Orbital Systems Corp. has an air-launched booster, Pegasus, in regular service (launched off a converted L-1011 airliner). I'm not sure Rutan or Scaled Composi

Orbital Systems Corp. has an air-launched booster, Pegasus, in regular service (launched off a converted L-1011 airliner). I'm not sure Rutan or Scaled Composites had much to do with it, though. (OSC is also the "other" commercial cargo provider for the space station, though they haven't started with demo flights yet; they're using their own booster for this, though the first-stage engines are refurbs from the old Soviet lunar program. Literally --- another American aerospace company bought thirty-odd engines that had been built for the Soviet N1 booster out of a warehouse in Kazakhstan...)