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All Forums >> RC Airplanes >> S.P.A.D. Aircraft - Coroplast design >> spad dogfighter question ?
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spad dogfighter question ? - 3/17/2008 5:40:08 PM   
tubeman


 

Posts: 8
Joined: 12/29/2006
From: laval, QC, CANADA
Status: offline 		Hi, just a little question about the spad dogfighter with rudder control. it's normal when i use the rudder control the plane act like if the wing where dihedral ?

< Message edited by tubeman -- 3/17/2008 5:48:47 PM >
       Post #: 1

RE: spad dogfighter question ? - 3/17/2008 7:58:14 PM   
mclina


 

Posts: 583
Joined: 12/27/2006
From: Westford, MA, USA
Status: online 		I'm not sure I understand the question. Are you trying to build a Dogfighter with rudder instead of ailerons, or are you making a Dogfighter a 4 channel plane?

If you are building a Dogfighter with no ailerons, with a flat wing, with a rudder, I do not think it will handle very well, if at all. I think that for a rudder-steering plane to work, you need some dihedral to make it level off after turns.

There really isn't much benefit of adding rudder control to a Dogfighter unless you are putting landing gear on it and want to steer it on the ground.

If I am totally missing your point, please clarify.

Good luck.

_____________________________

If all of your friends were named Cliff, would you jump off them? - Hugh Neutron

(in reply to tubeman)
       Post #: 2

RE: spad dogfighter question ? - 3/18/2008 12:53:27 AM   
tubeman


 

Posts: 8
Joined: 12/29/2006
From: laval, QC, CANADA
Status: offline 		i built it with a 4 channel setup. The rudder control is for adding more acrobatic control. The wing is perfectlyu straight.

(in reply to mclina)
       Post #: 3

RE: spad dogfighter question ? - 3/18/2008 2:10:53 AM   
DLSmith2



Posts: 524
Joined: 8/25/2002
From: Nacogdoches, TX, USA
Status: offline 		Tubeman,

You won't get the same effect with a rudder on a flat wing as you do with a dihedral wing. Where you'll notice the rudder on the Dogfighter is starting or stopping a flat spin, hammerhead stall, etc. Otherwise, you probably won't really notice much improvement in performance without 3D sized control surfaces and max deflection, and a fatter, longer, and wider symmetrical wing.

Let us know what happens. You might have discovered a new use for the Dogfighter!

SPAD skies,

DL

(in reply to tubeman)
       Post #: 4

RE: spad dogfighter question ? - 3/18/2008 9:30:43 AM   
MrGreenSpeed



Posts: 621
Joined: 12/31/2002
From: Lakewood, NY, USA
Status: offline 		You may even get negative yaw ...input right rudder plane yaws left and vise versa.

pattern plane pilots would build the wing so they could add dihedral until the rudder would make the plane flat turn with no yaw effect.

Then reinforce the wing so it would handle the Gs of maneuvers they were preforming.
Jeff

(in reply to DLSmith2)
       Post #: 5

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