Swept Forward?  
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All Forums >> RC Airplanes >> Aerodynamics >> Swept Forward?
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Swept Forward? - 3/7/2003 9:58:36 AM   
a088008



Posts: 404
Joined: 6/14/2002
From: San Diego, CA, USA
Status: offline 		What, if any, advantage can be gained by employing a swept forward fin, and/or horizontal stabilizer? Assume that the wing is not swept forward. Also, how about a swept forward canard? And for completeness, what about swept forward wing-tip plates?

I've attached a picture of the types of configurations I'm interested in finding advantages for.

-Q.

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-Q
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Swept Forward? - 3/7/2003 10:33:33 AM   
BMatthews



Posts: 9005
Joined: 10/4/2002
From: Burnaby, BC, CANADA
Status: offline 		Do it for style reasons if you like but there's no real aerodynamic reason for doing it.

On the other hand the hinge lines wil be more complex.

The wing is a different story. With it's higher lift coefficients and greater spanwise airflow issues sweep is more of an issue.

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(in reply to a088008)
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Swept Forward? - 3/7/2003 1:51:42 PM   
Daniel Nelson


 

Posts: 87
Joined: 11/20/2002
From: Lancaster, CA,
Status: offline 		Stealth, maybe?

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Swept Forward? - 3/8/2003 12:32:06 AM   
banktoturn



Posts: 713
Joined: 8/22/2002
From: Bloomington, MN,
Status: offline 		a088008,

Apart from the tip plates, I think that moderate forward sweep would have little aerodynamic effect. Tip plates, if intended to reduce induced drag, seem to be more effective if positioned toward the rear of the wing chord. One reason that various surfaces are sometimes swept, forward or rearward, is to get the aerodynamic center of the surface where you want it, when the position of the root is somehow constrained. This sometimes leads to a surface that is swept, even though there is not a fundamental performance advantage to the sweep.

banktoturn

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       Post #: 4

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