PA110 wrote:afgeneral wrote:This is getting ridiculous, you don't have to be an aerospace engineer, 737 MAX maintenance worker, 737 MAX pilot or instructor, Boeing design engineer, FAA executive or whatever in order to have a valid opinion on this topic...
...we know they are a bit unstable by design
What on earth has led you to this conclusion? This is PRECISELY why a layperson's (lack of) understanding is so critically flawed. You can have all the opinions you want, but that doesn't make them correct.
The aircraft is not unstable by design. It's simply different. MCAS was introduced to narrow handling differences so that pilots could share type rating between NG and MAX.
Here is a good reference between the differences can be found HERE, written by an actual 737 training pilot
No....it is unstable because the weight and balance characteristics have been altered by the larger and heavier LEAP engines. Boeing has tried to use software that is either poorly executed or poorly documented or poorly communicated or all of the above. Relaxed stability is fine in military aircraft...but this aircraft is carrying thousands of passengers every day. It should be designed to be stable and not have any “gotcha” features.
Boeing was forced into the 737MAX due to the A320neo...and while the A320 platform had and still has considerable growth potential, the 737 is old. You can put makeup on a pig but it’s still a pig. If the handling of the 737MAX is so different that Boeing had to create software to make it feel the same as the NG just to get it on the same type Certificate, that says something right there about the stability and handling of the aircraft right out of the box.
From the link you posted:
The thrust line has changed from the NG because the engines had to be moved forward and up to accomodate the larger fan diameter. Any handling differences as a result of this have been tuned out by Boeing in the flight control system to make the types feel the same to crew. This was necessary for certification under the same type certificate.