Originally Posted by chester2240
Thats looks like an acecombat jet the X-02 wyvern? If so take alook at the my ADF-01 Falken in my blog.
I honestly don't know what kind of jet it is supposed to be, I took the model from the web because I liked the shape and did some simplifications to the structure. I assumed it to be some artists impression of what a 6th? generation russian fighter jet might look like in a fantasy world. Pak-FA or how they call it. It sure looks like the original designer was heavily inspired by X-02 wyvern though. Your ADF-01 looks incredible detailed especially for the small size. I hope you'll get it, or the larger one your building according to the last entry in the blog, into the air some day soon. Kind of curious how it will fly and where the CG will be since it has almost no wings and that fork-tail. I'm going to do a pusherprop profile version first so I can dial in throws, CG etc. and won't be to afraid to launch the more work intensive full body model.
Originally Posted by sloperjoe
the only thing I can think of that would cause the tail to drop is that you still havent quite got the CG nailed yet, I was pretty surprised at just how forward the CG can be. the model in the build thread has a CG right at the TE of the little canards. the only other thing that might give you fits is the V-tail, on this version http://www.youtube.com/watch?feature...&v=fvEOopBybmQ
I had to dial in the rates to even begin to fly it, it wound up liking more elevator than roll, and wound up using 40% on the roll, and 60% on the elev for rates, with them equal and on higher rates it was near impossible to fly
And... you where right. Asche auf mein Haupt. I thought the CG could not possibly be in front of the extended wing root and stopped there with the CG experimenting. After reading your post I attempted to shift it to the trailing edge of the canard and: problem solved. No dropping the tail in a stall anymore. I guess it will need some uptrim now to achieve a less steep glide path but I won't find out before HK delivers the electrics. Thanks again!
Originally Posted by indoor_fr
The scale speed is the clue of the problem.
Everything is explained here:
Hope this helps.
Thanks. That must be the final word on matter.
This Link should be in some sort of "read this" for RCGroups. Took me a while to understand everything. Unfortunately there is no Real Forward Swept Wing Fighter Plane whose numbers I could plug into those formulas but I can use model airplanes with known flight characteristics and scale them down according to your formulas. Thank you very much!