777W ride in turbulence
 

Hi folks, just recently paxed (in the aft) of various 777W flights with different carriers/aircraft ages, and surprised how you seem to feel every single bump, no matter how light or moderate, the whole thing just jolts. I read about the turbulence suppression system, but it doesn't seem to be doing that good of a job. The A320 family that I fly also can feel harsh but it seems to do a better job in comparison....

Any 777 drivers have any idea whats going on??

Don't mean to state the obvious, but the back end of a 777 is farther from the CofG than the back end of an A320. :O

True, but doesn't explain why the thing just unquestionably rocks from side to side at the slightest bump compared with other (Airbus + Boeing) long haul aircraft of the same size.

I always thought it was a bit poor in turbulence too - not enough speed stability.

Well it's moving a hell of a lot faster than the A320 for one thing....

About 8% faster in cruise, in fact.

M085 vs M078 makes a big difference in turbulence....at least I assume it does with all the whining you hear coming off the NAT

the lateral oscillation due to the gust suppression system has been talked about quite a bit.

I sit at the pointy end, flying both the 63m & 73m long variants. I tend to spill more coffee on the longer ones. 😯

Easy. Pay a bit more and travel nearer the middle. ;)

I have noticed on the -300 that quite low amplitude lateral disturbances, nowhere near worth putting the seatbelt signs on for, are just the right frequency to “pump” oscillations in cups and glasses to the point that the liquid makes a determined bid for freedom. Quite annoying in the middle of the night when you’re not aware of it building up until you get drenched with cold tea...

resonance
 

Good example of resonance in cups and glasses with the plane oscillation:) (Where is smiley "wet by cold tea"?)

All I know is a few years after getting on the 747 I suddenly realised I never seemed to hit any turbulence any more... :}

It's true, the modal gust suppression leaves something to be desired in the -300 combined with what I guess is a slightly too large vertical stabiliser for the fuselage length, all turbulence seems to be translated into tail waggle :}

Too large ?


It always looked way too small to me, that's the problem.

777 has a much better wing in turbulence than the 320.

Sat in the rear a couple times across the Pacific in the 777. Seems to be a nice, rubber like bouncing motion in turbulence. Found it relaxing and put me to sleep. Personally they should 'make it bounce' like that when it's smooth.


More concerned with flying so long over water with 'only' 2 engines. Bring back the 747 I say. Who cares if it costs a little more to fill up at the service station?

You mean, apart from the manufacturers, airlines and 99% of fare-paying passengers?

99% of passengers care if it costs a little more to run? Ok. :rolleyes:

They care when it gets reflected in the cost of their ticket :=

Cut back the airline's CEOs and other managers salary and bonus? Easy! :ok: