Navigaiter2002 | 1 Jun 02:26 2004
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Armadillo, flight video

http://www.armadilloaerospace.com/n.x/Armadillo/Home/News?news_id=260
  Nice job! In a few weeks, the Armadillo flight test vehicle went from 4 
motors with differential thrust steering to one large motor with exhaust vane 
steering! And they flew some hops to prove it works. That's progress.
  John C. told us at Space Access '04 that  it doesn't look like Armadillo 
will be ready for a shot at the X-Prize before it terminates, but with the rapid 
development they've shown, I've started hoping ...
  cheers from Allen Meece in S. Florida

members.aol.com/beanstalkr/project/
Sean R. Lynch | 1 Jun 17:52 2004

[Fwd: [AR] ORG member tests regen-cooled N2O+methanol motor]

Rare mention of liquids on aRocket :)
From: Marcus Leech <mleech <at> nortelnetworks.com>
Subject: [AR] ORG member tests regen-cooled N2O+methanol motor
Date: 2004-05-27 14:49:07 GMT
Fellow Ottawa Rocketry Group (And Space Modellers) member Glen Hillier 
tested a new version of his
  regen-cooled N2O+methanol motor this past weekend.  I'm not certain 
that he still has access to this list,
  so I thought I'd give a quick overview based o my conversations with 
him (and being present
  during the many hours of machining time required to build the motor).

The motor is a 150mm monotube design with a "split tank" using a teflon 
piston to separate the methanol and N2O, with
  the methanol riding on top of the N2O.  The design thrust of this 
motor was about 400lb, but it only achieved about half
  of that--he's already half-way built a new injector setup that should 
fix the combustion efficiency problems.

The cool (pun, I know) thing about this motor design is that it's 
regeneratively cooled, and the chamber is made entirely
  out of *aluminum*, with a machined graphite nozzle.  An earlier 
scaled-down prototype failed near the end of the
  burn--the chamber collapsed, but after some analysis, it became clear 
(Continue reading)

Michael Wallis | 1 Jun 22:19 2004

Re: Aerospike and other software

On Sat, May 29, 2004 at 05:40:01PM -0400, ShadowMem <at> aol.com wrote:

> I propose that ERPS gets some of these codes, especially the
> Aerospike, nozzle analysis, aerodrag, cp analysis, and possibly
> hypersonic CFD.
> 
> http://www.aerorocket.com/products/products.html
> 
> Dan
> _______________________________________________
> ERPS-list mailing list
> ERPS-list <at> lists.erps.org
> http://lists.erps.org/mailman/listinfo/erps-list
> 

Yup. Several of them look very interesting. I'd like to consider
getting an "E.R.P.S." copy of:

VisualCFD 2.8	($180.00 US)	Finite Volume CFD Analysis Program
AeroSpike 2.1	($ 50.00 US)	Minimum Length Nozzle Design & AeroSpike Nozzle Design Program
Nozzle 3.5	($ 30.00 US)	Converging-Diverging Nozzle Analysis
AeroDRAG 5.1	($ 20.00 US)	Aerodynamic Drag Prediction and Flight Performance Analysis
AeroCP 3.0	($ 10.00 US)	Center of Pressure (XCp) Analysis
HyperCFD	($150.00 US)	Supersonic CFD Analysis Program
FinSim 2.3	($ 30.00 US)	Fin Structural Analysis Program
		============
		 $470.00	Total

Budget for software being what it is (ie. non-existant), the question 
is what do we want first?? I'll buy and donate one item from the list. 
(Continue reading)

Michael Wallis | 1 Jun 22:24 2004

Re: Next Meeting ... #284

On Mon, May 31, 2004 at 12:00:01PM -0700, Michael Wallis wrote:
> The next meeting of the Experimental Rocket Propulsion Society will be
> held this THURSDAY evening at the Bowers Denny's starting at 8:00pm.
> 
> Items for meeting #283 (03 Jun 2004):

The meeting numbering code is off by one - This will be meeting #284.

    Michael

----------------------------------------------------------------------
Michael Wallis   KF6SPF       (408) 396-9037        mwallis <at> wallis.com

"And I keep praying that this faith we hold in common keeps showing up
 in the good things we do, and that people recognize Christ in all of
 it."           Philemon 1:6
David Masten | 1 Jun 22:38 2004

Re: Aerospike and other software

On Tue, 2004-06-01 at 13:19, Michael Wallis wrote:
> > I propose that ERPS gets some of these codes, especially the
> > Aerospike, nozzle analysis, aerodrag, cp analysis, and possibly
> > hypersonic CFD.
> > 
> > http://www.aerorocket.com/products/products.html
> > 
> Yup. Several of them look very interesting. I'd like to consider
> getting an "E.R.P.S." copy of:
> 
> VisualCFD 2.8	($180.00 US)	Finite Volume CFD Analysis Program
> AeroSpike 2.1	($ 50.00 US)	Minimum Length Nozzle Design & AeroSpike Nozzle Design Program
> Nozzle 3.5	($ 30.00 US)	Converging-Diverging Nozzle Analysis
> AeroDRAG 5.1	($ 20.00 US)	Aerodynamic Drag Prediction and Flight Performance Analysis
> AeroCP 3.0	($ 10.00 US)	Center of Pressure (XCp) Analysis
> HyperCFD	($150.00 US)	Supersonic CFD Analysis Program
> FinSim 2.3	($ 30.00 US)	Fin Structural Analysis Program
> 		============
> 		 $470.00	Total
> 
> Budget for software being what it is (ie. non-existant), the question 
> is what do we want first?? I'll buy and donate one item from the list. 
> What would be most useful generally??

