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I would love to take credit for such a great time, but the real credit goes to all of the volunteers who gave so generously of their time and talents. Any special recognition should go to our event director Randy Milliken. Organizing an event like this is like herding cats. Much thanks to...

Here is a spreadsheet I put together many moons ago from Apogee's Peak of Flight news letter. Only fill in the light yellow boxes, everything else is calculated. The hardest part is determining a materials shear modulus. You also need to use RockSim or OpenRocket to determine the altitude at...

Actually, I am not. We are just talking about different things. The calculation of speed is only dependent on weight, drag and thrust. But that is not what the mfg. is talking about. They are referring to the entire flight profile, both up and down. If you calculate a delay for a given...

Yes, it was never a very accurate measure, only the "Max".

I thought that this reload predated the approved modification of delays. (Boy, I am SO! Old. :facepalm: )

Guys, not to be argumentative, but delay times most definitely DO effect max lift off weight. Remember that Thrust-to-weight or "speed off the rail" only determine a minimum speed for aerodynamic stability. All of the responses agree that if you change the lift off weight, you must also adjust...

The next few launches are on the club home page. August 13th, September 17th, and October 8th, all are on a Sunday from 10am to 4pm. Waiver to 10K', K impulse limit. Come fly the sod with us. Check the website for last minute changes, indianarocketry.org

"It's not easy having a good time! Even smiling makes my face ache!" -- Dr. Frank-N-Furter :dark:

A transition/shroud, https://www.payloadbay.com/index.php?page=Tools&action=TRANS

Thanks Gus for thinking about me. Finally got power back early this afternoon. At least I can take a shower now, and run the A/C. It will be a few days of chainsaw work just to get everything cut up, burning brush and splitting more. Sorry I missed the fun, looked like great flying weather. I...

Thanks Bob. Not only did the thread disappear, but my login would not work for a time, so I could not repost it. We will miss you this time. Hopefully the weather will cooperate.

Ok, last 3. Thanks Gus for taking the time to take all these, and share them.

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Since large crowds was one of the concerns of the land owner at Ash Grove, that is part of discussions with possible new locations. Another big issue is paperwork logistics. Once a location is secured, only then can new waiver request paperwork be submitted, and that could easily take 60 days...

Sorry Grandpa$, early weather forecast for next weekend look terrible. A quick poll of possible setup/teardown crews revealed few who could commit to the last weekend before christmas. Looks like the last flight at Ash Grove:( was a saucer on 'G' that came all the way from Cincinnati.:)

Never pass up a chance to get cool stuff

The board of Indiana Rocketry, received notice from our land owner that the Ash Grove launch site will no longer be available for rocketry activities in 2015 and beyond. We have expressed our thanks to the land owners for allowing us to use the property. And while we are all quite...