What did you do rocket wise today?

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I finished my homemade "El Cactus Loco" rocket. Turned out nice, I think. I used Open Rocket to see if the inverse fins will be stable. The nosecone is a balsa Falcon Heavy nosecone.
 

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Worked on the Boyce 1/100 Mercury Atlas and Mercury Redstone.
Got some color on the capsules and towers, and primer on the bodies.
20191203_135842.jpg

And attached the fins, vent covers, launch lugs and rail guides (options, options) to the 1/27 Boyce MR.
20191203_153040_HDR.jpg
Somehow managed to break in half the aerospike even before it's finished.
Good thing Boyce includes a couple of spares.:D
Next, primer and sanding (cough).
Cheers.
 
IMG_2390.jpg IMG_2389.jpg
Designed and started building a launch controller.
It uses a couple of transistors and an automotive relay.
Now I just have to find an enclosure and mount all of the switches, etc.
 
Met with the senior team---not NASA, they were too late for that. Just as well...understanding is severely lacking.

Team leader asked how the parachute was ejected. Had to explain 'ejection charge' to him. This is an Estes Nike-Apache, not a high power rocket. Y'know, at that age, if there was something I didn't know about rocketry (or whatever was my strong interest at the time), I'd damned well dig it up post haste. Today there's YouTube, the WWW, innumerable web pages and forums. "It's raining knowledge, kids! Grab yourself a bucket!!"

Came home and relaxed by applying fillets to the 3" Aerobee that's nearly done. Juts three conduits, rear centering ring, internal fillets, railbuttons. I am taking Chuck H's approach with this one. It will fly naked. If it comes back, it earns its paint. :)

Best -- Terry
 
3D Printed Rocket at Sara December 2019 1st Wednesday Launch. I have a 3D printed rocket with a camera in it. It's a beautiful December day in Tucson. Southern Arizona Rocketry Association has a rocket launch at Udall Park. Everything works out just right.
#3DPrinted #ModelRocketry #UdallPark #TucsonAZ
 
I've been toying around with a new rocket tracker of my own this week in my relax time at night. I have u-blox SAM-M8Q GPS data streaming over LoRa from the tracker to the ground station along with distance & bearing calculations showing on an LCD. It's still baby steps and I'm just using pre-made hardware, but it's fun to do. I might start designing a new PCB soon.
IMG_4748.jpg
 
This is a scratch build dimensions scaled off the Pegasas modelPegasus_9911_When_Worlds_Collide_The_Space_Ark_24__22262.1394999320.1280.1280.jpg . I am using an original Estes Maxie-Brute V2 as the fuselage although I still have to work out how to round the boattail. There is so little wing that I will be building a wind tunnel to check air worthiness.
 
BruceS said:
This is a scratch build dimensions scaled off the Pegasas modelView attachment 400143 . I am using an original Estes Maxie-Brute V2 as the fuselage although I still have to work out how to round the boattail. There is so little wing that I will be building a wind tunnel to check air worthiness.
Click to expand...
Bruce, so this will be flyable, right? I checked out the Pegasus kit and is is a scale model, not a rocket. This should be an interesting project. Do you have a Build thread?
 
The intent is a fully flyable rocket. I got the Pegasus model as it supposedly is based on the blueprints from the original prop. I'd like it to end up as an RC glider, but that's further down the road. I haven't done a build thread as there will be long pauses along the way.
 
BruceS said:
This is a scratch build dimensions scaled off the Pegasas modelView attachment 400143 . I am using an original Estes Maxie-Brute V2 as the fuselage although I still have to work out how to round the boattail. There is so little wing that I will be building a wind tunnel to check air worthiness.
Click to expand...

Just use a nose cone for the boattail, slot it for fins cut off tip. Use the 4" pinnacle nose cones, or AeroTech 2.6" nose cones they are longer aspect ratio and would more closely match that model. 3d print track sections for the launcher like in the movie!!!
 
Greg Furtman said:
Dwight, do you have a build thread? A schematic diagram to share? Thanks.
Click to expand...
I don't have a build thread yet. I'll probably do a thread when I get the launcher completed. Right now I'm trying to figure out what type of enclosure to use. Leaning toward a 50cal ammo can, I have a couple tossed on a shelf somewhere I think. Thinking about making an aluminum inner panel to mount switches and jacks and leaving about half of the can unused. Then I can mount my key switch and launch button in a smaller box that could be stored in the ammo can when not in use. I like it when things stay together, I forget less things when packing up to go to a launch that way. I'm using 3 pin XLR plugs for the cord that connects the two boxes simply because I have a bunch of long, unused microphone cords. The circuit board is really simple, 2 transistors, 4 resistors and 2 diodes. Probably going to use a small marine battery simply because I have a couple laying around. Transistors, diodes, resistors, protoboard were all tossed in a drawer in my workbench. Starting to see a theme to this build?
 

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