Originally Posted by
CONF iture
I've no clue either but they build some protections for the 330 and sisters ... there must be a reason, a way to allow some structural weight saving maybe, or is it just for the fun to take control away from pilots ...
CONF,
As I said, I'm an ancient...... Concorde.... remember?
We didn't call them "protections" at the time.
MAX CRUISE was simply an autopilot mode, that kept the aircraft within those three basic limitations: Mach 2.04, Tt 127° C, and IAS 530 kts.
Mostly there to make sure we could use the aircraft again next time.... or more seriously, to make sure it would would stay within the certification limits, to meet the certified supersonic cycles requirements.
And yes, we went up to Mach 2.23, and we did not use that aircraft (Delta Golf) again for commercial flight afterwards, even if it was thought about seriously at one time.
I've seen M 0.8 or suchlike mentioned for the A330. Was she certified to M 0.9 and beyond (as she should have been)? Or DID they "save some structural weight" somewhere?
CJ