777way
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A332 Tails Some Taller Than Others?

Mon Sep 17, 2007 9:00 pm

Are some A332 tails taller and narrower at the top than other A332, I'm not confusing the aircrfat with A333 which has a shrter tail thats broader at the top, or its just that in photos that seems to be the case.

[Edited 2007-09-17 14:34:10]
 
LY777
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RE: A332 Tails Some Taller Than Others?

Mon Sep 17, 2007 9:06 pm

Can you send a photo to see, please?
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BlueSky1976
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RE: A332 Tails Some Taller Than Others?

Mon Sep 17, 2007 9:08 pm

A330-200 does have taller tail than A330-300.
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OHLHD
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RE: A332 Tails Some Taller Than Others?

Mon Sep 17, 2007 9:13 pm

Maybe it is depending on the angle the photographer is taking the pic.  Smile
 
USADreamliner
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RE: A332 Tails Some Taller Than Others?

Mon Sep 17, 2007 11:22 pm

Quoting BlueSky1976 (Reply 2):
A330-200 does have taller tail than A330-300

Really? Or it looks like, because the body is shorter?

Not trying to be a smart ass, just asking.
 
andrewtang
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RE: A332 Tails Some Taller Than Others?

Mon Sep 17, 2007 11:36 pm

A330-200's tail is indeed bigger and taller than the A330-300. That's because a larger tail is required after shrinking the fuselage size.

Same theory applies in the making of 747SP.
 
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kc135topboom
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RE: A332 Tails Some Taller Than Others?

Mon Sep 17, 2007 11:39 pm

Quoting Andrewtang (Reply 5):
A330-200's tail is indeed bigger and taller than the A330-300. That's because a larger tail is required after shrinking the fuselage size.

All this time I thought the A-330-200 came out before the A-330-300 did.  Wow!
 
EI321
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RE: A332 Tails Some Taller Than Others?

Mon Sep 17, 2007 11:41 pm

Quoting USADreamliner (Reply 4):
Quoting BlueSky1976 (Reply 2):
A330-200 does have taller tail than A330-300

Really? Or it looks like, because the body is shorter?

Nope it is actually taller. This is often required when you shorten a design. The A318 and 747SP also have higher tail extensions than the standard designs.
 
cloudyapple
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 1:13 am

When the fuselage is shortened, the yawing moment arm about the CoG is shortened thus the force is bigger. (re:secondary school physics). So a bigger fin is required to counter the force.
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PADSpot
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 1:17 am

Quoting KC135TopBoom (Reply 6):
All this time I thought the A-330-200 came out before the A-330-300 did. Wow!

Nope the -300 is from 1993 and the -200 from 1998.
 
777way
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 2:14 am

I was asking about A332 only, I know the A333 has a shorter tail, anyways the A332 tail confusion must be related to photo angles.
 
CJAContinental
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 2:20 am

Quoting EI321 (Reply 7):
Nope it is actually taller. This is often required when you shorten a design. The A318 and 747SP also have higher tail extensions than the standard designs.

I am curious as to why this is?
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egnr
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 3:57 am

Quoting CJAContinental (Reply 11):
I am curious as to why this is?

It's due to moments. Consider the aircraft's fuselage as a lever...

It is easier to turn a larger/longer lever than it is a shorter one. This is why people use extension bars on wrenches to undo tight nuts/bolts. A moment is turning force, and it is calculated by the force applied multiplied by the distance from the pivot point. Therefore, on a longer aircraft, the tail can be shorter than on a shorter-fuselage variant to maintain the same level of stability. Also, on the larger tail, the rudder will also be larger to apply more force when used.
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cloudyapple
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 4:47 am

Quoting CJAContinental (Reply 11):
I am curious as to why this is?



Quoting Cloudyapple (Reply 8):
When the fuselage is shortened, the yawing moment arm about the CoG is shortened thus the force is bigger. (re:secondary school physics). So a bigger fin is required to counter the force.
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mop357
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 2:20 pm

Quoting EI321 (Reply 7):
Nope it is actually taller. This is often required when you shorten a design. The A318 and 747SP also have higher tail extensions than the standard designs.

Does this also apply to the A 343 and the A 346? I always thought the 346 had a short tail but I thought it was due to the comparison of its length. The 343 came out about 8 years before the 346. How did they work that design?
 
ag92
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 8:30 pm

Quoting PADSpot (Reply 9):

Nope the -300 is from 1993 and the -200 from 1998.

Thanks for clarifying that

Also thanks for teaching me something new, in how the tails of shorter aircraft of the same family is taller than others  Smile

Regards
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MEA330
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 9:15 pm

Airbus introduced in 2003 improvements to the A330 line (LCD screens, updated interior introduced from the A340-600 line).On the A330-200 a new Fly By Wire rudder control system was introduced with a smaller rudder than older A332's.
The first A332-203 (improved) was for EVA.
777way all EK A332 have the old large fin, while the new Etihad A332's will have the smaller one
 
777way
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 9:23 pm

Taller thinner top


View Large View Medium
Click here for bigger photo!

Photo © Dominik Zimmermann




Shorter thicker top

View Large View Medium
Click here for bigger photo!

Photo © MUCpictures


So I was right.

[Edited 2007-09-18 14:43:47]
 
777way
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RE: A332 Tails Some Taller Than Others?

Tue Sep 18, 2007 9:49 pm

Quoting MEA330 (Reply 16):
Airbus introduced in 2003 improvements to the A330 line (LCD screens, updated interior introduced from the A340-600 line).On the A330-200 a new Fly By Wire rudder control system was introduced with a smaller rudder than older A332's.
The first A332-203 (improved) was for EVA.
777way all EK A332 have the old large fin, while the new Etihad A332's will have the smaller one

Thanks for this information, I noticed it on EVA first before on others like KLM and Air Algerie
 
CJAContinental
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RE: A332 Tails Some Taller Than Others?

Wed Sep 19, 2007 6:48 am

Quoting EGNR (Reply 12):

Cheers, thanks a lot, I understood your answer really well, I study mechanics, so I could completely relate.
Work Hard/Fly Right.