Good observation, and I wasn't opposing any additional engine-related
reading one desires. I'm contemplating a probe in the coolant bottle,
fed to my home-brew EICAS, to early detect coolant loss. I was
basically addressing how to deal with the FAA.
I can't get past the problem of setting a red line. Besides probe
location, it can be higher in ground idling than in flight, and the
pressure cap can fail, lowering the boiling point. I wish I were done
with my project so as to know better, but I still have the feeling
that to be practical, the coolant red line will have to be set high
enough so that accurate CHT readings will still control.
Regards,
Fred F., A063
Isabel Buckingham wrote:
>
> Message text written by Fred Fillinger
> >Besides having no idea what red line coolant temp should be for one's
> chosen probe position, I believe you'll see red line CHT long before
> excess coolant temp, if ever the latter (depending again on probe
> position and its design, or whether you've lost coolant).
> <
>
> A note of caution on that! I recently read teh UK accident report
> (http://www.aaib.detr.gov.uk/bulletin/apr01/gkwip.htm) on an accident where
> coolant, having been intentionally diluted with water (but possibly to a
> greater extent thatn the owner realised?) started to boil at what would
> otherwise have been a "safe" engine tempurature.
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