Re: [PSAS] Shuttle Launch Party

2011-07-07 Thread Benjamin Kaplin
I'm in2 it. Gotta be at a meeting at 10 at PSU in any event...

On Wed, Jul 6, 2011 at 11:29 PM, Nathan Bergey nat...@psas.pdx.edu wrote:
 I was hoping that a few people might want to get together to watch the very
 last shuttle launch ever live on screen somewhere. This is a pretty historic
 event for rocketry and for humans in general. Unfortunately it's going to be
 early in the morning here. The target launch time is 8:21:46 am Friday
 morning. There is a lot going on in the last few hours before launch, so if
 anyone does want to meet up, at least an hour before launch would be a good
 idea.
 Reply if you want to meet up, and if anyone can get us into the conference
 room where we normally meet that would be awesome because I know it has a
 projector and internet.

 Otherwise I highly recommend everyone setting apart some time on Friday
 morning and tune into http://www.spacevidcast.com/ and watch the launch
 live. They're already streaming coverage 24/7 now. As I write this the
 countdown clock is at T-13:34:15 and counting.

 Also watch your email because I will update with any information about
 scrubs or off-nominal conditions.

 -Nathan
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[PSAS] dynamics, required reading

2011-07-06 Thread Benjamin Kaplin
http://www.youtube.com/watch?v=6mgFdn4lfrE

(it's only like three minutes and totally worth your time. plus, the
dynamics are outrageous.)

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[PSAS] innogrant results

2011-06-17 Thread Benjamin Kaplin
Ahoy!

Radio tower is a no-go for external funding, liquid propulsion is go
for funding.

--bk

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[PSAS] imagine this: a joke

2011-03-09 Thread Benjamin Kaplin
A 747's pilot and copilot both have heart attacks mid-flight. A flight
attendant gets on the PA to ask if anyone knows how to fly a plane.
Two Polish men stand up, saying that they're crop dusters. The flight
attendant escorts them to the cockpit. They stare at all the levers
and buttons in clear befuddlement, until one turns to the flight
attendant and says,

I'm sorry. We're just two simple poles in a complex plane.

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Re: [PSAS] New room for Saturday meeting

2011-03-05 Thread Benjamin Kaplin
I...am going to sleep in.

On Sat, Mar 5, 2011 at 12:32 AM, Jeremy Booth jboo...@gmail.com wrote:
 Sounds good.

 Let's meet up in the fishbowl, we can hit any quick questions, then fork for
 independent work.



 On Sat, Mar 5, 2011 at 12:26 AM, Andrew Louie aloui...@gmail.com wrote:

 Long and i will still meet up and work on some controls practice
 problems.  whoever wants to join can.  We will be in the FAB fish bowl
 at 9am.

 On 3/5/11, I kirk...@pdx.edu wrote:
  Dave's not available tomorrow, and neither is Marius or Rob, and Chris
  is probably tied up as well. Jeremy and I were thinking about meeting
  up to discuss our project, but I don't have any controls stuff to go
  over tomorrow because I'd rather wait until the whole crew is present.
 
  So, If Jeremy is up for it, I'll be meeting up with him. Otherwise, I
  wont be coming into Portland Tomorrow.
 
  I'll check email when I get up in the morning.
 
  ~D
 
  Quoting Andrew Louie aloui...@gmail.com:
 
  I wasn't able to get access to the room in time in time.  Are we going
  to meet at the PSBA tomorrow?
 
  On 3/4/11, Jeremy Booth jboo...@gmail.com wrote:
  Andrew:
  Probably a good thing for you to look into.  I understand the room is
  part
  of the CS department.
 
  Marius:
  Since we are starting to have presentations on various topics at the
  Tuesday
  general meetings, maybe you could work with someone to arrange an
  intro
  to
  Kalman Filters on a Tuesday?  It could be a good primer if we ever do
  get
  an
  outside speaker to present on Kalman Filters, and you'd get to help
  set
  the
  time, ensuring it works with your schedule.
 
  On Fri, Mar 4, 2011 at 11:39 AM, Andrew Louie aloui...@gmail.com
  wrote:
 
  how hard would it be for me to get badge access to 86-01?  i have
  access to the building and labs.
 
  On 3/3/11, Jeremy Booth jboo...@gmail.com wrote:
   I haven't reserved anything, but I'll try to grab 86-01.  I don't
   know
  that
   we have badge access to 86-01, so that's a consideration, but I'll
   make
   arrangements for this upcoming Saturday.  I will likely not be
   available
  the
   next Saturday.  I'll try to reserve the room, but I won't be
   available
   to
   get people in if we don't have badge access.
  
   We've generally met in 150 or at the PSBA.
  
   Side note:  I picked up the 2 wandering posters, and have them in
   my
   office.
  
