to ask you the following question, in view of a cad design of a rr olympus 593

but yes, to start, it seems to me an adequate project, then you will grow slowly:biggrin:

(you also place some reference image):
how are the stator blades of a compressor mounted? I explain better: the tree rotates and with it also the rotor palettes. The static ones, as we know, are firm. but where/how are they mounted?

by force must be supportive to the external "carter" of the engine. In many cases there are also mechanisms to vary the angle of the static palettes.
try to see here:http://climeg.poliba.it/file.php/121/materiale_didattico_mafii/turbine_systems.pdfhttp://people.clarkson.edu/~dbohl/a...hnology_evolution_a designers_perspective.pdfalso by inserting some keywords related to patents you find interesting material to clarify how certain details are built. the first I found on the fly:http://russianpatents.com/patent/239/2396438.htmloppuri cerca per:https://www.google.it/search?q=turb...lqwazaou5ohgcg&ved=0cbwqbsga&biw=1440&bih=771

 

[paulpaul]

I link to marcof:
http://people.clarkson.edu/~dbohl/ae...erspective.pdfwhere he speaks of pw f100 (mdd f15 and gd f16)

fig.20: see the labyrinth seals of which I spoke at the end of the static palette, rotor side;
fig.24: see a detail

I think it's the same seals (maybe constructively a little different) that you thought were anchoring the static palettes in the olympus.

here.
http://1.bp.blogspot.com/_fcqnwxkgz...ksi/kk3t2pump14/s1600-h/hp_aubesailettes2.jpgI found the complete set of olympus ap compressor static and rotor palettes: as you see the static palettes are undoubtedly fixed to the external casing, while the first two stages lead to the end of the rotor side "the enclosure" for fixing the sealing elements on the rotor: probably the ends of these palettes are closed to "ring" (shroud) as clearly seen in Fig. 12 of the annex of marcof above (although the figure refers to a stage of turbine, little matter).

 

[alex369]

Thank you so much to all!
the linked material is perfect, as soon as I carry on the project I will show you how it proceeds

 

[maxopus]

I see it hard, I gamble an 8400 on a vickers scale.