[RocketsNW] Rocket Flight Log

Tue Feb 2 11:49:04 PST 2010

Extra weight? What the motor?

Don
  ----- Original Message ----- 
  From: Dennis S Winningstad<mailto:winningstad at comcast.net> 
  To: 'Don Harris '<mailto:rocketsrfun at msn.com> ; 'Rockets NW '<mailto:rockets at rocketsnw.com> 
  Sent: Tuesday, February 02, 2010 10:09 AM
  Subject: RE: [RocketsNW] Rocket Flight Log

  But Don...why add all that extra weight and drag?

  Dennis S Winningstad
  503-781-3529

  -----Original Message-----
  From: rockets-bounces at rocketsnw.com<mailto:rockets-bounces at rocketsnw.com> [mailto:rockets-bounces at rocketsnw.com]
  On Behalf Of Don Harris 
  Sent: Tuesday, February 02, 2010 9:25 AM
  To: Rockets NW 
  Subject: Re: [RocketsNW] Rocket Flight Log

  You are correct as usual. Doesn't make since to mark the CG when it's going
  to change every time you put a different motor in it. But to please the
  parties that be; marking it without a motor in it couldn't  hurt...

  Don

  Sent from my Verizon Wireless BlackBerry

  -----Original Message-----
  From: Dennis S Winningstad <winningstad at comcast.net<mailto:winningstad at comcast.net>>
  Date: Tue, 2 Feb 2010 16:44:46 
  To: <pmschurke at seattleschools.org<mailto:pmschurke at seattleschools.org>>; <rockets at rocketsnw.com<mailto:rockets at rocketsnw.com>>
  Subject: Re: [RocketsNW] Rocket Flight Log

  I like marking the CP, but the CG can vary quite a bit, so just balance with
   a finger to see if/how far ahead of the CP the current CG is...eh?

   Dennis S Winningstad
   503-781-3529

   -----Original Message-----
   From: rockets-bounces at rocketsnw.com<mailto:rockets-bounces at rocketsnw.com> [mailto:rockets-bounces at rocketsnw.com
  <mailto:rockets-bounces at rocketsnw.com<mailto:rockets-bounces at rocketsnw.com>> ]
   On Behalf Of Schurke, Peter
   Sent: Monday, February 01, 2010 9:47 PM
   To: rockets at rocketsnw.com<mailto:rockets at rocketsnw.com>
   Subject: Re: [RocketsNW] Rocket Flight Log

   When some of my students are flying, the most important thing is "has the
   motor actually been installed in your rocket, or are you carrying an empty
   shell?" (They've been known to get nervous...and forget things....)

   Peter Schurke
   Science and Engineering Teacher, Lead Advisor
   Ingraham Aerospace Sciences Academy
   Ingraham High School
   1819 N 135th St.
   Seattle, WA 98133

   ________________________________

   From: rockets-bounces at rocketsnw.com<mailto:rockets-bounces at rocketsnw.com> on behalf of Fred Azinger
   Sent: Mon 2/1/2010 9:36 PM
   To: 'Dave Randall'; 'Paul Bowers'
   Cc: 'NW Rocketry Email Forum'
   Subject: Re: [RocketsNW] Rocket Flight Log

   Most important thing to know is how to confidently slide past the RSO and
  go
   to the pad with a look of confidence.... ;-)

   (Just Kidding)
   FredA

   -----Original Message-----
   From: rockets-bounces at rocketsnw.com<mailto:rockets-bounces at rocketsnw.com> [mailto:rockets-bounces at rocketsnw.com
  <mailto:rockets-bounces at rocketsnw.com<mailto:rockets-bounces at rocketsnw.com>> ]
   On Behalf Of Dave Randall
   Sent: Monday, February 01, 2010 6:37 PM
   To: Paul Bowers
   Cc: NW Rocketry Email Forum
   Subject: Re: [RocketsNW] Rocket Flight Log

   There are a couple of aspects to your question. First is the safety
   aspect. For that, you want to know:

   1. Where is the CP?
   2. Where is the CG?
   3. What is your expected altitude?
   4. What is the thrust to weight ratio?
   5. Has it flown before in the same configuration?

   Items #1 and #2 should be ideally documented (marked) on your rocket.
   Makes it real easy for the RSO. The other items come from RockSim (or
   other software you're using) and experience flying the rocket.

   For your own purposes, it may be more interesting to keep track of
   performance of the rocket in terms of altitude, velocity, total flight
   duration, and flight success, etc... Photos are always well
   complimented with a statistics table. See
   http://vernk.com/FITS2009.htm<http://vernk.com/FITS2009.htm> <http://vernk.com/FITS2009.htm<http://vernk.com/FITS2009.htm>>  for an
  example of data & photos &
   post-launch writeups done well.

   While not particularly consistent from one launch to the next, I try
   to keep my electronic organizer with me in the field for my flight
   log. I simply have a small text file that I log the rocket, motor and
   altitude. Most of my altimeters are recording altimeters, so I
   download the files after flying and sync up the rocket information
   with the altimeter data on the computer.

   Hope that helps, and I'm sure others will have some more great ideas...

   Dave

   On Mon, Feb 1, 2010 at 3:40 PM, Paul Bowers <padapolis at hotmail.com<mailto:padapolis at hotmail.com>> wrote:
   >
   > What data do you record in your flight logs?
   > And what do you use to record your flight data? (Scrap Paper,
   Spreadsheets, Dedicated Software, etc...)
   >
   > I'm getting back into the hobby and would like to eventually build high
   power rockets. I want to get into good data collection habits now, that
  way
   when I do need to present any of it to an RSO for inspection I'll at least
   look like I know what I'm doing. For me a software solution would be the
   most fun and it would give my prep area more of a launch control feel to
  it.
   >
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   --
   - Dave
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