Is it related to the Bristol Orbital Express project? If so, there’s an AIAA
report available:
http://www.amazon.com/Orbital-Express-Project-Aerospace-MicroSat/dp/1563471922
There’s also some analysis in this paper:
A Comparative Investigation of a Ground and Air Launch of LEO-Bound
Microsatellites
https://curve.carleton.ca/system/files/etd/7f9b853d-dac0-437d-b238-0594a9d2b865/etd_pdf/fc8b8c0250d37796fc482ba58dc437a7/labib-acomparativeinvestigationofagroundandairlaunch.pdf
From: Chuck Black
Sent: Wednesday, April 20, 2016 10:17 AM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Re: arocket Digest V4 #93
Hello,
I've recently accessed (through the open.canada.ca website) a 2009 document
called, "Microsatellite Launch System Technical Feasibility Study Project Final
Report," which discussed the creation of an all Canadian, indigenous micro-sat
launcher capable of putting 150kg into an 800kg sun synchronous orbit.
The document was created as part of a Canadian Space Agency contract and I'll
likely be writing about it over the next few days.
Several of the original authors are currently part of this newsgroup and I was
wondering if anyone could connect with me offline and offer some advice on the
document and its conclusions.
Thanks in advance.
Chuck Black/ 416-569-7697
The Commercial Space Blog
On Wed, Apr 20, 2016 at 1:08 AM, FreeLists Mailing List Manager
<ecartis@xxxxxxxxxxxxx> wrote:
arocket Digest Tue, 19 Apr 2016 Volume: 04 Issue: 093
In This Issue:
[AR] Diamond tooling
[AR] Re: Diamond tooling
[AR] Re: Diamond tooling
[AR] Re: Diamond tooling
[AR] Re: Diamond tooling
[AR] Re: Diamond tooling
[AR] Portland State Aerospace Society
----------------------------------------------------------------------
Date: Tue, 19 Apr 2016 15:05:12 -0400
Subject: [AR] Diamond tooling
From: William Claybaugh <wclaybaugh2@xxxxxxxxx>
I'm looking for diamond drills, counter sinks, and spot facers for carbon
fiber composite; anyone have any recommendations for a high quality
supplier?
Bill
------------------------------
Date: Tue, 19 Apr 2016 16:22:01 -0400 (EDT)
From: r.hagensick@xxxxxxxxx
Subject: [AR] Re: Diamond tooling
McMaster has a lot of diamond coated tooling for use with cutting carbon
fiber. I use their diamond coated end mills for carbon fiber cutting. They
don't come better as a distributor than McMaster.
Richard Hagensick
----- Original Message -----
From: William Claybaugh <wclaybaugh2@xxxxxxxxx>
To: arocket@xxxxxxxxxxxxx
Sent: Tue, 19 Apr 2016 15:05:12 -0400 (EDT)
Subject: [AR] Diamond tooling
I'm looking for diamond drills, counter sinks, and spot facers for carbon
fiber composite; anyone have any recommendations for a high quality supplier?
Bill
------------------------------
From: justin corwin <outlawpoet@xxxxxxxxx>
Date: Tue, 19 Apr 2016 13:30:29 -0700
Subject: [AR] Re: Diamond tooling
It's hard to find counter sinks and reverse counterbores, particularly in
diamond. You may have luck looking at companies focused on glass or
ceramics, where it's used a bit more, like: http://www.crlaurence.com/ or
http://www.glassparts.ie/
On Tue, Apr 19, 2016 at 1:22 PM, <r.hagensick@xxxxxxxxx> wrote:
> McMaster has a lot of diamond coated tooling for use with cutting carbon
> fiber. I use their diamond coated end mills for carbon fiber cutting.
> They don't come better as a distributor than McMaster.
>
> Richard Hagensick
>
> ----- Original Message -----
> From: William Claybaugh <wclaybaugh2@xxxxxxxxx>
> To: arocket@xxxxxxxxxxxxx
> Sent: Tue, 19 Apr 2016 15:05:12 -0400 (EDT)
> Subject: [AR] Diamond tooling
>
> I'm looking for diamond drills, counter sinks, and spot facers for carbon
> fiber composite; anyone have any recommendations for a high quality
> supplier?
>
> Bill
>
>
>
--
Justin Corwin
outlawpoet@xxxxxxxxx
http://programmaticconquest.tumblr.com
http://outlawpoet.tumblr.com
------------------------------
From: "Troy Prideaux" <GEORDI@xxxxxxxxxxxxxxxx>
Subject: [AR] Re: Diamond tooling
Date: Wed, 20 Apr 2016 08:15:45 +1000
You need diamond drills for carbon fibre composite? That surprises me.
I’ve cut hundreds of FGC and CFC parts in the past (including very densely
packed CF/FG phenolic composites) with normal tools (mostly carbide though)
without issue although that’s usually with slower speeds and coolant though.
I’ve personally found that FG is more abrasive than CF on tooling.
