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Forum: Tech Log

16th Dec 2018, 05:52

Replies: 195

737MAX Stab Trim architecture

Views: 133,187

Posted By jimtx

Based on the initial MCAS nosedown trim...

Based on the initial MCAS nosedown trim (referenced in previous posts) wouldn't you think that that amount of trim would not be to prevent an actual reversal of pitch input but just an adjustment to...

Forum: Tech Log

15th Dec 2018, 15:52

Replies: 195

737MAX Stab Trim architecture

Views: 133,187

Posted By jimtx

So the only MCAS flight envelope is steep turns?...

So the only MCAS flight envelope is steep turns? Following a TCAS climb command would not be a problem without MCAS? A windshear escape maneuver would not be in the envelope either, a rare occurrence...

Forum: Tech Log

15th Dec 2018, 10:54

Replies: 195

737MAX Stab Trim architecture

Views: 133,187

Posted By jimtx

So if you have a malfunction where you apply the...

So if you have a malfunction where you apply the AD procedure you now have an aircraft with “unimproved” longitudinal handling characteristics and degraded trim capability. But FAA/Boeing does not...

Forum: Tech Log

14th Dec 2018, 03:54

Replies: 195

737MAX Stab Trim architecture

Views: 133,187

Posted By jimtx

So FAR part 25 has requirements for the ac...

So FAR part 25 has requirements for the ac aerodynamics (?) to provide the pilot with an airplane that enables him to control load factors with a linear stick pull and not have the the surprise of...

Forum: Tech Log

13th Dec 2018, 03:33

Replies: 195

737MAX Stab Trim architecture

Views: 133,187

Posted By jimtx

"such as wind up turns" Obviously no airline crew...

"such as wind up turns" Obviously no airline crew is going to do a windup turn, a test flight procedure, hopefully:) But they do or used to do steep turns in the simulator which should be a data...

Forum: Tech Log

12th Dec 2018, 13:30

Replies: 195

737MAX Stab Trim architecture

Views: 133,187

Posted By jimtx

Would MCAS activate in a 250 knot 45 degree bank...

Would MCAS activate in a 250 knot 45 degree bank steep turn. Would it activate in a slightly over bank 35 degree turn at a lower airspeed.
Can the autopilot be put in the MCAS envelope where it is...

Forum: Tech Log

12th Dec 2018, 03:48

Replies: 195

737MAX Stab Trim architecture

Views: 133,187

Posted By jimtx

I'm confused. Humans have to be protected by MCAS...

I'm confused. Humans have to be protected by MCAS and STS but when the autopilot is used it doesn't care what the stick forces are? It just flys attitude and airspeed and whatever other constraints...

Forum: Tech Log

27th Nov 2018, 21:01

Replies: 195

737MAX Stab Trim architecture

Views: 133,187

Posted By jimtx

Wouldn't the increase in airspeed and high...

Wouldn't the increase in airspeed and high opposite elevator input fit the Boeing warnings for the 727 and older 737s that you may need to relax elevator input to allow trim in the same direction as...

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