SpaceDev of Poway, Calif., has been chosen to supply the major operating components for the hybrid rocket motor that will power Scaled Composites' SpaceShipOne manned spacecraft, SpaceDev announced Sept. 19. The hybrid motor will use tire rubber and nitrous oxide (laughing gas) as propellants. Both substances are inexpensive, can be transported and stored without special precautions, and will not explode when combined, according to SpaceDev. Environmental Aeroscience Corp., which ...


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