vasilek
Posts: 36
Joined: Wed Aug 25, 2004 8:01 am

Plane Shaking. Is It Normal?

Wed Oct 27, 2004 1:20 pm

Recently I had my first experience flying B772. To my amazement the plane was all shaking during the take off and the overhead bins over the center seats were moving fast from one side to another. Is it normal for a jumbo jet, cause I never noticed such an occurrence on the single aisle planes?

[Edited 2004-10-27 06:35:55]
 
andz
Posts: 7626
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RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 1:26 pm

I've seen that on 747s plenty times, not on a 346 though. Once you leave the ground and the gear is up it goes away, then turbulence takes over!
After Monday and Tuesday even the calendar says WTF...
 
Iberia340600
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RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 1:29 pm

Obviously you would not see the center bins move on a single aisle airplane because there are no center bins...hence a single aisle plane. I have seen that happen on all widebody aircraft...its normal.
Visca Barça!!
 
vasilek
Posts: 36
Joined: Wed Aug 25, 2004 8:01 am

RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 1:34 pm

Iberia340600, you have a point  Smile/happy/getting dizzy
 
Iberia340600
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RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 1:37 pm

Just pointing out the obvious  Wink/being sarcastic It also depends how the carrier has the center bins mounted. If they are flush with the cieling..you wont see them shake much..if they are top mounted...you will.....laws of gravity.
Visca Barça!!
 
jetboyflyhi
Posts: 173
Joined: Thu Oct 07, 2004 1:30 pm

RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 1:52 pm

Well think of this: runways have bumps and so the aircraft reacts to the bumps. I am a flight Attendant and when on the same aircraft for several take off and departures some runways are "rough" and some are "smooth" also the age of the aircraft makes a differance , they get "worn" in the plastic area as the bins but, in my flight attendant thoughts I can assure you, it's NORMAL. Happy Flying  Smile
Chicken or Beef?
 
vasilek
Posts: 36
Joined: Wed Aug 25, 2004 8:01 am

RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 2:07 pm

I meant during the take off when already in the air. But now I understand it is because of the light turbulence and is happening to the single aisle planes as well, just not so "dramatically" because of the smaller size and the absence of center seats, therefore bins.  Smile/happy/getting dizzy

[Edited 2004-10-27 07:23:18]
 
ua777222
Posts: 2987
Joined: Mon Dec 22, 2003 11:23 am

RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 2:57 pm

Obviously you would not see the center bins move on a single aisle airplane because there are no center bins...hence a single aisle plane. I have seen that happen on all widebody aircraft...its normal.

I hope you know the 777 is a twin aisle a/c right? And that you just stated that to inform him that he won't see a center bin on any a/c with one aisle... If not the 777 is ALWAYS a twin aisle a/c.

Just to let you know, don't want to be a bug.

Thanks Again!

UA777222
"It wasn't raining when Noah built the ark."
 
jetboyflyhi
Posts: 173
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RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 3:11 pm

I now rest my case without scientific verifocation ! Happy Flying thank you UA777222
Chicken or Beef?
 
Leskova
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RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 3:27 pm

UA777222, if you read the first post - the thread starter, not the first reply - up to and including the last sentence (especially the part after the comma), you'll find out why Iberia340600 mentions single aisle planes...

Regards,
Frank
Smile - it confuses people!
 
bill142
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RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 5:57 pm

When I landed in CNS in 1998 on a QF 767 I noticed that the overhead bins moved around quite alot. So did the aircraft in general. I put it down to a runway that had lots of bumps and probably needed resurfacing.
 
ZKSUJ
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RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 6:02 pm

Yeah, happened to me on a 744. Very bumpy and a thudding noise at the point of rotation. Then a loud shudder and the overhead compartment opened. After that, it was smooth sailin.
 
6thfreedom
Posts: 2622
Joined: Thu Sep 30, 2004 11:09 am

RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 6:08 pm

from my experience having flown a fair bit in Y class, you get to feel the shake, rattle and rolls more if u are seated in the last few rows..

dont know about the A346, but definately my experience on B744 and B777
 
aerosol
Posts: 497
Joined: Mon Oct 23, 2000 10:31 pm

RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 7:07 pm

I know that shaking from other planes as well. Always thought of it as a mini-stall, because in transion the angle of attack might not be big enough to lift all the weight.

