Panel Electrical Grounding / Bonding 1

[jobeth]

I would like to obatin helpful information on grounding / bonding of electrical connectors to airframe panels. What are the typical materials, thicknesses, and finishes of aiorframe panels. Any informaytion would be appreaciated. Thank you.

 

[Nigel]

Typical airframe &quot;panels&quot; are constructed from either 2024-T3 or 7075-T6 aluminium alloy.&nbsp;&nbsp;They are usually coated or clad with pure aluminiun for enhanced corrosion protection.<br><br>The thickness of the panels depends on the type of aircraft the kind of structure and the structural loads it must withstand. Common thicknesses range from 0.025 in. - .2 inches.<br><br>To prevent corrosion, most structure has a surface conversion treatment applied.&nbsp;&nbsp;These are either alodine or irridite.&nbsp;&nbsp;Irridite can not be used on structure that requires electrical grounding,instrument panels for examlpe; it is not a good conducter.<br><br>Final finish is usually a chromate primer and a top coat, although some fuselages are left unpainted.<br><br>Hope this helps, <p>Nigel Waterhouse<br><a href=mailto:n_a_waterhouse@hotmail.com>n_a_waterhouse@hotmail.com</a><br><a href= > </a><br>A licensed aircraft mechanic and graduate engineer. Attended university in England and graduated in 1996. Currenty,living in British Columbia,Canada, working as a design engineer responsible for aircraft mods and STC's.

 

[jobeth]

Thank you for the helpful note. Bill B. 717-986-3040. <p>William H. Bernhart, P.E.<br><a href=mailto: > </a><br><a href= > </a><br>

 

[Nigel]

You are more than welcome, any more questions, don't hesitate to ask.<br><br>Ph 250 491 5555 <p>Nigel Waterhouse<br><a href=mailto:n_a_waterhouse@hotmail.com>n_a_waterhouse@hotmail.com</a><br><a href= > </a><br>A licensed aircraft mechanic and graduate engineer. Attended university in England and graduated in 1996. Currenty,living in British Columbia,Canada, working as a design engineer responsible for aircraft mods and STC's.

 

[Nigel]

Ooops, I made an error, irridite is the good conductor, alodine is the bad conductor!<br> <p>Nigel Waterhouse<br><a href=mailto:n_a_waterhouse@hotmail.com>n_a_waterhouse@hotmail.com</a><br><a href= > </a><br>A licensed aircraft mechanic and graduate engineer. Attended university in England and graduated in 1996. Currenty,living in British Columbia,Canada, working as a design engineer responsible for aircraft mods and STC's.

 

[mechead]

I use MIL-STD-464 as a reference for application.
You can find it at

http://stinet.dtic.mil/str/dodiss4_fields.html

Justin Young
youngj921@asme.org