Re:Active turbulence cancellation makes bumpy flights 80% sm...
by mlyle on Tuesday December 12, 2023 @03:30PM
(#38617994)
> I am not aware that the aiframe is the main reason why planes are taken out of service
This is true--- these days. We've been tending to replace planes before the airframe life limits are met.
> I can't remember an accident of a major airliner as a result of the airframe failing post the 1970s.
Well, on the other hand, this is mostly true because airframe life limits and expensive inspection programs that we established after horrific accidents.
> Will be interesting to look at fatigue of the control surfaces though, if they get used many times more per flight to adjust for minor turbulences.
Control surfaces are on bearings and have, in general, a lot of excess strength to minimize internal deflection. Even if there were a trade in wearing out control surfaces faster, they are a more easily inspected and replaced part of the airplane.
This is true--- these days. We've been tending to replace planes before the airframe life limits are met.
> I can't remember an accident of a major airliner as a result of the airframe failing post the 1970s.
Well, on the other hand, this is mostly true because airframe life limits and expensive inspection programs that we established after horrific accidents.
And things like https://en.wikipedia.org/wiki/Aloha_Airlines_Flight_243 (1988).
> Will be interesting to look at fatigue of the control surfaces though, if they get used many times more per flight to adjust for minor turbulences.
Control surfaces are on bearings and have, in general, a lot of excess strength to minimize internal deflection. Even if there were a trade in wearing out control surfaces faster, they are a more easily inspected and replaced part of the airplane.