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<DIV>The windows are sized and shaped such that lightning will have practically
no effect on passengers. </DIV>
<DIV> </DIV>
<DIV>MattK</DIV>
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<DIV>In a message dated 11/24/2004 9:48:35 AM Eastern Standard Time,
bob@toprudder.com writes:</DIV>
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<DIV>I mentioned that the material used to construct RF shielded rooms would
make a good flat worksurface. Then somebody mentioned "Faraday cage" --
completely off topic for the group. Funny, though, it made it back to "don't
build a fuselage out of this stuff". </DIV>
<DIV> </DIV>
<DIV>You mentioned full-sized aircraft fuselages being Faraday cages,
they are to some extent. Not only can the fuse shell keep signals out, they
can also keep signals in. Very high field strengths can be achieved with very
little power, and nodes can exist where reflections arrive in phase. This is a
very big problem, and compliance test standards (such as DO-160) exist to
insure that systems inside an aircraft don't emit strong signals that can
interfere with other systesms, and can also still operate when interference is
present. This is also why they don't want computers and electronic equipment
operating during the times that the instrumentation is most needed (takeoff
and landing, especially in IFR conditions). </DIV>
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<DIV>Bob Richards.</DIV>
<DIV><BR><BR><B><I>Rcmaster199@aol.com</I></B> wrote:</DIV>
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<DIV>The tangents that some threads create are often much more interesting
than the original intent of the thread. </DIV>
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<DIV>Keith I would say it's not a good idea. If you built a fuse out of this
material, (done everyday BTW), I suggest you build it large enough to
accomodate the person flying it (vbg). I know Bill, Don Ramsey and Al Glenn
and probably several more, flew or still fly "Faraday Cages" for a
living</DIV>
<DIV> </DIV>
<DIV>Now, how we went from measuring surface flatness to "shielding" devices
from EMI/RFI (regardless of what the emitting source is), is beyond me</DIV>
<DIV> </DIV>
<DIV>MattK</DIV></DIV></FONT></BLOCKQUOTE></FONT></BLOCKQUOTE></DIV>
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