Newps wrote:
Mxsmanic wrote:
Newps writes:
There is no change in complexity when things go wrong with FADEC.

Yes, there is, because digital systems have different failure modes
from those of analog systems, and digital failure modes are often
catastrophic failure modes.


Spoken like a sim pilot. If you had the slightest idea what the hell
you were talking about you would know that when the FADEC fails, usually
the computer goes belly up but it could be an electrical power loss, the
engine continues to run but does so at a very rich setting. If the
FADEC controls the prop then that goes to high RPM. [..]

Seems like you just proved his statement that digital failure modes are
different. If my analog (mechanical in this case) prop control fails,
it doesn't affect my mixture at the same time, as you're saying FADEC
does.

At the same time: Mxsmanic, apparently they've designed FADEC to fail
without being catastrophic.

My own personal worry is coming automobiles with totally electronic
steering and brakes. I'm sorry, even thoughI design reliable embedded
systems and I still would hate owning a car like that :-)

Kev