Boeing 737 max may have problems or do pilots? In any case was wondering if pilots lose elevator control, can they use ailerons as elevons to prevent crashing. Or in any big airliner for this matter.
Announcement
Collapse
No announcement yet.
Boeing 737 max
Collapse
X
-
Elevator is usually hydraulic powered, it will have 2 backup systems minimum and trim will also function to control pitch and is on a separate systems. The problem is the CG envelope is rather broad, and the elevator has to have authority through a broad range of air speeds as well. Elevons would not create the tail down force needed to control pitch, but they could allow the craft to descend or climb, if it were trimmed at some specific attitude. It would also depend on whether the controls are ‘fly by wire’ or not, and in which case system failures may be handled through a computer which can include mixing of control surfaces but not to the extent you mentioned- It gets complicated and to my knowledge such systems are not used in Transport Category aircraft. Notice the tail surfaces on most are fully rotating stabilizers. As speeds increase toward transonic the center of lift moves aft and the tail must have more down force to prevent what is called Mach tuck (nose down pitch moment at high speed)
So, to answer your question - not that I know of, but I don’t know everything.
-
Not following checklists is a common problem, and it usually because the operator is trying to shortcut.
we actually can call our test pilots to find out why any given item on a list appears in what order...and what may happen if you do it differently.
It never cease to amaze me when a new owner says.”that checklist is sooo long...”
My response is “what procedure will you tell them you used at the hearing?”
- Likes 1
Comment
-
Now that the whole fleet is grounded, It sounds like some of the problems are concerning its flight control board. I was reading where pilots are allowed to disengage this in emergency situations. I hope the investigators sort this matter out. I fly only once a year. It's nice having a piece of mind knowing your safe.
Comment
-
Originally posted by Skyboom View PostNow that the whole fleet is grounded, It sounds like some of the problems are concerning its flight control board. I was reading where pilots are allowed to disengage this in emergency situations. I hope the investigators sort this matter out. I fly only once a year. It's nice having a piece of mind knowing your safe.http://AviationExplorer.com - NEWLY EDITED VERSION As part of the Dash 80s demonstration program, Bill Allen invited representatives of the Aircraft Industri...
- Likes 1
Comment
-
Appears directly related to the MCAS system which combats excessive AOA by forcing a nose down attitude. Problem in both crashes appears the system had faulty sensors thinking the planes were in excessive AOA. Combined with pilot error in trying to correct the issue/lack of training or what-not, ended in tragedy and nearly 400 lost lives.
NEVER EVER EVER should automation overrule the pilot. EVER! These systems are supposed to make flying more safe and intuitive while lessening the task load and burden level of pilots but they should ALWAYS be able to be shut off if the pilot needs to override the system for any reason.My YouTube RC videos:
https://www.youtube.com/@toddbreda
Comment
-
Originally posted by Aros.MotionRC View PostAppears directly related to the MCAS system which combats excessive AOA by forcing a nose down attitude. Problem in both crashes appears the system had faulty sensors thinking the planes were in excessive AOA. Combined with pilot error in trying to correct the issue/lack of training or what-not, ended in tragedy and nearly 400 lost lives.
NEVER EVER EVER should automation overrule the pilot. EVER! These systems are supposed to make flying more safe and intuitive while lessening the task load and burden level of pilots but they should ALWAYS be able to be shut off if the pilot needs to override the system for any reason.
Comment
-
I know, right? It's crazy. There's something to be said for good ol' fashioned stick and rudder/analog flying.My YouTube RC videos:
https://www.youtube.com/@toddbreda
- Likes 1
Comment
Comment