[AR] Re: Igniter Popping Sound
- From: Robert Watzlavick <rocket@xxxxxxxxxxxxxx>
- To: "arocket@xxxxxxxxxxxxx" <arocket@xxxxxxxxxxxxx>
- Date: Mon, 22 Sep 2014 11:05:32 -0500
They impinge- in this sketch:
http://watzlavick.com/robert/rocket/igniters/drawings/igniter6-nodims.pdf
The two ports shown in the upper left are 90 deg apart and are the GOX and fuel
ports. They are lined up at the same point longitudinally. The 3rd port located
a bit downstream is for the pressure tap. The spark plug threads into the end.
I was worried about the spark plug being upstream and not igniting the mixture
but it seems to be reliable. Except for the V5 igniter which didn't start as
previously mentioned, probably because the orifices were pointed downstream.
-Bob
> On Sep 22, 2014, at 10:14, "Graham Sortino" <dmarc-noreply@xxxxxxxxxxxxx>
> (Redacted sender "gnsortino@xxxxxxxxx" for DMARC) wrote:
>
> no worries.. Actually, I appreciate the second opinion on my math. Thanks too
> for the additional details.
>
> If you don’t mind me asking... to confirm regarding Norman's observation are
> your fuel/ox jets deliberately not impinging directly upon each other in the
> chamber? If so is the GOX line slightly further upstream of the fuel (or vice
> versa)? I think I had missed that point when I originally read the
> description of your design.
>
>
>
> On Sunday, September 21, 2014 10:49 PM, Robert Watzlavick
> <rocket@xxxxxxxxxxxxxx> wrote:
>
>
> Oops - I made a mistake. I thought your last run was 0.01 lbm/s but it is
> 0.01 kg/s (0.022 lbm/s) which is right in the ballpark. So forget the last
> paragraph.
>
> -Bob
>
>
>
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