How X-tail planes work

[captain nemo12]

Hi all,

Been wondering this question for a long time now and finally I can ask, I know that the X-tail plane configuration has been used on various Dutch and American (Albacore) subs, but I never knew how they worked. From the info I got on the net, I know that this method offers a lot of agility to the submarine. So here are my questions]http://www.subcommittee.com/forum/icon_smile.gif[/img]

[bob the builder]

I believe that Skip sells

I believe that Skip sells an x-tail mixer. I'd imagine that you'll need two channels, just like any other submarine, as you need 'dive plane' and 'rudder' inputs. The unit takes the two signals, mixes them appropriately, and outputs to the servose.

If you look at the sub from the back, you'll see an "X". The upper left and lower right planes are on the same shaft, as are the upper right and lower left.

To surface, the 'left' and 'right' planes both pull inwards.

To dive, both push outwards.

To go left, both planes move to the left

To go right, both go right.

What this does is effectively DOUBLE your control surfaces, as your rudders can affect your diving, and your dive planes can affect your turning.

It's pretty cool, and something that I've been playing with for a future project.

I think that there are actually mechanical mixers available as well. Instructions to build them can be found on the 'net if you search for airlplanes "V-tail" mixers.

Hope this helps.

[captain nemo12]

Thanks Bob,

Although the diving moves

Thanks Bob,

Although the diving moves seems really cool, I was impressed to see that to move left and right the planes move in the same direction.

I believe in one case I saw a model Walrus with four servos each controlling a plane independently.




You can see the servos on the sides of the hull.

I HAVE to try this method someday!

[novagator]

Some remotes have X-tail mixers

Some remotes have X-tail mixers as well. My JR unit does.

[koeze]

Those are no good. You

[color=#000000]Those are no good. You have a depth or pitch controller that needs a depth input on your boat. Therefor the signal cannot be mixed in your transmitter.

Depth]

[witchblade]

For the exact functioning of

For the exact functioning of the x-rudder system look at this site]http://www.modelluboot.de.vu/[/url]

I hope you speak a bit german. Or at least you get the general idea.

Danny

[terry weber]

Hi all,

Been wondering this question

Hi all,

Been wondering this question for a long time now and finally I can ask, I know that the X-tail plane configuration has been used on various Dutch and American (Albacore) subs, but I never knew how they worked. From the info I got on the net, I know that this method offers a lot of agility to the submarine. So here are my questions]http://www.subcommittee.com/forum/icon_smile.gif[/img]

What are the draw-backs of the X-tail? I heard that they become unstable if your going fast? Is that true?
Terry