This company, depending on Northrop, is the head of the ship's designs and is occupied by the engine and its tank.

-There were only three crew members in this first design.

“Space Ship One”

-The oxidizer tank is almost spherical, the combustion chamber is cylindrical and long.

-It is that long as it is desirable that the engine lasts in order to achieve the desired apogee.

-At the same time, it has made the surprising Space Ship One and Two, as well as the carrier planes.

-It seems that they are working on Three. These projects are commissioned by Sir Richard Branson's Virgin.

“Space Ship One, engine schematic”

-The rocket motor that propels this vehicle that penetrates into upper space (around 100 km) is of the hybrid type. This is a combination of liquid and solid fuel.

“Hybrid engine concept” (PiP)

-HTPB solid fuel is in the long cylindrical part of the engine, the combustion chamber.

-The oxidizer N2O (Nitrous Oxide) is injected, which does not combine hypergolically, so it requires an ignition or ignition system.

-In a “quasi-transparency” we see that most of the ship is occupied by the engine and its tank. There were only three crew members in this first design.