Welcome to The FlyingGiants! - please login or click this bar to join our community...

 

Welcome to The FlyingGiants Community! We're all about fun, and inside you'll find the greatest, friendliest, and most helpful group of people around! If this is your first time visiting, please check out site, and click here to sign up! We hope to see you soon!!

Go Back   FlyingGiants > Giant Scale Planes > Full Scale Huckin'
Forgot your password? Create a new account


Reply
 
Thread Tools
Old 11-15-2006, 12:02 AM   #1
harv
it wont go any lower
 
harv's Avatar
 
Join Date: Feb 2006
Location: Canada Eh?
Age: 22
Posts: 2,884
Default question for matt

hi guys. i was just wondering, does the full scale cap 232 have dehedrial in the wing or is it flat(no dehedrial)??
\




harv
__________________
Borderline IMAC Team
Aztech Aero
Smart-Fly
harv is offline   Reply With Quote
Old 11-15-2006, 12:07 AM   #2
TonyThomasian
Rollin', Rollin', and Rollin'
 
TonyThomasian's Avatar
 
Join Date: Jan 2006
Location: Tigard,Oregon
Age: 23
Posts: 2,175
Send a message via AIM to TonyThomasian
Default Re: question for matt

It looks like it does have dehedrial.... from looking at these pics.... http://www.france-voltige.org/Photos/cap232_paris_1.jpg

http://pierphoto.free.fr/galeriesgen...col/_00003.jpg

http://www.nak.no/motor/foto/cap232-stor.jpg
__________________
Fromeco.org

ExtremeFlightrc.com
TonyThomasian is offline   Reply With Quote
Old 11-21-2006, 09:17 PM   #3
harv
it wont go any lower
 
harv's Avatar
 
Join Date: Feb 2006
Location: Canada Eh?
Age: 22
Posts: 2,884
Default Re: question for matt

it looks like it does, but very little.
__________________
Borderline IMAC Team
Aztech Aero
Smart-Fly
harv is offline   Reply With Quote
Old 11-21-2006, 09:23 PM   #4
maeu2003
on a vacation
 
Join Date: Jan 2006
Posts: 382
Send a message via MSN to maeu2003
Default Re: question for matt

its weird seeing my name in the title of a thread. i kinda freaked seeing it.
maeu2003 is offline   Reply With Quote
Old 11-21-2006, 09:35 PM   #5
Matt Chapman
Fly low & take chances !
 
Matt Chapman's Avatar
 
Join Date: Jan 2006
Location: Avondale, Pa
Age: 54
Posts: 610
Default Re: question for matt

the wing has what is called a double taper.
the wing gets thinner towards the tip, so the taper is what is making it look like dihedrail, but the top of the wing is flat across, and the bottom wing comes "up" . Kind of like buildinga wing up-side-down flat on the board. Does that make sence?

Last edited by Matt Chapman; 11-21-2006 at 10:02 PM.
Matt Chapman is offline   Reply With Quote
Old 11-22-2006, 12:59 AM   #6
Rolling Thunder
Tony Quist
 
Rolling Thunder's Avatar
 
Join Date: Jan 2006
Location: Glendale, AZ
Age: 50
Posts: 1,580
Default Re: question for matt

The wing on the Midwest Cap and Extra are built just like that. I believe the radiowave 300 is also this way.
Rolling Thunder is offline   Reply With Quote
Old 11-22-2006, 01:06 AM   #7
Judge
Sink Stinks!!
 
Judge's Avatar
 
Join Date: Jan 2006
Location: Orange County, CA
Age: 59
Posts: 5,816
Default Re: question for matt

Quote: Originally Posted by Matt Chapman
View Post
the wing has what is called a double taper.
the wing gets thinner towards the tip, so the taper is what is making it look like dihedrail, but the top of the wing is flat across, and the bottom wing comes "up" . Kind of like buildinga wing up-side-down flat on the board. Does that make sence?
Most all pattern planes back in the 60's and 70's were built the same way. We called it "effective dihedral". Built them just like Matt says, upside down on a flat board.
__________________
Team Futaba
I get free Tee shirts, so I must be lying

Judge is online now   Reply With Quote
Old 11-22-2006, 01:44 AM   #8
Toro
Bad-ass Super Contributor!
 
Toro's Avatar
 
Join Date: Jan 2006
Age: 42
Posts: 2,379
Send a message via Skype™ to Toro
Default Re: question for matt

Quote: Originally Posted by Judge
View Post
Most all pattern planes back in the 60's and 70's were built the same way. We called it "effective dihedral". Built them just like Matt says, upside down on a flat board.

Bill,

you remember the 60's ?

love ya...
Toro is offline   Reply With Quote
Old 11-22-2006, 11:33 AM   #9
teryn
Doo It! Doo It!
 
teryn's Avatar
 
Join Date: Jan 2006
Location: Tucson, AZ, USA
Age: 41
Posts: 260
Default Re: question for matt

[airfoil] "thickness taper" is what you are referring too (proper terminology). the other taper has to do with the chord.

Dihedral produces a rolling moment in the presence of a sideslide. I am surprised that there is no dihedral on this plane. I wonder if thickness taper still contributes to the dihedral effect.

Quote: Originally Posted by Matt Chapman
View Post
the wing has what is called a double taper.
the wing gets thinner towards the tip, so the taper is what is making it look like dihedrail, but the top of the wing is flat across, and the bottom wing comes "up" . Kind of like buildinga wing up-side-down flat on the board. Does that make sence?

