- Jun 24, 2011
- Reaction score
Why is this event so quiet this year? I am really interested to hear if anyone attended.
So far the only infor we've gotten has been some pics of 2 new Aerotech Motors (one, a J that is non-Haz shippable), a few pics of the new Quest APCP low power motors, and a pic of the forthcoming Jolly Logic Altimeter 4 and an announcement that a new version of the Chute Release thats smaller is forthcoming.Why is this event so quiet this year? I am really interested to hear if anyone attended.
Wasn't he just fantastic? It was great to find out they're still doing it the same way as when Dad worked there. Inexpensive (relatively), fast and flexible.
Yeah, that one was really interesting. He examined drag on 1/4 inch launch lugs vs. rail buttons vs. rail guides, and included the airfoiled buttons. It had some interesting and surprising results.I have to get there next year. Still stuck in Taiwan on an extended business trip (darn day job).
I was talking with Tim Van Milligan prior to the event and he was planning a presentation on a drag study done on the airfoil rail guides. Anything happen on that subject? Maybe I will ask his permission to post it here.
Interesting - did the study focus on comparing the aerodynamic drag after the rocket leaves the rod/rail or also include the differences in frictional surface drag while on the rod/rail, as well as differences in having/not having rod whip, etc?A lot of it is personal preference, and there is always the argument about "how much difference does it REALLY make". .
I missed the first 5 minutes, but from what I saw he simulated the drag force of the lug shape only. He didn't show the relative affect on the overall drag of a typical rocket. Also, the results didn't appear to be scalable beyond the relatively low velocity he used in the simulations (affect of Reynolds number).I was talking with Tim Van Milligan prior to the event and he was planning a presentation on a drag study done on the airfoil rail guides. Anything happen on that subject? Maybe I will ask his permission to post it here.