Go to http://TheGreatCoursesPlus.com/Backyard for your free trial today! Ive always wanted to attach rocket engines to a styrofoam plane, so I went to the hobby shop and bought all kinds of rocket engines! They come in sizes A, B, C, D, and E. Each step up is 2x as powerfull as the last. I also made my own F class sugar rockets based on Grant Thompsons design, but I must have done something wrong because they kept exploding :( Music: Halcyon Days- Mokhov