Possible, but the missile seems to have reached design trajectory and velocity
after the event. 500 km downrange and higher apogee than that (probably 1300
km max range fired mostly horizontally).
George William Herbert
Sent from my iPhone
On Aug 25, 2016, at 2:03 AM, Andrew Burns <burns.andrew@xxxxxxxxx> wrote:
I strongly doubt those sparks were from any type of pyro-actuated event, no
way any kind of explosive bolt/pyro cutter etc. would produce a shower of
burning fragments like that. Similarly if it were jet vanes letting go/being
cut off you might see a few glowing vanes go shooting off but nothing like
that. They also look way too large to be just sparks, I'd suspect burning
fragments of something and probably unplanned given the uneven distribution
like that.
As you say looks a lot like the shower of fragments during ignition in terms
of size, number and spread. Perhaps some propellant fragments breaking away
and being ejected? Or chunks of a graphite nozzle breaking away?
On Thu, Aug 25, 2016 at 8:02 PM, George Herbert <george.herbert@xxxxxxxxx>
wrote:
Thanks Bruno.
Another theory I came up with:
It has both grid fins and thrust vanes. They may jettison the vanes once
it's moving fast enough for the grid fins to be fully effective..,
George William Herbert
Sent from my iPhone
On Aug 25, 2016, at 12:38 AM, Bruno Berger <mailinglists@xxxxxx> wrote:
100% solid. Broken loose igniter seems a good possibility for the second
event. The first maybe comes from the the metallic cap (or remnants of
it) which closes the throat. Seen that from Russian SAM's
Bruno
Am 25.08.2016 um 08:40 schrieb George Herbert:
I am pretty dang sure it's a solid. The liquid SLBM tries all CATOed.
Igniter falling out might be it...
George William Herbert
Sent from my iPhone
On Aug 24, 2016, at 11:31 PM, "Troy Prideaux"
<troy@xxxxxxxxxxxxxxxxxxxxx <mailto:troy@xxxxxxxxxxxxxxxxxxxxx>> wrote:
Assuming we’re all in agreement that it’s a solid? Maybe part of the
ignition system breaking loose and being extruded?
Troy
*From:*arocket-bounce@xxxxxxxxxxxxx
<mailto:arocket-bounce@xxxxxxxxxxxxx>
[mailto:arocket-bounce@xxxxxxxxxxxxx] *On Behalf Of *George Herbert
*Sent:* Thursday, 25 August 2016 3:55 PM
*To:* Arocket List <arocket@xxxxxxxxxxxxx <mailto:arocket@xxxxxxxxxxxxx>>
*Cc:* george.herbert@xxxxxxxxx <mailto:george.herbert@xxxxxxxxx>
*Subject:* [AR] Sparks from a SLBM
Again crowdsourcing a missile question...
Video the North Koreans released from their SLBM test earlier today.
Most of the way up (in these shots) there's a pyro event of some
sort with many sparks, but the rocket keeps going.
https://www.youtube.com/watch?v=xRAznz8C-C4
Anyone have ideas what the sparks / event were?
Similar sparks at first stage ignition but I think the second one is
not a staging event.
Dave Schmerler at Monterey Middlebury Institute / Center for
Nonproliferation Studies pointed me at the vids wondering if
deployment of suspected grid fins was one of the spark showers. I
think neither, but putting it out there...
Thanks!
George William Herbert
Sent from my iPhone
