The Hybrid Rocket Program is currently under development. SpaceDev is analyzing the launch vehicle market and the technical aspects of the various launch vehicles and expects to make announcements concerning the program in 2000. Hybrid rockets are substantially cheaper, simpler, safer and easier to design, construct, transport and launch than the more conventional solid and liquid rockets currently used. Hybrid rockets utilize a hollow cylinder of solid fuel through which a liquid or gaseous oxidizer flows. This stands in sharp contrast to the toxic exhaust of most solid and liquid rockets currently flying.
Hybrid rockets utilize safe, non-toxic and storable fuels.
Hybrid rocket solid fuel bears a large chemical resemblance to tire rubber. It does not spontaneously ignite, or ignite easily, nor does it explode. The simplicity of the hybrid system allows for ease of construction, maintenance and use. Because of their simplicity and the safe nature of the fuel and oxidizer, hybrid rocket motors are inexpensive and relatively easy to mass produce and store, allowing for economies of scale in their construction.