That would require extensive engine testing. The company's concept calls for its space plane to take off horizontally, using a mix of air and liquid hydrogen to power the ramjet engines. At high altitudes, the space plane would pitch up and use a liquid-fuel rocket to enter space. The system would use an upper stage, released from the space plane's nose, to carry satellites into space. For higher orbits, the space plane would carry two upper stages.
Space vehicle launches.
Space launch infrastructure. In an increasingly competitive world environment, the investment we make in these ideas today is essential to create the economic benefits and high-quality jobs our state will enjoy tomorrow.