Boeing is likely to decide by year end whether to go ahead with a larger version of its 737 MAX, one that would replace the current -9 MAX with a bigger model referred to as the -10 MAX, a leading airplane leasing executive said Monday.
ALC CEO John Plueger is quoted as saying Boeing is considering the -10MAX as seriously as the MOM/NMA.
Some more juicy bits:
The bigger airplane will need bigger engines, and then taller main landing gear to keep the engines high enough off the ground.
Plueger said the current -10 MAX studies consider replacing the LEAP-1B engine from CFM International on the -9 MAX model with a variant of the bigger LEAP-1C engine. This engine was originally designed to power the forthcoming C919 single-aisle jet built by COMAC in China.
Because these engines are heavier, the wing will need reinforced. And because the landing gear is longer, Boeing will have to re-engineer it to fit into the wheel well.
Ref: http://www.seattletimes.com/business/bo ... airplanes/
And Flight Global's Steven Trimble reports:
So, to install a new engine with another 8in of fan diameter, Boeing would need to raise the main landing gear by several inches, says 737 Max chief project engineer Michael Teal.
Easier said than done. The main gear of the 737 Max retract into the centreline of the fuselage. The fuselage isn’t getting any wider, so Boeing would have to redesign the gear. As it retracts after take-off, the gear strut would need to telescope inward by several inches to fit into the same space in the fuselage. Upon landing, the extending landing gear would also need to telescope outward before locking into position.
“It would be an engineering challenge, but I don’t think it would be a major deal. You could do it,” Teal says.
Seems the pendulum could be swinging away from the MOM to the MadMax?
Taller gear doable, bigger engines already available, who knows?
Ref: https://www.flightglobal.com/news/artic ... le-426628/