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Old 01-10-2019, 02:37 PM   #11
DanielNL
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vibrating where, near the pilots body so he senses vibration? Vibrating collective or stick?
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Old 01-10-2019, 02:39 PM   #12
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the unit itself, the pilot gets enough vibration
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Old 01-10-2019, 03:02 PM   #13
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Where is SO-121VM located in the Mi-8?
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Old 01-10-2019, 04:10 PM   #14
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I believe its in the same place
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Old 01-10-2019, 10:34 PM   #15
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But it vibrates that strong that pilot feels it? huh
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the unit itself, the pilot gets enough vibration
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Old 01-10-2019, 11:43 PM   #16
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The paper shows it in the oil cooling fan inlet
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Old 01-12-2019, 12:19 AM   #17
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The item pictured is a visual ice detector. It's nothing more than a probe marked with 5mm paint stripes so the pilot can visually identify ice buildup if the automatic system isn't working.

As far as the automatic detectors go, which are installed in the oil cooler fan inlet...

The RIO-3 is older and uses a radioactive isotope in the detector. As ice builds up on it, a sensor receives fewer and fewer radioactive particles and once it gets below a certain threshold it trips the ice warning. On the newer SO-121 detector, the detector just vibrates at a high frequency. Ice buildup causes the vibrations to slow, and once the vibration frequency gets below a certain threshold, it trips the ice warning.

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W T F, 51 pages for ONE system only, OMG!!!

Who created it?
I did. I suppose I could have made it shorter but that's just how it came out. Making training presentations isn't my primary job, after all.
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Old 01-12-2019, 01:50 AM   #18
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Quote:
Originally Posted by AlphaOneSix View Post
As ice builds up on it, a sensor receives fewer and fewer radioactive particles and once it gets below a certain threshold it trips the ice warning

Sooo... that one had a Geigercounter on board? xD I guess I understand why the next model had a different system, as with the old model when they'd fly through a radioactive freezing area, the ice warning wouldn't appear? (dangerous)


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I did.
Damn! how many hours did it take you?
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Old 01-12-2019, 08:55 AM   #19
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Quote:
Originally Posted by DanielNL View Post
Damn! how many hours did it take you?
AlphaOneSix has put many hours into describing various systems of the Mi8 at length. His docs are invaluable, I suggest you look them up, I couldn't find a central repository for them, search for threads with title "How it works" in the Mi8 section , like this one : https://forums.eagle.ru/showthread.php?t=151326

Thanks again AlphaOneSix!
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Old 01-12-2019, 01:13 PM   #20
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Thanks! Somehow this gives me the impression that he himself isn't american, but more likely former soviet? (As Mi-8 originates from UDSSR times) That'd be awesome
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