Dust Protector presentation

[AlphaOneSix]

I made this PDF for someone else, but I am posting it here as an attachment in case it is of interest to others. It is a very basic description of the engine dust protectors that we show to our new pilots and mechanics.

 

Note that this is for an Mi-17, but the Ka-50 uses the same engines and dust protectors.

PZU.pdf

[Doggy]

So when dust protection is off, it acctually means that just the Flow Control Valve is closed and there is no suction in ejector tube?

[AlphaOneSix]

So when dust protection is off, it acctually means that just the Flow Control Valve is closed and there is no suction in ejector tube?

 

Correct.

Edited January 21, 2009 by AlphaOneSix

[Tbag]

Thanks for sharing! I always like to understand the systems I'm "using" :)

[Groove]

Thanks for sharing :)

 

How about some more pics about the APU->ENGINES->GEROBOX(ES) :)

[Doggy]

That would be really interesting!

But then ED will have to add another ability tho the sim and that is when something screws up, land, get out and fix it :P

[REL]

THX AlphaOneSix

 

Nice to understand how the system's actually functioning

[Devas]

Thx AlphaOneSix!!! for sharing!! :book:

[McVittees]

Very cool, but having read it I still don't understand how it works! Doh! :huh:

 

Is the bit in the middle the seperator? Which thing is the inner baffle? How is the air cleaned by rotation through the channels? Sorry to be a bit dim but I'm just very curious.

Edited January 21, 2009 by McVittees

[Airway]

Thanks for sharing !

 

I like this kind of details :thumbup:

[Tango]

Great explanation!! MORE! MORE! :D

 

Best regards,

Tango.

[Mad Dog 7.62]

Thanks! Nothing like a simple explanation with pictures!

[haigotron]

i loved it!! :D, now i understand what those two white tubes are that stick out from the front of the engine cowling!

 

I also liked how it was short, to the point and had images! I would love to see more things like this (maybe even stickied?)

[Frederf]

Very cool, but having read it I still don't understand how it works! Doh! :huh:

 

Is the bit in the middle the seperator? Which thing is the inner baffle? How is the air cleaned by rotation through the channels? Sorry to be a bit dim but I'm just very curious.

 

The thing toward the center is the separator. The inner baffle is the ice cream cone shaped device behind the teardrop shaped fairing stem.

 

The clean air the goes outside the separator goes straight on into the engine. The inner baffle is not solid so the mixture of clean air and dust is swirled around in there (don't ask me how that swirl is created) so that more clean air that was inside the separator can leak out and continue on to the engine. The swirling action throws the dust particles against the channel walls and keeps it in the separator all the way down to the ejector port at the far end. It's all a trick to get some more clean air out of the dust stream and into the engine after the initial inner/outer sleeve separation.

 

Thanks for asking the question, answering it made me understand it better than I got at first glance!

[Sealpup]

As to what causes the swirling of the incoming airflow the dust protection system relies on:

 

The fact that the first stage of the compressor is spinning. It'll have an effect on the incoming airflow not unlike the blade at the bottom of a blender.

[graywo1fg]

thanks for sharing! :D awesome!

[Slayer]

Now we need to see how it operates in de-ice mode :) seems like this system would get fouled out pretty quickly with ice buildup. Also I would like to know if the dust protection lowers the performance of the engine like de-ice?

[Frederf]

As to what causes the swirling of the incoming airflow the dust protection system relies on:

 

The fact that the first stage of the compressor is spinning. It'll have an effect on the incoming airflow not unlike the blade at the bottom of a blender.

 

Thought as much, thanks!

 

Now we need to see how it operates in de-ice mode :) seems like this system would get fouled out pretty quickly with ice buildup. Also I would like to know if the dust protection lowers the performance of the engine like de-ice?

 

When you turn the switch to the de-ice mode I think the dust protection system retracts?

[diveplane]

I made this PDF for someone else, but I am posting it here as an attachment in case it is of interest to others. It is a very basic description of the engine dust protectors that we show to our new pilots and mechanics.

 

Note that this is for an Mi-17, but the Ka-50 uses the same engines and dust protectors.

 

nice job alpha.

[McVittees]

The thing toward the center is the separator. The inner baffle is the ice cream cone shaped device behind the teardrop shaped fairing stem.

 

The clean air the goes outside the separator goes straight on into the engine. The inner baffle is not solid so the mixture of clean air and dust is swirled around in there (don't ask me how that swirl is created) so that more clean air that was inside the separator can leak out and continue on to the engine. The swirling action throws the dust particles against the channel walls and keeps it in the separator all the way down to the ejector port at the far end. It's all a trick to get some more clean air out of the dust stream and into the engine after the initial inner/outer sleeve separation.

 

Thanks for asking the question, answering it made me understand it better than I got at first glance!

 

 

Thank you for your explanation - that cleared it up for me! Rep inbound! :thumbup:

[AlphaOneSix]

On an Mi-17, there are seperate switches for the dust protectors and the engine anti-ice, and so there are two seperate air valves. The Ka-50 only has one switch, so I suspect that there is only one air valve. However, there are electrically heated portions of the inlet that get turned on when the switch is in the anti-ice position that do not come on when only in the dust protector position (other portions of the inlet area are heated using bleed air, the same are used to operate the dust protectors).

 

So you will experience a small amount of engine power lose both when the dust protectors are on, as well as when the engine anti-ice is on.

[aledmb]

Thanks for sharing! I always like to understand the systems I'm "using" :)

 

theodore?

:lol:

[Frederf]

AlphaOneSix, when the de-icing is on does the dust-protection turn off or is de-icing both de-icing and dust protection on at the same time?

[aledmb]

AlphaOneSix, when the de-icing is on does the dust-protection turn off or is de-icing both de-icing and dust protection on at the same time?

they are at opposite sides of the switch, aren't they?

i have the same question.

[Slayer]

It's a 3 position switch [anti-Ice/off/Dust] both can't be on at the same time and the indicators tell us that also. Besides what situation would require both? If your landing in unimproved areas then you need dust protection. If your flying in the mountains or its freezing and snowing then anti-ice. I knew it affected engine power in anti-ice. Just wasn't sure about dust protect. Guess I'll make it a habit to turn this to off after takeoff.

 

Thanks for the reply ALpha