Know anything about the PW118 engine?

Rodger Wilco

Rodger Wilco

Well-Known Member
Howdy all!

Hey I am trying to stack up my knowlage, I am wondering if anyone has a good resource for info on the Pratt and Whitney PW118 engine. That includes the 118a or 118b.

I have searched their website and hit wiki too, what I am looking for is a schematic or specific info on its internal workings, the compressors and turbines, basic layout.

Thanks in advance!
 
Pure effin' magic.

In all seriousness, unlike most Pratt turboprops, the air flows through in the correct direction; it is equipped with two single-stage compressors (driven by two single-stage turbines) and a twin-stage power turbine driving a (whatever). It's noisy as all getup.
 
Autothrust Blue said:
Pure effin' magic.

In all seriousness, unlike most Pratt turboprops, the air flows through in the correct direction; it is equipped with two single-stage compressors (driven by two single-stage turbines) and a twin-stage power turbine driving a (whatever). It's noisy as all getup.
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Do you have any technical drawings or anything like that? I have an interview at SKW and most of the gouges say that they ask you to draw a turbine engine. I would like to show some initiative and draw the bro.
 
Rodger Wilco said:
Do you have any technical drawings or anything like that? I have an interview at SKW and most of the gouges say that they ask you to draw a turbine engine. I would like to show some initiative and draw the bro.
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Technical advice: Probably. PM me and remind me.

Interview advice: We know more about that airplane than you do, so if you draw a basic tubojet/fan/prop without trying to get snazzy - or better yet, one that you've been responsible for operating, if you have such experience - you'll likely be better off.
 
OMG DO NOT talk about a 118 in a SkyWest interview unless you've been flying one. That is one of the top ten BIGGEST INTERVIEW MISTAKES EVER. Right up there with not putting your tie on until you're in the building.

Stick to general turbine principles and a generic diagram and you'll be much better off.

PS the airflow in a 118 reverses direction twice.

Sent from LV-426.
 
Like @Ralgha said- even the people who operate the things probably cannot draw one beyond general arrangement the first time through.


SSSSSSEENT FFFFROMM FMS KEYBOAAAAAAARDDDDD
 
Ralgha said:
OMG DO NOT talk about a 118 in a SkyWest interview unless you've been flying one. That is one of the top ten BIGGEST INTERVIEW MISTAKES EVER. Right up there with not putting your tie on until you're in the building.

Stick to general turbine principles and a generic diagram and you'll be much better off.

PS the airflow in a 118 reverses direction twice.

Sent from LV-426.
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I don't understand why it is such a huge mistake. I mean, if you are going to draw a basic layout, why not draw the basic layout of the 118? I doubt that they expect you to know everything about it in the interview, or that they would bury you for attempting to study ahead. I just don't understand why anyone would take it as a negative, especially if you admit that you don't know a lot about he 118 but that it is an over simplified drawing.

Is it an overly complex engine that I should just stay away from all together? Are the drawings in the Turbine Pilots Flight Manuel too simple or just right?

Thanks!

Joe
 
Draw your basic suck-squeeze-bang-blow engine and move on to the next question. No reason to make things harder on yourself or give the impression that you're a tool (which is exactly the impression I would get if you tried to draw the engine in question).
 
The 118 is not a basic turbine, it has two compressors, three spools, four turbines, and the combustion chamber is reversed flow.

Keep it generic and basic.

Hey though, it's your interview. Go ahead and try your way, even though two people who work there have told you it's a really bad idea.

Sent from LV-426.
 
Well thank you for the advice! I will be sure to stay away from it altogether. I am not trying to argue that it is a good idea. I was not aware that the 118 is not a simple engine. (I actually know nothing about it hence this post) I can see how someone would look like a tool if it was over-the-top complex. Got it.

Next question:

Are they asking you to draw a specific engine of some type, or just the general idea like what I can get from the Turbine Pilots Flight Manual?
 
Ralgha said:
The 118 is not a basic turbine, it has two compressors, three spools, four turbines, and the combustion chamber is reversed flow.

Keep it generic and basic.

Hey though, it's your interview. Go ahead and try your way, even though two people who work there have told you it's a really bad idea.

Sent from LV-426.
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And here I thought pratt might have gotten it right with the pw100 series.

OP, here's 20 ft of rope, try not to hang yourself with it. http://bit.ly/17yw79T

PW118 -
PW100_CS.jpg

http://www.pwc.ca/en/engines/pw118
 
Oh great, the Garrett Gangsters are here to kick sand in our faces again. ;)


SSSSSSEENT FFFFROMM FMS KEYBOAAAAAAARDDDDD
 
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