The plans were from the RC Modeler magazine from 10 years ago. I also have plans for a front canard plane also launched with one engine, I think it was called the sky blaster. Currently flying, today as a matter of fact, is a kit built plane called the stratoblaster from estes. Again 10 years old and it put into the air with a "E" sized engine, when I run out of rocket engines I put a little weight in the nose and a cox .049 with a pusher prop in the tail. Estes still offers the plane as an ARF only called the "Centurion" now a days.