Hey—a little late but come to think of it Veni’s Fatboy crash, if I’m not
mistaken, was also on a moon-burner. That rocket has flown dozens of times.
Never unstable — it came off the rail and just spun...
John
On Jun 17, 2015, at 4:24 PM, Kurt Gugisberg <kurtgug@xxxxxxxxx> wrote:
From the video, I could see that my Punisher also veered off after it left
the pad. I had to leave my casing with David because it had a heat bulge in
the end near the forward seal. So it was probably close to catoing too.
Looks like we have a cast of characters that might lead to to behavior we
saw: misaligned thrust vectoring, rail button placement, low level of
stability with high thrust motor. The only thing it might not be is rail
whip.
Kurt
On Wed, Jun 17, 2015 at 1:02 PM, R Dierking <applerocketry@xxxxxxxxxxx
<mailto:applerocketry@xxxxxxxxxxx>> wrote:
I’m sure we can come up with things to investigate and even reduce this
misalignment problem.
Who’s interested in a Punisher 2 mass launch? I think we should use the same
K1440 engine and leave it up to each flyer if they are going to modify the
rail buttons, pad, whatever else. We have lots of time to collect details on
each project.
Chris, would it be possible to post some details of the AC stand used to test
for misalignments?
Do you think that creating a way to hold the rocket on the pad until max
thrust is achieved would help?
I’m wondering why David Reese has not joined this discussion because wouldn’t
he be one of the best people to advise on something like this?
Again, I think building a large launch pad/test stand for ROC launches would
be cool and we probably wouldn’t need the contribution of many people to do
it. We could use the pad at Black Rock for XPRS or BALLS. Again, I’m
offering to buy the trailer for the project.
Richard Dierking