Troy
From: arocket-bounce@xxxxxxxxxxxxx [mailto:arocket-bounce@xxxxxxxxxxxxx] On ;
Behalf Of William Claybaugh
Sent: Wednesday, 20 April 2016 5:05 AM
To: arocket@xxxxxxxxxxxxx
Subject: [AR] Diamond tooling
I'm looking for diamond drills, counter sinks, and spot facers for carbon
fiber composite; anyone have any recommendations for a high quality supplier?
Bill
------------------------------
Date: Tue, 19 Apr 2016 18:31:53 -0400
Subject: [AR] Re: Diamond tooling
From: William Claybaugh <wclaybaugh2@xxxxxxxxx>
Troy:
Diamond is required if you want to avoid pulling the fibers; not to mention
that carbide tool life is very short.
This may not be an issue if one is working at Safety Factors of six or
better, but if one is at 2.0--implying a wall thickness of 0.040" for a
1000 psia system at 6" O.D.--then diamond is a requirement. Using carbide
will cause failure at the drill holes.
Bill
On Tuesday, April 19, 2016, Troy Prideaux <GEORDI@xxxxxxxxxxxxxxxx> wrote:
> You need diamond drills for carbon fibre composite? That surprises me.
>
>
>
> I’ve cut hundreds of FGC and CFC parts in the past (including very densely
> packed CF/FG phenolic composites) with normal tools (mostly carbide though)
> without issue although that’s usually with slower speeds and coolant
> though. I’ve personally found that FG is more abrasive than CF on tooling.
>
>
>
> Troy
>
>
>
> *From:* arocket-bounce@xxxxxxxxxxxxx
> <javascript:_e(%7B%7D,'cvml','arocket-bounce@xxxxxxxxxxxxx');> [mailto:
> arocket-bounce@xxxxxxxxxxxxx
> <javascript:_e(%7B%7D,'cvml','arocket-bounce@xxxxxxxxxxxxx');>] *On
> Behalf Of *William Claybaugh
> *Sent:* Wednesday, 20 April 2016 5:05 AM
> *To:* arocket@xxxxxxxxxxxxx
> <javascript:_e(%7B%7D,'cvml','arocket@xxxxxxxxxxxxx');>
> *Subject:* [AR] Diamond tooling
>
>
>
> I'm looking for diamond drills, counter sinks, and spot facers for carbon
> fiber composite; anyone have any recommendations for a high quality
> supplier?
>
>
>
> Bill
>
------------------------------
Date: Tue, 19 Apr 2016 18:33:56 -0400
Subject: [AR] Re: Diamond tooling
From: William Claybaugh <wclaybaugh2@xxxxxxxxx>
Agree about McMaster as a supplier; I too use their drills...but they don't
offer countersink or spot facing tools. Thus my question.
Bill
On Tuesday, April 19, 2016, <r.hagensick@xxxxxxxxx> wrote:
> McMaster has a lot of diamond coated tooling for use with cutting carbon
> fiber. I use their diamond coated end mills for carbon fiber cutting.
> They don't come better as a distributor than McMaster.
>
> Richard Hagensick
>
> ----- Original Message -----
> From: William Claybaugh <wclaybaugh2@xxxxxxxxx
> <javascript:_e(%7B%7D,'cvml','wclaybaugh2@xxxxxxxxx');>>
> To: arocket@xxxxxxxxxxxxx
> <javascript:_e(%7B%7D,'cvml','arocket@xxxxxxxxxxxxx');>
> Sent: Tue, 19 Apr 2016 15:05:12 -0400 (EDT)
> Subject: [AR] Diamond tooling
>
> I'm looking for diamond drills, counter sinks, and spot facers for carbon
> fiber composite; anyone have any recommendations for a high quality
> supplier?
>
> Bill
>
>
>
------------------------------
From: Kyle Meeuwsen <meeuwsen.engr@xxxxxxxxx>
Date: Tue, 19 Apr 2016 18:15:16 -0700
Subject: [AR] Portland State Aerospace Society
Hello All,
This is my first post and I hope I am doing it correctly...
I am with the Portland State Aerospace Society and we are developing our
first liquid engine test stand. This is a LOX and Ethanol system
pressurized by either Nitrogen or Helium depending on the quote back from
Praxair.
Below is a link to the Test Stand PID on Imgur. I am looking for either
approval or to discuss design concerns. Please note that the valve below
the LOX tank is cryo rated with a pneumatic actuator that is pressurized by
two solenoids which are fed from the LOX pressurant line.
The senior design team before me also selected relief valves and solenoids
for venting on the top of the LOX tank that are not cryo rated. I have
concerns that heat transfer from the tank to the LOX might freeze these
components that are attached to the top of the LOX tank. I could attempt a
very shaky heat transfer analysis unless people know right away that these
components will freeze very quickly.
I am also still searching for filters and burst discs, and a way to safely
fill the LOX and Ethanol tank from a great distance away.
Also, any suggestions on how to purge the system of moisture prior to
testing would be greatly appreciated. I have been told to run hot
pressurant gas through the system for an extending period of time but I am
currently not in possession of a heat exchanger or an ample amount of
pressurant gas.
https://imgur.com/gallery/wVbtgUz
------------------------------
End of arocket Digest V4 #93
****************************