Maybe experts can help.
 
MAS777
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Joined: Sun Jul 11, 1999 7:40 am

RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 9:38 pm

This has been discussed many times before and is due to the wheels rotating on the main gears after lifting from the ground. It stops as the wheels stop rotating and is retracted into the wheelbase. Boeing 747s (and to some extent 777s) seem to be particularly prone to this phenomenon.
 
FoxBravo
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RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 10:04 pm

I believe the big "bang" you sometimes hear on rotation on 747s (ZK-SUJ, reply #11) is from the shocks on the landing gear--on the ground, they are compressed by the weight of the plane, but as soon as you're off the ground, they are free to fall to their fullest extent.

Then, as Mas777 said, you feel a sort of shudder as the brakes are applied to stop the wheels from spinning as they retract into the wheel wells.

To get back to the topic, though, I have seen the center bins on widebodies shake all over the place, not only during climb but whenever there is turbulence. As others have said, it's normal.
Common sense is not so common. -Voltaire
 
AMS
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RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 11:13 pm

FRA used to have really bumpy runways.....I just passed through FRA 2 days ago, and the runways have improved a lot!......anyway if the airplane is shaking during take-off, then it has to do with the runway condition.

Regards,
AMS
 
LordHowe
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Joined: Fri Jan 24, 2003 10:52 pm

RE: Plane Shaking. Is It Normal?

Wed Oct 27, 2004 11:20 pm

About this shaking after take off and during the flight in different parts of an aircraft. Yes indeed it sometimes is shaking a lot especially in the back of an 747. Because of some experiences many years ago we started calling them "tail twisters". But then I also realized that the twisting was at its worst when the aircraft had heavy tail winds during the flight. That is why I always try to get my seat on the first possible rows in economy class. Its much more quiet and much less shaking.

Best regards,
LordHowe
Lord Howe Island - The Last Paradise
 
boeingpride800
Posts: 391
Joined: Tue Jun 29, 2004 10:05 am

RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 2:01 am

That is normal. Especially on aircraft with powerfull engines such as this one.
 
ewr767
Posts: 85
Joined: Thu Oct 28, 2004 2:01 am

RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 2:23 am

As a flight attendant i fly the 777 quite frequently. And it is very common when i am sitting in the back on my jumpseat, to see the overhead bins in the center actually look like there swinging back and forth. I actually have seen the fuselage flex also, during strong winds. This would be at slow speeds obviously.
 
bongo
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RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 4:52 am

I've noticed that too... and I believed it was because some sort of runway bad conditions  Innocent  Confused
MDE: First airport in the Americas visited by the A380!
 
airgeek12
Posts: 725
Joined: Tue Oct 26, 2004 8:02 am

RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 5:56 am

Shaking is always usual on most dual-isle planes. I have expierenced lots of shaking on twin-isle planes such as the 767, 777, and 747. This is usually caused by bumps on the runway.

I'm not exactly sure why you fell it more in the twin-isle than single isle. Must have something to do with weight or something.

Some shakes right after take-off may be the wings adjusting to the air and sutch, other times it may be the landing gear folding up into the fuselodge.
 
VonRichtofen
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RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 7:23 am

I've noticed this on all my widebody flights too, so it's normal. The best though was a NW 747-200 taking of from NRT. That plane was shaking like crazy and groaning like Godzilla on the take off roll. Even the guy beside me said "This is a beast!" LOL Big grin

Kris
 
MissedApproach
Posts: 678
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RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 8:19 am

The only time I ever saw real shaking was in one of Air Transat's L1011s on landing. I thought a couple might've popped open, but they didn't. The only other movement of the luggage bins I've seen I would classify as "vibration" rather than shaking. Entirely normal stuff.
Can you hear me now?
 
AEROFAN
Posts: 1413
Joined: Wed Aug 04, 2004 9:47 am

RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 8:36 am

The 747 that VS got from Air Newzealand used to shake a bit. At least the one that I flew on. Didn't like it
 
whitehatter
Posts: 5180
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RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 9:33 am

A lot of it is deliberately engineered in.

