Reply to post: Alternate 737MAX design kludge

Deadly 737 Max jets no longer a Boeing concern – for now: Production suspended after biz runs out of parking space

YARR
Boffin

Alternate 737MAX design kludge

Correct me if I'm wrong, but the pitch up issue that MCAS addresses happens because the larger diameter engines are positioned further forward of the wing (and higher up). This means the thrust is acting from a different point than earlier 737 models. High thrust causes a turning moment about the plane's centre-of-mass, requiring elevators to compensate.

Why did they not put a small duct on the back of the engines, so the thrust acts from the same point as earlier 737 models? Ducts must be practical since they were used in the Lockheed Tristar.

The thrust reverser could be moved to the end of the duct, or be directed through a flap in the duct.

POST COMMENT House rules

Not a member of The Register? Create a new account here.

  • Enter your comment

  • Add an icon

Anonymous cowards cannot choose their icon

SUBSCRIBE TO OUR WEEKLY TECH NEWSLETTER

Biting the hand that feeds IT © 1998–2020