Re: Boeing bets the house on CF.....

On Jul 7, 11:37 pm, raam...@xxxxxxxxx wrote:

I am wondering about static buildup caused by all that carbon fibre- Hide quoted text -

- Show quoted text -

Carbon fiber does not cause static buildup, fast motion between
materials does. Static can build up due to motion between the air
molecules and the skin of an aircraft. Like a metallic-skin aircraft,
if the outer panels are electrically connected to each other the
static charge distributes over the entire aircraft surface without any
further discharges (sparks). Because carbon is a resistive conductor
it might even be better than alu skin, because as the charge flows its
energy will be at least partly dissipated to heat. If the skin panels
are not properly connected to each other, both aluminum and carbon
panels can show discharges.

Static concentration of electric charge doesn't cause aircraft
electronics problems, discharge of stored energy does. If the energy
distributes itself over the airframe without discharge, there should
be no problem with aircraft electronics, and hence with flight
integrity.

Ken

.

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