Originally posted by DanS
That's JP Aerospace. The plan is to have a very large hydrogen-filled airship launched from way up (no hazard at those elevations). It would use an ion thruster to build up orbital velocity over the span of several days.
It is an interesting concept, but from what I have heard, the physics don't make sense. The company keeps saying that it does make sense, but can't discuss it for competitive reasons...
There are other reasons why I am not following that effort, such as the company doesn't have the financial side sorted.
That's JP Aerospace. The plan is to have a very large hydrogen-filled airship launched from way up (no hazard at those elevations). It would use an ion thruster to build up orbital velocity over the span of several days.
It is an interesting concept, but from what I have heard, the physics don't make sense. The company keeps saying that it does make sense, but can't discuss it for competitive reasons...
There are other reasons why I am not following that effort, such as the company doesn't have the financial side sorted.
As I understand, an orbital craft has to do a 're-entry' where the craft turns into a fireball from air friction when travelling through the ionosphere. Would it not follow that a craft going up also be subject to the same effect?
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