[roc-chat] Re: Osiris 3.9XL - Virtues of an Altacc...
- From: "Ron McGough" <rrmagoo@xxxxxxxxxxxxx>
- To: <roc-chat@xxxxxxxxxxxxx>
- Date: Sat, 15 Oct 2011 22:28:34 -0700
That being said... we are only but a few of the proud and the brave that have
lived through the AltAcc experiance. LOL!
Ron McGough
----- Original Message -----
From: Jeff Gortatowsky
To: roc-chat@xxxxxxxxxxxxx
Sent: Saturday, October 15, 2011 9:29 PM
Subject: [roc-chat] Re: Osiris 3.9XL - Virtues of an Altacc...
I'll have to look to see what adapter I have. It's on a 5 year old Dell
laptop in the shop. Actually Ron I got a line on another! :D
I stopped using it when Wayne got me into hybrids ;) I guess people said it
was not optimal for the thrust profile. Or something like that...
Other than not reading out the altitude from the LED, the Altacc, being a
recording altimeter, was actually WAY ahead of its time. Or at least lead the
way. I used to correspond with Konrad Hambrick who did the coding down in San
Diego. You could work the data and find out the CD of your rocket. THAT is what
is missing IMO about the Altimeter Two. It's REALLY handy to know the real CD
of a rocket.
Anyway mounting the Altacc is sooo freakin simple. Arming it is simple.
Everything about it is simple. (Cept reading the altitude!) And though I've
only had about 25 out of a 100 HPR flights using an Altimeter for deployment,
the little Altacc has never failed. And I like that I can test it easily.
---------------------------------------
Jeff Gortatowsky, Redondo Beach, CA | Twitter: JeffGortatowsky | Yahoo:
indanapt
"(Scientific) Skepticism is not a set of beliefs, it is a set of methods for
asking questions about reality." -- Doctor Steven Novella
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From: Ron McGough <rrmagoo@xxxxxxxxxxxxx>
To: roc-chat@xxxxxxxxxxxxx
Sent: Saturday, October 15, 2011 7:30 PM
Subject: [roc-chat] Re: Osiris 3.9XL
Cheap, yah good luck! Them thar things are collectors items. yuk, yuk!
So which adapter are you using? I did some testing for Scott Bartell way back
when (I did it on my own) and he was very gracious for me putting the info out
from my tests.
Ron McGough
----- Original Message -----
From: Jeff Gortatowsky
To: roc-chat@xxxxxxxxxxxxx
Sent: Saturday, October 15, 2011 6:42 PM
Subject: [roc-chat] Re: Osiris 3.9XL
Yep! It's the very same. It's an AltAcc 2. One of the originals. I've
tested it with 12v lamps and it's working fine. Then I got a Serial to USB
adapter on my Laptop and made sure I could run the old proread and produce to
get the data out...
I'd love to buy a backup on the cheap. :)
(Cheap = under 50 bucks) :)
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Jeff Gortatowsky, Redondo Beach, CA | Twitter: JeffGortatowsky | Yahoo:
indanapt
"(Scientific) Skepticism is not a set of beliefs, it is a set of methods
for asking questions about reality." -- Doctor Steven Novella
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From: Ron McGough <rrmagoo@xxxxxxxxxxxxx>
To: roc-chat@xxxxxxxxxxxxx
Sent: Saturday, October 15, 2011 5:19 PM
Subject: [roc-chat] Re: Osiris 3.9XL
Hey Jeff,
That hole pattern in the Ebay sure looks like the same hole pattern as an
AltAcc manufactured by the late Black Sky Rocketry Company ;^)
Ron McGough
PS Does anyone remember Delta V Rocket motors or perhaps even want too? To
do so is definitely dating ones self lol
----- Original Message -----
From: Jeff Gortatowsky
To: roc
Sent: Saturday, October 15, 2011 4:26 PM
Subject: [roc-chat] Osiris 3.9XL
I am sure a few of you remember last weeks flight of the upscaled The
Launch Pad Osiris on an H97-S. 'S' standing for 'Still too long'. :)
To be honest the rocket has flown many times with a recording altimeter.
Over that time I've dialed in the CD on ROCKSIM based on those flights. It was
getting to the point where flights were within 10% to 15% of ROCKSIMs
predictions. So it should have had PLENTY of margin for apogee deployment... I
am not sure what went south. My guess looking at the rail guides is those
guides should have been replaced a long time ago and it expended too much
energy off the pad. It's speculation but the flight was way low for a 5 pound
rocket.
Anyway... since the PML tubing was glassed when I built it, I was able to
go from picture 1 to picture 2 one week later... - Now slightly longer and
sporting an Altimeter bay for an Altacc or MissileWorks RRC
---------------------------------------
Jeff Gortatowsky, Redondo Beach, CA | Twitter: JeffGortatowsky | Yahoo:
indanapt
Facebook: http://www.facebook.com/jeffgortatowsky
Blog @ http://skepticalastronomer.wordpress.com
"(Scientific) Skepticism is not a set of beliefs, it is a set of methods
for asking questions about reality." -- Doctor Steven Novella
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