Chris, that’s what I think too. The low pressure area behind the rocket cases
it. It’s actually really cool looking. I love this picture!
On May 26, 2017, at 1:48 PM, Chris Attebery <chrisattebery1971@xxxxxxxxx>
wrote:
Eric, I think it's similar to the Krushnic Effect. Basically, there's lower
atmospheric pressure at surrounding the flame due to base drag. It causes the
motor to over expand. It probably only happens towards the end of the motor's
burn when the rocket has built up a head of steam. It'd be interesting to
mount a pressure sensor on the aft centering ring to see how much the
pressure drops.
On Fri, May 26, 2017 at 1:35 PM, Eric Renger <ericrenger@xxxxxxxxxxx
<mailto:ericrenger@xxxxxxxxxxx>> wrote:
Wow! Those are some awesome pictures!
The M sparky that did the crazy skywriting was one of most insane things I
have ever witnessed, and the pics show so much interesting detail. It’s
really cool how the smoke has separated from the sparks in so many of the
pics where the rocket has a radical angle of attack — looks like the smoke
traces the path that the rocket traveled and the sparks shoot out in the
direction of thrust. Usually those two should be the same direction!
I have some questions about the pics of two of my flights that are in Benno’s
flickr.
First, there’s this picture of my Warlock with a close-up of the aft end of
the rocket while it is under thrust.
<34795259156_f1ffe7d986_o.jpg>
It looks like the rocket is trailing a cone of flame coming from the entire
base of the rocket! What is happening there? Does some of the hot exhaust get
trapped in the turbulence at the base of that fat rocket? Whatever it is, it
looks cool…
Next, here are some shots of my “Pod Rocket" on the flight where it had a
recovery failure. The parachute was completely tangled and the shroud lines
were entangled with the shock cord. I’ve never had anything like this happen
before, and I’m wondering how it happened. Does it look like the parachute
got temporarily snagged on one of the pods? Could that do it?
<34671771592_e90d52a64f_o.jpeg>
<34795292906_c676cae706_o.jpeg>
<33991953404_1da4e24e41_o.jpeg>
Any feedback on these questions would be great.
And thanks to everyone who takes such awesome photos and shares them with us
all!
Eric
On May 26, 2017, at 8:01 AM, Chris Attebery <chrisattebery1971@xxxxxxxxx
<mailto:chrisattebery1971@xxxxxxxxx>> wrote:
There were some birds that looked like glossy ibis. They were reddish brown
with a long curved beak.
I think Jim is right though. The birds flying overhead looked like
cormorants.
On Fri, May 26, 2017 at 1:40 AM, Jimn469897 <dmarc-noreply@xxxxxxxxxxxxx
<mailto:dmarc-noreply@xxxxxxxxxxxxx>> wrote:
The ones I got a good look at were double brested cormorants. American ibis
are white.
Sent via the Samsung Galaxy Express 3, an AT&T 4G LTE smartphone
-------- Original message --------
From: Ashley Brown <08ashleybrown@xxxxxxxxx <mailto:08ashleybrown@xxxxxxxxx>>
Date: 5/25/17 11:12 PM (GMT-08:00)
To: tccrockets@xxxxxxxxxxxxx <mailto:tccrockets@xxxxxxxxxxxxx>
Subject: [tccrockets] Re: Dairy Aire photos
I believe they are Ibis'
~Ashley :)
On May 25, 2017, at 10:43 PM, Michael Keller <michael.keller@xxxxxxxxxxx
<mailto:michael.keller@xxxxxxxxxxx>> wrote:
Does anyone know what type of birds were flying over the field? I've only
seen geese fly in those formations but the birds out this weekend were
black.
Best regards
Michael Keller
On May 22, 2017, at 10:13 PM, Bill Riley <RocketRiley@xxxxxxxxxxx
<mailto:RocketRiley@xxxxxxxxxxx>> wrote:
Sorry, I missed Steve's earlier post. I hope you recover it Steve.
-Bill
Sent from my iPad
On May 22, 2017, at 10:07 PM, Bill Riley <RocketRiley@xxxxxxxxxxx
<mailto:RocketRiley@xxxxxxxxxxx>> wrote:
Great photos Benno and Eric. Thanks for sharing. Who flew the Mad
Hatter Dark Matter? Pretty interesting flight!
Sent from my iPad
On May 22, 2017, at 9:25 PM, Benno Kolland <scrocketfan@xxxxxxxxx
<mailto:scrocketfan@xxxxxxxxx>> wrote:
Hi All,
Just wanted to share a bunch of photos from Dairy Aire on Friday and
Sunday (plus a few of the night launch) taken by myself and Eric
Melville. Thanks all for a great launch!
https://www.flickr.com/photos/130867993@N02/albums/72157681308221302 ;
<https://www.flickr.com/photos/130867993@N02/albums/72157681308221302>
-Benno Kolland