I have copies of VisualCFD and HyperCFD. Both are seriously lacking in
many ways. (I'll donate them if you all want to play with them and I can
find them.)

They are both severely limited in the shapes they can deal with. It is
OK for a KISS vehicle, but insufficient for a POGO or ReSOAR type
(Continue reading)

George William Herbert | 1 Jun 23:30 2004

Re: inertial systems


>I just got a quote from KVH yesterday for their new 6DOF FOG IMU system -- 
>$25,000 and 10-12 weeks delivery. 

Model number check.  The TG-6000?

-george william herbert
gherbert <at> retro.com
Justin S. McFarland | 2 Jun 00:43 2004
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AeroAstro GPS-IMU

John, 

What sort of duty cycle and frequency do you require for your baseline
operations?  Some universities have developed some equipment that you may be
able to contract out for even less.

Justin S. McFarland

-----Original Message-----
From: erps-list-bounces <at> lists.erps.org
[mailto:erps-list-bounces <at> lists.erps.org] On Behalf Of
erps-list-request <at> lists.erps.org
Sent: Tuesday, June 01, 2004 3:00 PM
To: erps-list <at> lists.erps.org
Subject: ERPS-list Digest, Vol 10, Issue 1

Send ERPS-list mailing list submissions to
	erps-list <at> lists.erps.org

To subscribe or unsubscribe via the World Wide Web, visit
	http://lists.erps.org/mailman/listinfo/erps-list
or, via email, send a message with subject or body 'help' to
	erps-list-request <at> lists.erps.org

You can reach the person managing the list at
	erps-list-owner <at> lists.erps.org

When replying, please edit your Subject line so it is more specific
than "Re: Contents of ERPS-list digest..."

(Continue reading)

cpwinter | 2 Jun 01:44 2004
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Minutes of ERPS #283

Minutes of ERPS General Meeting #283
27 May 2004

THIS MEETING WAS POSTPONED ONE WEEK beyond the normal date because key 
members were in Washington, DC for COMSTAC.

The President called the meeting to order at 8:40 PM. Members present were 
Rick Eversole, Sean Lynch, Dave Masten, Pierce Nichols, Gerald Nordley, 
Adrian Tymes, Michael Wallis, David Weinshenker, and Chris Winter.

Reports and discussion on agenda items were as follows:

DOCUMENTATION
-------------
Chris Winter

	A correction to entry in previous minutes: Henry Spencer paid for his 2004 
CD-ROM.

	Nothing else to report

INFOTECH
--------
Sean Lynch

	Nothing to report

LIAISONS
--------
Michael Wallis
(Continue reading)

John Carmack | 2 Jun 10:24 2004
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Re: AeroAstro GPS-IMU

At 06:43 PM 6/1/2004 -0400, you wrote:
>John,
>
>What sort of duty cycle and frequency do you require for your baseline
>operations?  Some universities have developed some equipment that you may be
>able to contract out for even less.
>
>Justin S. McFarland

Our IMU has 100 hz bandwidth and a 180 hz update rate.  Our GPS has a 10 hz 
update rate.

I prefer commercial equipment that I know I can get more of, but I'm not 
dead set against research equipment.

John Carmack
Michael Wallis | 2 Jun 19:20 2004

SS1 to try for Space 21 Jun

> From slashdot.com

Science: SpaceShipOne 100km Attempt Slated for June 21

Posted by timothy on Wednesday June 02,  <at> 01:00PM
from the good-luck-to-the-crew dept.
apsmith writes "Scaled Composites has just announced their first
attempt at breaking 100 km, scheduled for June 21. This would make it
the first commercial manned vehicle to officially enter space. This is
not quite an Ansari X prize attempt since it will carry only one
person without the extra mass corresponding to the 3-person prize
requirement; they have to give at least 30 days' notice for that. Past
flight history is available from their site; the Discovery Channel is
producing a documentary on the whole project, 'Rutan's Race For
Space.'" Roger_Explosion adds "If successful, the craft - named Space
Ship One - will become the world's first commercial manned space
vehicle. Space Ship One will temporarily leave the earth's atmosphere,
and the pilot (yet to be announced) will experience about three
minutes of weightlessness."

The SCI press release is here:

   http://www.scaled.com/projects/tierone/New_Index/news/062104.htm

    Michael

----------------------------------------------------------------------
Michael Wallis   KF6SPF       (408) 396-9037        mwallis <at> wallis.com

"And I keep praying that this faith we hold in common keeps showing up
(Continue reading)


Gmane