axial fan vs centrifugal fan
- Thread starter AZflyboy
- Start date
AZflyboy
Well-Known Member
thank you
JeppUpdater
Well-Known Member
Try replacing the word "fan" with "compressor" and you'll have a lot more Google luck. Like this:
https://www.grc.nasa.gov/www/k-12/airplane/compress.html
Axials are easier to daisy chain together in X amount of space and are better at relatively lower RPMs, whereas centrifugals take more space and are better at higher RPMs (such as Garrets which idle over 70%).
Modern large turbofans tend to be axial (think 737/Airbus), some turboprops are purely centrifugal (Garrets), but a lot of engines use a combo of both types to provide more efficient power across the entire RPM range (such as the PT6 and many Pratt jets).
https://www.grc.nasa.gov/www/k-12/airplane/compress.html
Axials are easier to daisy chain together in X amount of space and are better at relatively lower RPMs, whereas centrifugals take more space and are better at higher RPMs (such as Garrets which idle over 70%).
Modern large turbofans tend to be axial (think 737/Airbus), some turboprops are purely centrifugal (Garrets), but a lot of engines use a combo of both types to provide more efficient power across the entire RPM range (such as the PT6 and many Pratt jets).
hook_dupin
Well-Known Member
mmm....can annular compressor. Sounds naughty.
AZflyboy
Well-Known Member
that would definitely help, thanks! I just started reading the turbine pilots manual and of course one interview question I ran into was, "what is the difference between axial fan and centrifugal fan" so I just went with the word fan like it asked.
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jynxyjoe
Queso King
Pt6a is a centrifugal (pronouce it few-gul), which attaches to 1900, which is the best airplane ever.
Axial flows are little wuzzy girls.
Roger Roger
Bottom of the list
Nah mang PT6 has more axial compressors than centrifugal. The TPE331 has 2 centrifugal compressors alone.
AZflyboy
Well-Known Member
Okay I'll make sure to add that when asked what my thoughts are of an axial flow
haha
jynxyjoe
Queso King
Sure. But let's weigh those mincy little bastards on one scale, and slap down that manly centrifugal bastard on the other scale and see what tips where.
Edit: And they do nothing btw. The just spin there at 10,000 rpm looking stupid and lost and saying, "here take this air, do something with it! Im stupid!"
Roger Roger
Bottom of the list
That's why TPE331 is life.
milleR
Well-Known Member
The PT-6 is the tricycle of turbo-props. Real men ride bikes
JeppUpdater
Well-Known Member
Even more manly men buy a semi-production Rolls-Royce/Allison powered motorcycle:The PT-6 is the tricycle of turbo-props. Real men ride bikes
https://en.wikipedia.org/wiki/MTT_Turbine_Superbike
milleR
Well-Known Member
I seem to recall a story Jay Leno told of riding his and being crowded at a light by a guy in a BMW(??). I believe he said the fun part was watching the guys bumper melt from his exhaust.
Edit: it was an Infinity apparently.
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ppragman
FLIPY FLAPS!
If memory serves, the PT6A-65B has four axial compressors and one centrifugal, whereas the TPE331-12 has 2 centrifugal compressors...
PhilosopherPilot
Well-Known Member
That's the truth. Man are they loud!
milleR
Well-Known Member
It's a well known fact that old school turbine noise grows man-hair. It's like comparing Sean Connery to Daniel Craig.
Roger Roger
Bottom of the list
Centrifugal compressors: because why use 4 rows of dainty, perfectly profiled individual blades when one big honking milled chunk of titanium billet will do the job?