Update!

We have fixed the issues we saw in the first flight and we got a second flight in. Posted below are pictures of our Frankenstein plane (prototype 1) and the video of the flight.




https://www.dropbox.com/s/k0n6aaj5fs...115_153501.mp4

We resolved all the longitudinal stability problems by resizing the tail control surfaces, removing the negative angle of attack on the tail, and improving the fuselage design. We tried the second wing and reballasted the plane to 5 lbs for the second flight. It was a much smaller wing than the first and in combination with the extra thrust we were getting from the lipo battery, our plane was really quick. If we test the wing again we will have to limit the htrust to replicate the thrust we would be getting with the calculated nimh batteries.

As you guys can see we had some major issues with lateral/roll stability. Every time the plane went for a turn, it would go out of control. We are currently analyzing lateral stability to try to resolve the issue. I do want to get a second flight with the bigger wing that we used the first time to see if the wing area is the issue in order to get a better control system. Either way its back to the flight text books/ articles.

I appreciate any feedback. Tell me what you guys think!

I have updated the original post to reflect teams progress.