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Originally posted by Zaphod58
reply to post by KilrathiLG
Yes. There was a rocket design that was tested on the very small scale, years ago, that had a curved bottom, and spun really fast. A laser was shot repeatedly at it, captured on that curve, and boosted it higher. The laser was shot very rapidly on and off. It hits the parabola, and causes the air to "explode", each explosion pushes the rocket forward. No more fuel, or rocket motors.