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Registered Member #158
Joined: Sun Feb 12 2006, 09:53PM
Location: Central Ohio
Posts: 282
Looking good! Thanks for capturing the excitement on video and sharing with us! What software do you use to make your videos... yours always come out pretty good. To bad you couldnt get the rocket to show up against the sky when it launches on the zoomed-out video... wonder if you painted it black or something... but still I think the sky pretty much will wash anything small out.
>>>EDIT: not sure where this came from, I didnt post this again??? Moderators can delete it please.
Registered Member #179
Joined: Thu Feb 16 2006, 02:08AM
Location: Hagerstown, Maryland - Close to Prime Outlets
Posts: 287
Thanks for the posts and formulas...I plugged in the estimated times from the video and found that the highest launch reached about 47.1 meters...minus resistance of course so it's a bit less.
To Jason: I picked those thicknesses only because that's what I got my hands on...nothing else. Once I got the aluminum slugs, I designed everything else around them. From my other ILs, I did discover that thicker aluminum is definitely better....e.g. hard disk platters are nothing compared to 1/8" al in terms of efficiency and energy output.
If you plan to build an EMRocket, PM me if you have any Qs about getting things to stay together during launch...mine aren't perfect, but they're much better than my first attempt.
I think I'm going to leave the solder connections as-is...it's a built in fuse, helping to protect my SCRs
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EM Rockets Launched! Video!!
