This is the Curtiss Cox Cactus Kitten. It was flown to 2nd place in the 1921 Pulitzer Trophy Race by Clarence Coombs. His top speed was 170.26 M.P.H. in the 5 lap 155.35 mile race at Omaha Nebraska.
I have endeavored to build as realistic a version of this for orbiter as I can. The speed and manuvering are close to the real thing near sea-level. I have used spacecraft2/dll (included in download) to take advantage of a few things including airfoil set-up and sound control.