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Panel Electrical Grounding / Bonding

Panel Electrical Grounding / Bonding

Panel Electrical Grounding / Bonding

(OP)
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.

RE: Panel Electrical Grounding / Bonding

Typical airframe "panels" are constructed from either 2024-T3 or 7075-T6 aluminium alloy.  They are usually coated or clad with pure aluminiun for enhanced corrosion protection.

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.

To prevent corrosion, most structure has a surface conversion treatment applied.  These are either alodine or irridite.  Irridite can not be used on structure that requires electrical grounding,instrument panels for examlpe; it is not a good conducter.

Final finish is usually a chromate primer and a top coat, although some fuselages are left unpainted.

Hope this helps,

Nigel Waterhouse
n_a_waterhouse@hotmail.com

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.

RE: Panel Electrical Grounding / Bonding

(OP)
Thank you for the helpful note. Bill B. 717-986-3040.

William H. Bernhart, P.E.


RE: Panel Electrical Grounding / Bonding

You are more than welcome, any more questions, don't hesitate to ask.

Ph 250 491 5555

Nigel Waterhouse
n_a_waterhouse@hotmail.com

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.

RE: Panel Electrical Grounding / Bonding

Ooops, I made an error, irridite is the good conductor, alodine is the bad conductor!

Nigel Waterhouse
n_a_waterhouse@hotmail.com

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.

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