Hi

On my 98" Vulcan i use two inboard elevators and two outbord elevons, is this mixing really necesarry? i have a lot of elevator-controll ( mayby too much ).

I would like too fly the Vulcan with conventional Elevators and Ailerons, what can i expect in terms of manouvring?

Unless someone has tried that setup on the airplane, the answers are going to all be conjecture. I would think that separate ailerons and elevators would be fine, but who knows for sure.

The best way to test it is make the elevon mix on the outboard sections selectable with a switch - one way they are elevons and the other, only ailerons. Try it up high and see if it works OK...

Bob

By design, most delta wing platforms require every bit of the eleven moments to control and pitch stabilize the aircraft.
I've had the SAAB J35 Draken since 2007, and while the control mixes are complicated. They do justice for the arframe, both in performance and with scale-like functionality!
Like your jet, the Draken has both inboard dedicated primary elevators, and outboard elevons. Drop me a PM IF you like, we can chat more on the subject.
The Draken will be present at the SC-Tiger Meet this weekend. Will not be flown there due to the tail wheel door structure being too low, and likely damaged on grass.
Take care,
Franko

I have built a large number of flying wings. They all have elevons on the outer control surface. Some like the Boulton Paul P111 have 2 elevons each side as the original did. This plane has airbrakes though. It is a common misconception that flying wings cannot have flaps because of pitch changes.

I have found the best solution to slowing a flying wing down for landing is to have 3 flying surfaces each side. the outer is just a normal elevon. The inside pair can be used with the most inside set down like a flap used for landing only and the middle set used to correct pitch change moving up. This gives a crow braking effect. On my Horten I did not have airbrakes and the plane just floated on and on in ground effect until I used the surfaces like this. The wing will fly well on just ailerons but it can be another matter to land them! You also have the choice of flying normal flight with the 2 outer surfaces as elevons until landing phase.

On a delta like the Vulcan you can have the choice of fitting airbrakes like the original or just rely on getting the nose up on landing to enter high drag on landing.

On some of my deltas I have the control surfaces switched so they can be used in different ways during the flight from the landing.

On some flying wings I have elevons on the outer controls and just flaps on the inner. The outer elevons raise when the flaps are deployed and the plane lands so slowly you can almost catch it especially if there is any breeze blowing. I had split flaps on my 2 DH 108 Swallow jets.

https://www.youtube.com/watch?v=cwoOi3N3LYU

The original Vulcan had the control surfaces set as you have. If you find it too much control in elevator then you could just use it for take off and use low rate elevons only for both elevons. There is no right or wrong way to all this it is what works best for you. If it was mine I would certainly try the inner as elevator for takeoff, elevons for general flying and flaps for for landing, mixing in rpm elevons on the outer. You would have the best of all worlds plus redundancy if you lost a servo.

Please post what you find best for you after you have tried different things.

John