An undisclosed carrier aircraft (by the looks of it an Aero L-29 Delfín) took the thing to an altitude of 12,000 feet (3,657 meters), from where it was dropped and the rocket's engine sprung into ...

It will be 105 feet (32 meters) long with a 7.5-foot (2.3 m) diameter, making it larger than Rocket Lab's Electron vehicle (which is 59 feet, or 18 m, tall).