BAE146QT
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747SP Empennage

Thu Mar 29, 2007 4:43 pm

Morning all.

Quick question - I know that, due to the shorter fueslage, the 747SP's vertical tail and rudder are enlarged (to make up for the shorter moment arm).

Is the same true of the horizontal surfaces?
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rendezvous
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RE: 747SP Empennage

Thu Mar 29, 2007 5:26 pm

As far as I know it is, from what I've seen anyway.


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legoguy
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RE: 747SP Empennage

Thu Mar 29, 2007 5:42 pm

Quoting Rendezvous (Reply 1):

The top of the tail looks like it's smaller so does this mean that the 747SP's emmenage consists of a normal 747 tail fin with an extension of some sort on top?
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DH106
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RE: 747SP Empennage

Thu Mar 29, 2007 5:54 pm

Both the fin and tailplane are extended / increased in area to counter the shorter moment arm.
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BAE146QT
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RE: 747SP Empennage

Thu Mar 29, 2007 8:48 pm

Thank you, folks. Made sense that it would be bigger but I couldn't really tell.
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Starlionblue
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RE: 747SP Empennage

Thu Mar 29, 2007 9:17 pm

Quoting Legoguy (Reply 2):
The top of the tail looks like it's smaller so does this mean that the 747SP's emmenage consists of a normal 747 tail fin with an extension of some sort on top?

Yes.


The rudder is also double hinged to give more deflection. If you look carefully you can see the split in the middle of the rudder.
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CCA
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RE: 747SP Empennage

Sat Apr 07, 2007 3:19 am

I think they have done the same to the LCF
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