4 ms·
Why is it possible to set the trim to insane? Is there a legitimate scenario where that would be used?
by Domenic_S 8y ago
Why is it possible to set the trim to insane? Is there a legitimate scenario where that would be used?
- ls612 8y agoIf the AoA was truly way too high then insane trim would be required to correct that. MCAS and similar systems came about in response to AF 447 where the pilots entered a high AoA situation and stalled the plane into the Atlantic.
- cjbprime 8y agoIs it necessarily true that you have to use the stabilizer for MCAS? Would implementing a stick pusher instead fail to avoid some stalls?
- Zak 8y agoIt's true in the case of the 737 MAX where the pitch-up moment caused by the engines exceeds the elevator authority in a low-speed, high-thrust situation if the pitch trim is also set too high. MCAS will evidently work with less maximum nose-down trim than the current version has, as the proposed update places a limit on it.
- 781 8y agoWell, the plane might be at an insane angle, so then you need an insane trim setting to correct it :)
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