[AR] Re: OT laser propulsion and power satellites
- From: "John Stoffel" <john@xxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Mon, 21 Oct 2013 17:02:58 -0400
Keith> It would take an awful big sea dragon to lift 15,000 tons.
If skylon doesn't have to lift it all in one go, why does Sea Dragon?
Keith> The air breathing phase of a Skylon flight has more than twice
Keith> the effective propulsion efficiency than the part on rocket,
Keith> it's even better than the laser heated hydrogen phase.
Note, it is *estimated* to have twice to efficiency. It hasn't flown
yet or demonstrated anything close to working hardware. View graph
dreams so far. Any laser propulsion is also dreaming from what I
read.
Keith> The propulsion laser in GEO shines more or less at right angles
Keith> to the direction of flight. Takes close to 4000 km to reach
Keith> orbit. See the picture of a Skylon under laser propulsion.
Laser sounds neat, but I always wonder what happens when it loses lock
and illuminates something else by accident...
Other related posts:
