Originally Posted by
AAKEE
No, thats not correct
NH90 has four FBW-computers. Two digital and two analog. The two digital are the ones providing normal handling and upper modes. Digital#1 is the one in charge normally with Digital#2 in stand by, with no degradation in performance if #1 “goes sick”.
Analog #1 and #2 is pure backup, with reduced handling qualities, more or less no decoupling and no upper modes.
The four lanes isnt connected to a specific computer but is handled by a actuator control computer (two
ACC’s actually) that selects what signals to send to the actuators.
= NH90 have digital FBW with analog backup.
Analog FBW computers as main FBW Computers should be a long time since put in
Aircrafts.
Im sure all three mentioned have digital FBW.
Thx - with simple redundancy (two systems) on the digital FBW incorporated into the NH90 could that aircraft be certified to the latest requirements with regards to FCS?
Other FBW aircraft are certified along latest requirements with triple redundancy (four non degraded parallel systems).
With a strongly degraded backup solution on the NH90 compared to a triple redundant digital solution I would still claim there are differences between an analog and digital FBW of which NH90 might be considered a hybrid.