Armadillo aerospace experimented with 'throatless' engines, by which I
believe they meant a contraction ratio of 1. IRC thrust was only a percent
or two lower, but thermals may be well significantly worse.
On 26 July 2016 at 07:50, Jonas Bjarnø <sveskemos@xxxxxxxxx> wrote:
I agree, but there has to be a minimum contraction ratio whereunder the
shaping of the flowfield is affected. I was just curious as to whether
anyone here had experimented in that regime.
2016-07-25 1:43 GMT+02:00 Paul Breed <paul@xxxxxxxxxx>:
I think L* matters much more...
On Sun, Jul 24, 2016 at 1:39 PM, Jonas Bjarnø <sveskemos@xxxxxxxxx>
wrote:
Hi Guys,
A quick poll for those of you who have done pintles. Has any of you
worked pintle injectors in chambers with contraction ratios below 4, and if
so what are your experiences?
I've never been below 4 on either fuel or ox centered, so I'm curious as
to experienced effects on thermal loading and combustion efficiency.
Anyone?
BR's
Jonas