On 31 December 2015 at 00:02, Henry Spencer <hspencer@xxxxxxxxxxxxx> wrote:
Two consecutive safety tests of their N2O/acetylene mixed monoprop
[aieee!! aieee cubed!!] went KABOOM KABOOM a month or so ago, and that kind
of spoiled the enthusiasm for it; see <
http://spacenews.com/darpa-airborne-launcher-effort-falters>. Mitch's
comment on the monoprop last spring was "there are reasons why this is not
entirely insane", but apparently it was insane enough...
Henry