By RazzaTazz 14 Comments
The Pentagon along with its research agency DARPA (which also helped to create the internet) have been working on an aircraft that can travel anywhere in the world in under an hour, so that they can have a rapidly deployable military intervention force. Yesterday was the second time in just over a year that a test aircraft disappeared/disintegrated. The general concept of these aircraft is that they reach near orbital heights and then descend back into the thicker atmosphere. The lack of atmosphere of course makes it a lot faster for the aircraft to move as friction is significantly reduced. The main problem is the reintroduction into the atmosphere, doing so increasing the heat of the craft to past the temperature levels at which steel melts at. Incidentally unlike what most people think the heat of re-entry does not come from friction but rather from compacting the atmosphere (I can't explain more as my knowledge of physics is somewhat lacking.) Still it is interesting to consider that a staple of comic book super hero teams is still struggling to become a reality in real life.