Justin S3D

I bought this a while ago. The 3D work is utterly stunning, the systems work is also excellent. Years ago I used to model the Hawk, going back to X-Plane 6. You cannot get any info out of BAe, so I reverse engineered it, with some help from books about the Hawk with some test flight data, and also a couple of T-45 pilots gave some useful comment on a T-45 variant I made. The flight model in the JustFlight Hawk seemed immediately wrong. If you flew inverted the aircraft needed a lot of forward stick to hold it up. Some is normally required, but it was excessive, and was also noticeable in aileron rolls. I was also bothered by how easily the wing and tail tips made vapour. Anyway, I opened the aircraft in Plane Maker and saw immediately that the wing was made of only one element. This would never work properly. Then I looked at the airfoil file, and it was completely absurd. We don't know what the real foils are, but they are something close to a NACA 64 series wing, and seem to have a cuffed leading edge. My reverse engineering created a wing of about 5 elements, with the crescent tips modeled too. I grabbed the wing geometry and foils from my old model, and also corrected most of the control surface deflections, and it flew like a Hawk. It also made vapour at the tips only under high G loadings. Take-off and landings could be made at the correct attitudes and speeds. Now I have the beautiful JustFlight Hawk with a much more accurate flight model, and I love it.