   On Thu, Mar 3, 2011 at 8:00 PM, Jamey Sharp ja...@minilop.net
   wrote:
  
   On Thu, Mar 3, 2011 at 7:38 PM, Andrew Louie aloui...@gmail.com
  wrote:
Do we have the new room reserved for Saturday?
  
   If you mean FAB 86-01, Josh and I didn't reserve it for any time
   other
   than Tuesdays. I'd bet nobody else reserves it on weekends, so you
   could just show up there and take over until somebody tells you to
   stop. Or you could talk to department staff to officially reserve
   it.
  
   What space have you been using for the control theory class, and
   what
   time have you been meeting?
  
   Jamey
  
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Re: [PSAS] meeting tonight, including geometry/physics discussion

2011-03-01 Thread Benjamin Kaplin
I have a copy of the same book Dan recommended for quaternions in the
mail, so while I'm looking forward to your condensation of the
important bits, I'm going to hold my own questions off for a few weeks
while my book arrives and I wrap my head around the math.


On Tue, Mar 1, 2011 at 9:17 AM, Jamey Sharp ja...@minilop.net wrote:
 First off: Like last week, we're meeting in FAB 155, not the CS
 lounge/fishbowl. We're going to look into reserving FAB 86-01 for
 future meetings, and we'll announce tonight if that worked out.

 Last week Ben and I chatted about taking an hour of the regular
 meetings to explore rocket physics and, at his request, geometry
 topics---first up, quaternions. So let's try that tonight.

 During tonight's regular weekly meeting, from 8pm to 9pm anyone who's
 interested is invited to chat about rocket physics: how physicists
 model the forces on a rocket in the abstract, and how a practical
 computer model of those forces should work.

 I took some time last week to wrap my head around quaternions so I'm
 prepared to discuss what they are, why you want to use them in
 practical physics models, and how the important operations on them
 work.

 If we have time, I'd like to follow that up with discussion of how to
 implement forces that cause rotation in rockets. Several people in
 PSAS have been trying to explain this stuff to me over a period of
 years and I'm hoping to get some of it to stick, preferably in the
 form of executable code.

 See you tonight!

 Jamey

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[PSAS] torsion rod

2011-03-01 Thread Benjamin Kaplin
oooh oooh oooh also if I can borrow the torsion rod from whoever
currently is caretaking, the ROV team would be even further in PSAS'
debt...

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[PSAS] shuttle launch from a passenger plane

2011-02-27 Thread Benjamin Kaplin
http://patrickmylund.com/blog/catching-the-space-shuttle-discovery-launch-from-the-air/?utm_source=feedburnerutm_medium=feedutm_campaign=Feed%3A+patrickmylund+%28Patrick+Mylund+Nielsen%29

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Re: [PSAS] project mgmt

2011-02-24 Thread Benjamin Kaplin
Sorry, I didn't mean to imply that we should switch knowledge capture
over to some new system. I do think that the wiki is total *crap* at
managing goals, generating calendars and getting tasks, subtasks and
dependencies cleanly delimited.

If you get an install running, would you let me know? I'd like to put
the motor project on it and experiment with task delegation for 6dof
there as well. It's worth talking about in a group meeting though.

On Wed, Feb 23, 2011 at 1:21 PM, Nathan Bergey nathan.ber...@gmail.com wrote:
 I think this is a great idea and I can help. I've been looking at some free
 hosted suites but I'm not in love with any of them.  But I have used redmine
 once. It seemed nice.

 On Wed, Feb 23, 2011 at 1:06 PM, Benjamin Kaplin ben...@gmail.com wrote:

 I am interested in getting us onto a project management suite (for
 resumé padding purposes etceteras plus also wiki = yucki).

 The ROV team uses Redmine, and from the little bit that I've spent
 poking around in it, adding tasks, assigning tasks to myself etc, it
 looks like the bees knees.
 http://www.redmine.org/
 Does anyone have any input on this?

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[PSAS] other rocketeers musing about gps

2011-02-23 Thread Benjamin Kaplin
http://unreasonablerocket.blogspot.com/2011/02/gps-progress.html

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[PSAS] project mgmt

2011-02-23 Thread Benjamin Kaplin
I am interested in getting us onto a project management suite (for
resumé padding purposes etceteras plus also wiki = yucki).

The ROV team uses Redmine, and from the little bit that I've spent
poking around in it, adding tasks, assigning tasks to myself etc, it
looks like the bees knees.
http://www.redmine.org/
Does anyone have any input on this?

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Re: [PSAS] SolidWorks 2010-2011 academic licenses in

2011-02-12 Thread Benjamin Kaplin
I believe that I remember asking for twenty, but have no real clue.

