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Tires-Electrostatically Grounded Or Not  
User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Posted (5 years 11 months 1 week 3 days 22 hours ago) and read 4543 times:

Can one tell by looking at a tire if the airplane is normally electrostatically grounded through
conductive tires or not?
regds
MEL...


Think of the brighter side!
8 replies: All unread, jump to last
 
User currently offlineTdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 1, posted (5 years 11 months 1 week 3 days 11 hours ago) and read 4486 times:



Quoting HAWK21M (Thread starter):
Can one tell by looking at a tire if the airplane is normally electrostatically grounded through conductive tires or not?

Even if you had conductive tires, I'm not sure you could ever assume the airplane is grounded because you don't know the conductivity or grounding of the surface the airplane is sitting on.

Tom.


User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 2, posted (5 years 11 months 1 week 3 days ago) and read 4412 times:



Quoting Tdscanuck (Reply 1):
Even if you had conductive tires, I'm not sure you could ever assume the airplane is grounded because you don't know the conductivity or grounding of the surface the airplane is sitting on.

Thats true.But what I'm indicating is if there is any print etc on the Tire exterior stating that that particular tire is a conductive one.
regds
MEL



Think of the brighter side!
User currently offlineCAL764 From United States of America, joined May 2008, 377 posts, RR: 0
Reply 3, posted (5 years 11 months 4 days 13 hours ago) and read 4153 times:



Quoting HAWK21M (Reply 2):
But what I'm indicating is if there is any print etc on the Tire exterior stating that that particular tire is a conductive one

IIRC Blackbird tires contain Aluminum in the rubber...would that constitute conductivity?



1. Fly to Win 2. Fund Future 3. Reliability 4. Work Together CO: Work Hard, Fly Right...
User currently offlineNomadd22 From United States of America, joined Feb 2008, 1858 posts, RR: 0
Reply 4, posted (5 years 11 months 4 days 4 hours ago) and read 4091 times:

Some auto tires created problems by being such great insulators that large static charges were building up on the vehicle, but most tires aren't that bad. I'd imagine that part of the specs for aircraft tires would be to have a tiny bit of conductivity so they'll discharge the plane to ground within a few seconds.
Concrete and asphalt don't conduct very well, but they do conduct, and you don't have to pass much current to discharge static buildup. You're not trying to protect aginst a lightning strike.
Just don't do like the occasional moron who puts the fuel truck ground lead on something that's obviously non conductive.



Andy Goetsch
User currently offline474218 From United States of America, joined Oct 2005, 6340 posts, RR: 9
Reply 5, posted (5 years 11 months 4 days 4 hours ago) and read 4084 times:



Quoting HAWK21M (Thread starter):
Can one tell by looking at a tire if the airplane is normally electrostatically grounded through
conductive tires or not?

I don't how you could tell by looking. However, tires are naturally conductive.

See page 16 of the following:

http://www.goodyearaviation.com/img/pdf/aircraftmanual.pdf


User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 6, posted (5 years 11 months 3 days 22 hours ago) and read 4053 times:



Quoting 474218 (Reply 5):
I don't how you could tell by looking.

Looking as in the sense of print present on tire exterior indicating same.
regds
MEL



Think of the brighter side!
User currently offlineAvioniker From United States of America, joined Dec 2001, 1109 posts, RR: 11
Reply 7, posted (5 years 11 months 2 days 14 hours ago) and read 3952 times:

If you want to look and tell if it's conductive or not you need only note the color.
If it's black that indicates the use of carbon black in the reinforcement structure of the basic formula. Carbon black is highly conductive.
Latex rubber is neutral white before the additives are blended in.

 Smile



One may educate the ignorance from the unknowing but stupid is forever. Boswell; ca: 1533
User currently offlineHAWK21M From India, joined Jan 2001, 31679 posts, RR: 56
Reply 8, posted (5 years 11 months 23 hours ago) and read 3823 times:



Quoting Avioniker (Reply 7):

If you want to look and tell if it's conductive or not you need only note the color.
If it's black that indicates the use of carbon black in the reinforcement structure of the basic formula. Carbon black is highly conductive.
Latex rubber is neutral white before the additives are blended in.

On line I don't think the colour would differ.hence Tire print aka S/N,loading/Ply rating/Retread status etc on the circumfrence.
regds
MEL



Think of the brighter side!
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