Quote:
Originally Posted by john70t
4. Why can't fuel/ignition go through an oil pressure switch? (referencing red-beard)
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So if your oil pressure drops then your ignition cuts out? Is this what you are suggesting? I don't think that would be a good idea. Having your power cut when you are in the fast lane of your free way would be a major safetly thing, also your power assist on your brakes would be gone. I wouldn't want that to happen to me out of the blue.
As for modern aircraft, they have all sorts of computers and software managing the fuel. If you look at the major incidents behind aircraft running out of fuel there were reasons. 1) Gimli glider: They knew their fuel monitoring computer was not working but took off, someone made a mistake converting imperial to metric. Not enough fuel on board. 2) Avianco flight: They knew exactly how much fuel they had and they knew they were in trouble. Decided not to declare a fuel emergency. 3) Air transat: Fuel leak, didn't follow procedures exactly either. By the time they realized what had happened it was too late.
As for transmission fluid. Well transmissions don't 'burn' oil/fluid like a car does. Automatic transmissions have a dipstick just like for the oil and a leak in a manual gear box is a very rare thing so the manufacturers probably don't want to spend the money. Think about it; if you, as an engineer, find away to save $10 off the manufacturing of each transmission you have probably earned your salary for the next decade.
-matt