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Old Aug 31, 2014, 07:23 PM
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335driver's Avatar
USA, TX, Round Rock
Joined Dec 2006
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Question
Ailerons/elevons ?

OK, I got these plans for a He-1078B and while they're in Portuguese using a translator online I got it figured for sizes, material etc. The plans do not detail the ailerons, elevators or elevons. I'm thinking that they are shown at the ends of the wing, it's a flying wing but are they ailerons, elevators or elevons. Check out the pic below, the plans are very close to picture. The large control inboard is labeled FLAP on the plans. Thanks for any input in advance.

Dick
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Last edited by 335driver; Aug 31, 2014 at 07:34 PM.
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Old Aug 31, 2014, 07:52 PM
Do it Right, the first time!
CoolerByTheLake's Avatar
United States, MN, Hermantown
Joined Dec 2008
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Pretty much beyond my knowlrdge, BUT give invertmast a PM, he did this

150% enlarged WingontheWeb HO-229
http://www.rcgroups.com/forums/showt...ght=Horten+229

He may be able to help you out!!
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Old Aug 31, 2014, 08:13 PM
2014 EDF JET JAM We be Jamming
Kevin Cox's Avatar
St. Louis Intl, Missouri, United States
Joined Jan 1997
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The outer portion is the rudder/yaw control. It is the section of the wing that is bent/canted downward.

The aileron is the one next to it. The inboard portion is most likely the elevator.
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Old Aug 31, 2014, 10:37 PM
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United States, FL, North Port
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I agree with Kevin, the only thing in addition to that, is i would all of those surfaces into elevons (except the outer tip, which i would mix those surfaces into the elevator stick for extra pitch authority, but have the mix able to be turned off via a switch in case any undesireable tendencies emerge).
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Old Aug 31, 2014, 10:41 PM
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USA, TX, Round Rock
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invertmast, thank you for the quick reply. I will certainly keep all these things in mind.

Richard
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Old Sep 01, 2014, 01:34 AM
I don't like your altitude
Stupot46's Avatar
Joined Sep 2011
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Looking forward to this one!Are retracts on the agenda?Nose wheel should be fun.
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Old Sep 01, 2014, 04:07 PM
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Stu.........probably not, if they are it ain't gonna be scale, not that die-hard...I'm thinking about a quick foam investigatory study first.
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Old Sep 02, 2014, 05:29 PM
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upland CA
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Keep in mind that due to the angle on the tips you will want to do a split control surface up and down at the same time to act as drag rudders. if not you will get a roll with yaw .
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Old Sep 02, 2014, 06:44 PM
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turbonut, don't really know what you mean "a split control surface up and down at the same time to act as drag rudders" Do you mean coupled with aileron movement? Like adding rudder while turning as in a Cub?
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Old Sep 02, 2014, 08:20 PM
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Each wing tip should have the control split from root to tip along the cord so it can deploy in both directions up and down.
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Old Sep 04, 2014, 10:53 PM
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United States, CA, Lancaster
Joined Jan 2009
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My BV-208 used elevons on the outer panels. I did not use flight controls on the main wing. There needs to be about - 4 degrees washout for the outer panels. I also added verticals for yaw stability.
http://www.luft46.com/bv/bvp208.html
I am building a He P.1079B/II which is similar to your plane. I will be using the outboard surfaces as elevons and inboard surfaces as spoiler/elevators. To make the yaw control simple I will be using the He P.1079B/I vertical tail.
I found that the elevon/ spoiler arrangement by flying my P-1111 . The inboard surfaces are better used as trimmer for pitch control and can be used as spoilers for landing (plane has ground effect).

Hope this helps
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Old Sep 05, 2014, 11:21 PM
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I made a BV-P215 outta foam and used elevons on the inboard wing. I got a flight outta it but it was structural failure , I had no spars just a flat foam wing and it just fluttered and tore in half. But, it was in the air for a minute or so. This is something that I'd just like to do. Crazy I know but too many look-a-like foamies at the field.
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Old Sep 09, 2014, 04:18 AM
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Colchester UK
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With my Arado 555 I have 2 elevons on each side on the outer drooped wing. The inner surfaces
are inner flap up outer flap down for landing to slow it down. The plane does have rudders.

http://jgwright.co.uk

The Horten has a similar arrangement with outer elevons and up flaps and down flaps for landing.

The Heinkel 1079 design has proved a problem when flown as a model and requires a vertical tail surface.

None of these early German designs had split yaw control like Turbonut suggests. They were found on the Northrop flying wings.

John
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Old Sep 12, 2014, 06:56 PM
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Thank you John, I may have to rethink attempting this build. I like your Arado, good job
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