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C182 Glass Panel
I've got a question about the glass panel displays in the C182 (or any other
aircraft for that matter). I was reading this month's edition of AOPA Pilot magazine and the cover story is the C182T and the new glass panel displays Cessna decided to incorporate and it got me thinking. My question is: how does a glass panel display take information received from the pitot-static and gyro systems and translate that into the display? On "standard" panels, the pitot-static and gyro systems power the instruments be means of a mechanical linkage between air pressure differentials or gyros and the instrument display itself. Now, on a glass panel, I'm assuming that mechanical linkage is no more. Is everything I know about how instruments work out the window with glass panels? For example, if my static source becomes clogged, I would assume that the pitot-staitc instruments on the glass panel would be affected the same as they always were. But can I still break the glass on one of the other "standard" instruments using static pressure that the 182T still incorporates for redundancy (airspeed, altimiter)? If I broke the glass on the standard altimiter for example (assuming my glass panel was fully functional so that I wouldn't need to rely on the standard altimiter, but the static source was blocked causing erroneous indications), would that allow static air pressure to flow where it needs to in order to accurately reflect on the glass panel display also? I'm just a little confused as to how the glass panel instruments actually work. Can someone provide an explanation? Thanks, Scott |
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