On Fri, Feb 11, 2011 at 4:38 PM, Andrew Greenberg and...@psas.pdx.eduwrote:

 Hi everyone,

 We just received the (2) CDs for SolidWorks. Apparently we use these two
 CDs to install, and then we have as many licenses as team members (Ben,
 how many team members do we have?)

 I'll bring them Tuesday - see you then!

 Thanks,

 Andrew

 --
 ---
 Andrew Greenberg

 Portland State Aerospace Society (http://psas.pdx.edu/)
 and...@psas.pdx.edu  P: 503.788.1343  C: 503.708.7711
 ---

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Re: [PSAS] Fwd: staging designs, code inspection

2011-02-01 Thread Benjamin Kaplin


 I have some questions about masses as defined as well. If the proposed
 numbers mean anything, I'm not sure our final mass can be 1.22 kg. We need
 weight of last stage tanks, motor(s), etc. with the 1kg cube-sat.


This is what I was talking to Dave about this past Saturday - I'll explain
the estimation procedure to anyone interested tonight. I'm actively
interested in its flaws and other flaws like moving through lower atmo at
3000 m/s.
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[PSAS] Fwd: staging designs, code inspection

2011-01-31 Thread Benjamin Kaplin
REPLY TO ALL SHOULD BE DEFAULT SETTING.

-- Forwarded message --
From: Benjamin Kaplin bkap...@pdx.edu
Date: Mon, 31 Jan 2011 12:11:40 -0800
Subject: Re: [PSAS] staging designs, code inspection
To: David Harris dharris...@gmail.com

the code is aero model independent: plug in stages and delta v for
each stage, isp and fif, and it spits back masses. Aero modeling
should inform delta v apportioning.

delta v for leo is like 7500 (?) m/s, so there's a fat ol' margin in
those examples. I'd like to discuss aero modeling at the next meeting
(what it gets us, what we can engineer around, extreme values, max q
and whatnot.

On 1/31/11, David Harris dharris...@gmail.com wrote:
 Hi Ben,

 What aero model are you using and how are you calculating the gravity turn
 and angle of attack losses?

 Or at this point are you just adding some margin to the delta v target
 figure and just approximating?

 David

 On Sun, Jan 30, 2011 at 6:03 PM, Benjamin Kaplin bkap...@pdx.edu wrote:


 Ex:
 - m_i1  Mass of 1st stage only, including fuel
 - m_f2  Mass of 2nd stage only, excluding fuel


 This comment pointed out to me that the script was really only useful for
 designing a particular stage. So, to provide a more general tool, I
 rewrote
 the script. It should be a lot more user-friendly now. It allows for cool
 things like specifying the supportmass/fuelmass ratio on a per-stage
 basis.
 Enjoy!

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Re: [PSAS] staging designs, code inspection

2011-01-30 Thread Benjamin Kaplin
 Ex:
 - m_i1  Mass of 1st stage only, including fuel
 - m_f2  Mass of 2nd stage only, excluding fuel


This comment pointed out to me that the script was really only useful for
designing a particular stage. So, to provide a more general tool, I rewrote
the script. It should be a lot more user-friendly now. It allows for cool
things like specifying the supportmass/fuelmass ratio on a per-stage basis.
Enjoy!
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Re: [PSAS] Weather advisory, Tuesday 11-Jan-2011 meeting canceled?

2011-01-11 Thread Benjamin Kaplin
Well, those of us willing to brave the conditions will be here - and some in
fact are already!

On Tue, Jan 11, 2011 at 6:21 PM, James Perkins ja...@loowit.net wrote:

 On 01/11/2011 06:13 PM, Glenn LeBrasseur wrote:

 I just talked to Andrew (6 pm) and he thinks the weather is bad enough
 to cancel tonight's meeting. I'm in SE Portland right now and there is
 freezing rain coming down, and it seems to be sticking on the road.
 Temperature is 30 deg F here.


 It certainly could get bad enough. I'm net control for KD7ZDO at the
 moment, Clackamas ARES, we're running a weather reporting net (I'm running
 it from my home station - listen to 147.12 to hear me, or 147.32 for all NW
 Oregon/District 1). It seems to be getting colder with light precip
 everywhere. Near the gorge people are getting some icing.

 Cheers,
 James KN1X
 --
 James Perkins ja...@loowit.net  KN1X  www.loowit.net/~james
 28950 S Girard Rd, Colton, OR 97017+1.971.344.3969 mobile


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[PSAS] new NASA centennial challenges - nanosattelite challenge

2010-07-15 Thread Benjamin Kaplin
*The Nano-Satellite Launch Challenge*: to place a small satellite into Earth
orbit, twice in one week. The prize purse is $2 million.

http://www.nasa.gov/offices/ipp/innovation_incubator/centennial_challenges/cc_info_detail.html

The race is on!
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