[AR] Re: Ozone layer was Re: Removing Coking Deposits
- From: Peter Fairbrother <zenadsl6186@xxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Tue, 20 Sep 2016 02:57:28 +0100
On 19/09/16 22:07, Keith Henson wrote:
On Sun, Sep 18, 2016 at 10:07 PM,Peter Fairbrother
<zenadsl6186@xxxxxxxxx>wrote:
arocket Digest Sun, 18 Sep 2016 Volume: 04 Issue: 225
snip
BTW it was ozone layer preservation day on Friday.
Wishing you all a belated
Happy International Day for the Preservation of the Ozone Layer!
This is about as far from the concerns of this group as you can get.
I have been scoping out power satellites as a renewable energy project
that could scale large enough to get humanity off fossil fuels.
That takes around a million flights per year. While the vehicles
don't generate a lot of ozone distorying NOx on the way up, they do
during reentry.
A bunch of people who work for NOAA in Boulder have been working on
this for better than a year. They expect to have a paper out by the
end of the year. I await the paper with great interest.
No-brainer solution - limit re-entry.
Use a tsto, first stage is highly reuseable and expensive, puts second
stage into a few 100 kms high and say 2 km/s horizontal. Have maybe 200
second-stage modules per first stage.
I like wings wheels and jets for the first stage, but if you prefer a
SpaceX/Blue Origin style vertical landing that's OK. WWJ gets you back
in the air much quicker though.
The first stage reenters at 2 km's, much less than an orbital reentry,
so little NOX is produced.
The second stages are tanks and an engine/guidance module. Keep the
tanks in orbit, for whatever - tankage, living space, raw material for
smelting - and reenter only the engine/guidance modules, in bunches.
But if you are still fixated on SSTO, then... I guess there's no hope
for you. Even with a Sabre engine, which is just about perfect for a WWJ
TSTO booster..
-- Peter Fairbrother
Other related posts:
