Infinite speed helical engine for space travel 😗😁
Copyright © 2019 by David M. Burns. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.
Helical Engine
Posted in space travel
Posted in space travel
Infinite speed helical engine for space travel 😗😁
Copyright © 2019 by David M. Burns. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.