[AR] Re: DARPA responsive launch challenge
- From: Norman Yarvin <yarvin@xxxxxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Mon, 23 Apr 2018 22:48:19 -0400
On Sun, Apr 22, 2018 at 11:32:00PM -0400, Henry Spencer wrote:
There was a brief surge of interest in this and other "free radical"
propellants at one point in the 50s, and that may be where Heinlein got
the idea.
As Clark put it in summary of that effort,
"The only people who have had any luck at trapping free
radicals are the FBI."
Well, unless you count LOX; it's not commonly appreciated, but
ordinary oxygen is a free radical, albeit an unusually stable one:
https://en.wikipedia.org/wiki/Triplet_oxygen
Other related posts: