If you're talking about the other project orion, it was an idea in the early '60s that used the force from multiple nulcear blasts in succession to propell an interplanitary spaceship. It went as far as a sub-scale flight using conventional explosives. While proven technically feasable, it was in practicallity, illogical. <div class="Discussion_UserSignature"> <p> </p><p><em>So, again we are defeated. This victory belongs to the farmers, not us.</em></p><p><strong>-Kambei Shimada from the movie Seven Samurai</strong></p> </div>