Last edited by teryn; 11-22-2006 at 12:32 PM.
teryn is offline   Reply With Quote
Old 11-22-2006, 04:43 PM   #10
Matt Chapman
Fly low & take chances !
 
Matt Chapman's Avatar
 
Join Date: Jan 2006
Location: Avondale, Pa
Age: 54
Posts: 610
Default Re: question for matt

Dihedral make the plane more stable. Something we don't want in an aerobatic plane. Keep in mind we also fly inverted and ou don;t want to be fighting dihedral while inverted.
On a Cessna the dihedral will allow the rudder to keep the wings level and even roll in and out of turns. On a CAP, Extra, Suke ect. you can't, nor do you want to do that. However; on Extra's, a certified plane the spades are tipped. This will creat a slight movement in roll giving you the ability to keep the wings level, or get out of a spin and return to level. (required for FAA certification)
Just some basic info for those who care.
MC
Matt Chapman is offline   Reply With Quote
Old 11-22-2006, 07:02 PM   #11
teryn
Doo It! Doo It!
 
teryn's Avatar
 
Join Date: Jan 2006
Location: Tucson, AZ, USA
Age: 41
Posts: 260
Default Re: question for matt

Matt, you are correct. I thought that there would be between 0 and 1 deg at least to offset the roll instability due to the CG being above the wings. Most low wings have this, but of course we don't want the plane to be too stable for aerobatics. Interestingly, the bigger airplanes like the C-5 and C-17 have anhedral in their wings. The purpose of this is to damp out the so-called Dutch Roll mode instability found on some high wing airplanes.

Are the spades those shovel like things that hang down below the wing? I understand that those add a boost to help the pilot move the ailerons udner demanding circumstances.
teryn is offline   Reply With Quote
Old 11-22-2006, 07:25 PM   #12
Matt Chapman
Fly low & take chances !
 
Matt Chapman's Avatar
 
Join Date: Jan 2006
Location: Avondale, Pa
Age: 54
Posts: 610
Default Re: question for matt

Yup, the "spade" or "shovel" are a form of "power steering" Without them on my plane at red line (240mph) the stick is very heavy. Two hands needed to move it, and only a little is possable. The way my plane is set up, I can move the stick all the way to the stop at red line with just one finger. I have a strong center, but that is easy to get through, and once out, the rest is very easy. The plates are used to assist in stick forces and centering. By changing the incidence on the plate you can change both stick force, stick centering, break out force and even roll rate. Set them up wrong and you can really have your hands full in the push, or negitive "G".

Again, just my 2c....
Matt Chapman is offline   Reply With Quote
Old 11-22-2006, 07:31 PM   #13
teryn
Doo It! Doo It!
 
teryn's Avatar
 
Join Date: Jan 2006
Location: Tucson, AZ, USA
Age: 41
Posts: 260
Default Re: question for matt

I LOVE this. I've participated in two recent threads here, this one included, with real, useful, relevant information coming from knowledgable people (who know what they are talking about), not contaminated with conjectures and baseless information. What a breath of fresh air! It is such a pleasure...

wow, I didn't know they were that important and useful. Always wondered, thank you.

Last edited by teryn; 11-22-2006 at 07:37 PM.
teryn is offline   Reply With Quote
Old 11-22-2006, 07:53 PM   #14
harv
it wont go any lower
 
harv's Avatar
 
Join Date: Feb 2006
Location: Canada Eh?
Age: 22
Posts: 2,884
Default Re: question for matt

Quote: Originally Posted by Matt Chapman
View Post
the wing has what is called a double taper.
the wing gets thinner towards the tip, so the taper is what is making it look like dihedrail, but the top of the wing is flat across, and the bottom wing comes "up" . Kind of like buildinga wing up-side-down flat on the board. Does that make sence?
yup, makes scence, ill have to take a look at my lanier and see how it is. hehe.

when flying aerobatics full scale, are the g forces like riding a roller coaster, or higher.
__________________
Borderline IMAC Team
Aztech Aero
Smart-Fly
harv is offline   Reply With Quote
Old 11-22-2006, 10:03 PM   #15
Matt Chapman
Fly low & take chances !
 
Matt Chapman's Avatar
 
Join Date: Jan 2006
Location: Avondale, Pa
Age: 54
Posts: 610
Default Re: question for matt

Teryn....hold on now...please don;t confuse me for a person that knows what their talking about!!
The spades are sometimes also used for dynamic balancing in conjunction with the above issue. My plates are REQUIRED for flight due to balance. If you take off the control pushrod, my airlerons will balance a little leading edge down... 110% balanced. Without this, you could expect control flutter at higher speeds.
more usless information!!
MC
ps...and glad to be part of a useful/interesting thread.
Matt Chapman is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
h9 260 repair question go29kev General Discussion 2 04-14-2008 12:35 PM
Question on my set-up StPeteFlyer Onboard Electronics 3 11-29-2007 11:42 PM
3W 28CS choke question & Ign. question zzw26n Gas Engines 3 04-10-2007 09:14 PM
Covering Seam question exeter_acres Workshop Skills 5 02-12-2007 05:54 PM
question on RPM's Mr.E Gas Engines 6 04-20-2006 09:17 PM


All times are GMT -5. The time now is 08:35 PM.

All Flyinggiants.com content copyright 2006-2014 by RCGroups.com, LLC except where otherwise indicated. The Flyinggiants.com logo is a trademark of RCGroups.com, LLC.
Please report any misuse of our trademarks or copyright violations using the contact form.
RCGroups Network :: RCGroups :: Crackroll :: RC Cars

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.