What is the liability exposure of the Spacecub?
This is an issue for the lawyers to wrangle over. The actual risk factor (to anyone but the pilot within the vehicle) is actually quite low. The total amount of fuel is 1200 gallons. The fuel we are considering is the low volatility Jet A, or JP-5 (military version of the same stuff) so even a complete, catastrophic failure of the fully fueled rocket on takeoff would be less disastrous than a similar failure in a corporate jet. Further, the terminal velocity of the falling rocket in the lower atmosphere is about 300 mph, and the rocket is quite lightweight at that point so a total failure here is limited in extent. Finally, the redundancy and engine out capability of the ship makes the occurrence of such a complete and total failure (or explosion) a very low likelihood event. In practical terms the rocket is little more hazardous, to bystanders, than aircraft of similar fuel capacity. Some have expressed concern about the presence of liquid oxygen, and the dangers it might add. This ef
