I read the RRC3 manual. Caveat, I don’t own one, but on page 21 of the manual,
it describes exactly what you need.
Allen
Terseness and mis-spelling courtesy of my iPhone
On May 13, 2018, at 10:26 AM, Terry McKiernan <terry@xxxxxxxxxxxxx> wrote:
All good points; I appreciate the discussion and advice. I can certainly see
how ROCstock needs to be more safety-conscious with all the spectators,
especially kids running around.
OK so, getting down to specifics: let's say I'll get an altimeter with some
smarts to do my airstart. How about the RRC3 (about $75)? Or do I need the
Raven ($155) or something even more capable? Just to repeat myself yet
again, the 2nd stage payload will also have an EggTimer TRS which will handle
the motor ejection charges. I just need something to handle the airstart.
Thanks!
Terry
On 5/13/2018 9:17 AM, David Erbas-White wrote:
On 5/13/2018 8:56 AM, Allen Farrington wrote:
I agree with David that this discussion is exactly what this chat is for!
The idea of doing a sim and setting the logic triggers is what most staged
rocket flyers do. It’s what I do as well.
The “if required” clause in the guidelines are there to allow for some
discretion based on the range situation. For example, at a ROC launch,
especially a ROCStock Saturday, we have lots of spectators and new LPR
flyers so I would stray to the more safe configuration. If it were Friday
morning when it’s primarily experienced flyers in a small crowd, I’d let
you fly the timers, put it on the back row, and call it a heads-up flight.
Additionally, while your rockets are previously flown, you are trying a new
ISC and if it fails during boost, you could light a tumbling sustainer.
That’s a bad situation at a ROC launch, but would be OK from the away cell
at black rock.
You've said it far better than I did. I was mentally thinking of our
'normal' Saturday morning, heavily attended with numerous spectators type of
launches in my response. I agree with all of the above...
David Erbas-White
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