[roc-chat] Re: Punisher Drag Race and Discussion of Thrust Misalignment

  • From: David Reese <dareese@xxxxxxxxx>
  • To: R Dierking <applerocketry@xxxxxxxxxxx>
  • Date: Wed, 17 Jun 2015 19:10:31 -0600

Hi guys,

I've been away on business travel with very limited internet access since
getting back from RS (ask Chris K to check the whiteboard in my bay if you
don't believe me ;-)), so apologies for not having kept up with the chat
discussion.

Unfortunately my laptop suddenly appears to not be able to find its filesystem
on boot, so a longer response about pad stability will have to wait until I'm
back home on my network with access to my backup drive. (I really hope my last
backup ran before I left, because I just pulled all my RS photos from the
camera right before leaving :-( ) I definitely have lots of thoughts on this
topic after many weird experiences with N10,000s and N5600s...

I'm willing to stock up for another K1440 race next RS but it'll be up to you
guys to organize everything but the motors, and I doubt we can ever wring that
price out of Jeroen again... But don't worry, I'm working on coming up with the
next idea to pitch to the Wildman team for something even cooler!

David


On Jun 17, 2015, at 2:02 PM, R Dierking <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

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