If the bins were rigid, then the catches and frames would soon crack or distort. It's good engineering to allow some flexibility into both cabin furniture and the airframe itself as it cuts down on stress and fatigue. Especially in the sort of environment found inside an airliner with its constant takeoffs, landings and turbulence from whatever source.

So it doesn't bother me in the least when I see it. If the bins come open and I get whacked on the head by a bottle of Duty Free then I might change my mind...
Lead me not into temptation, I can find my own way there...
 
WJA73G
Posts: 162
Joined: Tue Jun 01, 2004 10:03 am

RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 12:42 pm

That action is not un-common in older 737s, 732s, 733s, etc...

WJA73G
 
ual4me
Posts: 69
Joined: Sat Apr 03, 2004 12:29 pm

RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 2:21 pm

BKK has horrendous taxiways-I was in a TG A300 and we were bouncing around like I had never felt before. Even the guys behind me remarked about how much bouncing there was.

This was in Business class too-first row. Maybe because I was right over the front gear?
Where will this amount of cash take me?
 
User avatar
Starlionblue
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RE: Plane Shaking. Is It Normal?

Thu Oct 28, 2004 11:58 pm

Just pointing out the obvious It also depends how the carrier has the center bins mounted. If they are flush with the cieling..you wont see them shake much..if they are top mounted...you will.....laws of gravity.

Well, I noticed that on the 777 the center bins are, for obvious reasons, not attached to structures in the center such as the galleys. Since the fuse deforms with vibrations, the center bins follow the top of the fuse around (right to left mostly) independently of the galleys, which follow the cabin floor around. The latter seems still since it moves relatively little compared to the seats.

The effect is a bit disconcerting since the bins seem to shake a lot relative to the galleys, but I assume they hardly move relative to the top of the fuse.
"There are no stupid questions, but there are a lot of inquisitive idiots." - John Ringo
 
rossyboy
Posts: 68
Joined: Wed Oct 27, 2004 11:08 pm

RE: Plane Shaking. Is It Normal?

Fri Oct 29, 2004 3:01 am

I read somewhere that the aircraft shakes because of the spinning wheels on the landing gear at take-off. They are spinning at over 100 mph you know. The brakes are automatically applied which causes vibration during the first minutes after take-off. The overhead bins must have been loose though. It's a good job they didn't fall!  Smile
Ross X
 
ammunition
Posts: 875
Joined: Sat Feb 16, 2002 6:25 am

RE: Plane Shaking. Is It Normal?

Fri Oct 29, 2004 3:38 am

The IL-96 is very shakey during both, landing and take off.
So much so in fact, that on my last flight, one of the ceiling panels came off and fell down, just above the passangers seated in the middle section of the plane, hanging off about 6 inches obove the heads.
The flight was SU something from Moscow to london on the 21st of october,
the whole cabin ceiling shakes during taxi take off and landing, this is especially noticable in the IL-96 with it being a widebody aircraft with no centre bins.
Just for the record- that plane is humongous!!! a fantastic piece of machinery, the space in the aisles was like nothing ive seen before, a food cart and a person can fit by very comfortably, side by side. The seating configuration made for a very roomy and comfy flight, the 333 config is fantastic, but im sure they could squeeze another seat in the middle if they really wanted.

How does the cabin width compare to other widebodies?

Aeroflot did well on this particular flight- i got a smile out of some of they flight atendents.
Generally an excellent flight but no entertainment.

back to the main question... ive experienced it on many aircraft, especially the big ones and the russian birds, namely the IL-96 and the IL-62 (IL-62 probably due to age)
Saint Augustine- 'The world is a book and those who do not travel, read only 1 page'
 
katanapilot
Posts: 157
Joined: Fri Oct 01, 2004 2:25 pm

RE: Plane Shaking. Is It Normal?

Fri Oct 29, 2004 10:14 am

A300's in heavy turbulence are an absolute riot. those bins and the ancient RGB projectors look like they're going to just snap and crush everyone in the center seats. yeehaw!

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