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Which of the following uses a monitoring system to check the function of channels?(a) Matching triplex(b) Monitored triplex(c) Master triplex(d) Major triplexI have been asked this question by my college professor while I was bunking the class.My question comes from Redundancy and Failure Survival in FBW topic in division Fly by Wire Flight Control of Avionics

Answer»

The correct CHOICE is (b) Monitored triplex

To EXPLAIN: The incorporation of a monitoring system to check the correct functioning of a channel to a very high confidence level can also enable a failed channel to be identified and disconnected and this leads to an ALTERNATIVE failure survival configuration KNOWN as ‘monitored triplex’. A monitored triplex configuration comprises three totally independent parallel channels with each channel monitored by a dissimilar system to DETECT a failure.



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