[AR] Re: Built another hovering rocket
- From: Lloyd Droppers <ldroppers@xxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Wed, 11 Feb 2015 09:07:42 -0800
Cool video Ben, always fun to see something fly. Having worked a fair bit
with peroxide I think that you are right and that if it was commercially
available it would probably be a good choice for AR experimentation. On top
of not being great performance it has its own quirks like material
compatibility, decomposing all of the time, and burning your skin, but I
suppose there is no such thing as a free lunch.
Nate - I don't have any information about the catalyst because I'm not from
Moon Express, but guessing is fun! I would bet they are using silver packs
as they were the old standard. Also no purple plume means they are not
using permanganate. Ben said 90-86% peroxide so that also says silver since
you don't need the fancy catalysts till >~95% H2O2. And the big white cloud
pulsing before the start of the test is pretty normal in development
catalyst beds, it is pretty much pushing a small amount of peroxide through
the system to heat up the catalyst and make it work without swamping.
But that is just guessing, and I would love some actual info from Ben as
well, if he is allowed to talk. And if not we can all get some inspiration
from the X-15
http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19650016124.pdf
Lloyd
On Wed, Feb 11, 2015 at 7:58 AM, Nate Vack <njvack@xxxxxxxxxxxxxxxx> wrote:
> On Tue, Feb 10, 2015 at 9:22 PM, Ben Brockert <wikkit@xxxxxxxxx> wrote:
> > I was the propulsion/structural lead on another hovering rocket, this
> > one for Moon Express:
>
> It's so little!
>
> Congratulations! The (lack of) plume looks great. Can you talk at all
> about the cat packs?
>
> -n
>
>
Other related posts: