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Rc airplane assistance. Answered

Ok so I am constructing a scratch airplane as some of you may have read on m other questions. I have reached another dilemma, whether or not a moving rudder is completely crucial. I'm thinking i could get away with just having a stabalizer fin in place of the rudder.
 Any help from you pros?

Thanks, Bud

3 Replies

AndyGadgetBest Answer (author)2012-09-19

Are you planning to have ailerons and elevator?  If so, you can get away without a moving rudder but it will be slow to respond as you'll be rotating it with the ailerons and banking with the elevator - The 'bank and yank' method - As opposed to yawing with the rudder and banking into the turn.  You'll still need a tailfin to maintain directional stability.

An alternative is the RET plane - Rudder, Elevator, Throttle.  RET is best used on a plane with a smallish wingspan compared to the length as it reacts more quickly.  I've made and flown a couple of Nutballs which are RET.  Easier to make and fly than more traditional shaped planes, very manouvrable and lots of fun.  Build plans are HERE.

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Re-design (author)2012-09-18

I fly R/C and very seldom use the rudder. I don't fly pattern aerobatics but if I did I would use the rudder much more often though. Lots of planes are built and fly just fine without a working rudder but they have to have working ailerons and elevator..

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rickharris (author)2012-09-18

If your going to use ailerons and elevator you may get away with just a vertical stabiliser.

Banking the aircraft and then pulling it round with the elevator.

It is more common to use elevator and rudder and no ailerons though.

Do you have a reason for this idea.

elevons are another alternative.


may be useful

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