Tires-Electrostatically Grounded Or Not — Tech Ops Forum

Sponsor Message:


My Starred Topics \| Profile \| New Topic \| Forum Index \| Help \| Search

Tires-Electrostatically Grounded Or Not

HAWK21M From India, joined Jan 2001, 31201 posts, RR: 58
Posted (4 years 7 months 3 weeks 6 days 16 hours ago) and read 3224 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

Tdscanuck From Canada, joined Jan 2006, 12709 posts, RR: 80
Reply 1, posted (4 years 7 months 3 weeks 6 days 5 hours ago) and read 3167 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.

HAWK21M From India, joined Jan 2001, 31201 posts, RR: 58
Reply 2, posted (4 years 7 months 3 weeks 5 days 18 hours ago) and read 3093 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!

CAL764 From United States of America, joined May 2008, 366 posts, RR: 0
Reply 3, posted (4 years 7 months 3 weeks 7 hours ago) and read 2834 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...

Nomadd22 From United States of America, joined Feb 2008, 1561 posts, RR: 0
Reply 4, posted (4 years 7 months 2 weeks 6 days 22 hours ago) and read 2772 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

474218 From United States of America, joined Oct 2005, 6340 posts, RR: 10
Reply 5, posted (4 years 7 months 2 weeks 6 days 21 hours ago) and read 2765 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

HAWK21M From India, joined Jan 2001, 31201 posts, RR: 58
Reply 6, posted (4 years 7 months 2 weeks 6 days 16 hours ago) and read 2734 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!

Avioniker From United States of America, joined Dec 2001, 1109 posts, RR: 11
Reply 7, posted (4 years 7 months 2 weeks 5 days 8 hours ago) and read 2633 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

HAWK21M From India, joined Jan 2001, 31201 posts, RR: 58
Reply 8, posted (4 years 7 months 2 weeks 3 days 16 hours ago) and read 2504 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!