Mick Kelly
TRA#02937
- Joined
- Nov 8, 2018
- Messages
- 78
- Reaction score
- 47
Can anyone recommend a type of wood to use for fins? I found some 1/8" birch aircraft plywood, but at $112 per 4' x 4' sheet I'd like to know if I have any other options.
Sneaking in a little personal project printing into a pull-pin switch run today. First prototype of a nosecone tracking sled for my Falcon 3 is running as I type. Sled will hold a TeleGPS, Missileworks T3 and a Featherweight Tracker. That is a lot of stuff in a tiny area, so I need to check the fit of everything before I work in cable tie downs, battery retention and antenna supports (outside of the 1/4" dowel rod holder for the teleGPS antenna). I will probably take advantage of the extra room on the Featherweight side to mount the antenna there pointed aft (I'll use a cable to connect the tracker to the antenna) to keep the 900 MHz antennas apart. Everything, including trackers, fits in a 57 mm circle, so I should be good with respect to the nosecone walls.
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You reaaaaallly don't want to lose that rocket I see
...In reality all that is BS, I just over-think and over-engineer everything, it's almost to the sickness level. The above are just examples of the stories I tell myself to justify it.
A few tweaks needed, but not bad for a first draft. Fits great in the NC, plenty of room all around.
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And publish a paper.I love it! You can also tell yourself that this is a great way to get data directly comparing the three systems.
Ran a CFD study on a scratch build!
A few tweaks needed, but not bad for a first draft. Fits great in the NC, plenty of room all around.
Awesome. I dig the way you used the internal space as pockets for the LiPos. It's one of those "I wish I had thought of that" ideas that gets the gears turning.
And publish a paper.
....Any chance of interference with the transmitters all aligned in the same orientation like that?
Sweet.Version 2. The battery cover is removable, and recesses into the base 2 mm. Going to use a central 3/8" dowel rod as the support for all antennae. I'll just print spacers that attach to the dowel. This is much easier than making 3 independent support systems. I think this will also let me mount the FW antenna perpendicular to the MW T3.
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Sweet.
Question: Any chance this sled could become a production unit? Maybe with multiple mounting hole patterns for various trackers on each face?
Okay but.... If ya ever do a production unit like this, I would definitely be interested.That would be tough. The wide variety of batteries alone would make it difficult. Also, the T3 mounts very differently than other trackers. One of my production sleds goes through many more iterations than this one. That said, I learn with each new thing I build, so I could see some features of this sled working their way into future versions.
If you look at any generic windscreen wiper blade you'll see a strip that's exactly like the flat metal strip used as a retainer for estes b/c/d motors. You can get these for free by chatting to your local garage owner. Or look at the street when you're walking and you'll see these "strips" everywhere. Only when you don't need one in a hurry though......Could someone point to a source of the correct type of wire? There are *so* many different varieties. What weight and material?
What parameters did you chart and what data did you gather?
Oh, yeah... posted that here:
https://www.rocketryforum.com/threa...ift-vehicle-newbie-input.150182/#post-1859296
Did some experiments regarding CP. Static pressure is indicated on the surface.
Just so you know....I hate you.
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