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Their dream was to soar up high With their rocket soaring towards the sky They worked hard to make it fly But things didn't go as they hoped, oh my! Their rocket disappeared into the blue Or maybe it blew up, the sad truth Left with a TeleBT receiver, they stewed Wondering what to do, feeling...

This is the Artemis staging adapter. It couples 27.5’ to 16.5’ and has 10,000 cubic feet of volume. It is much bigger than my daughter’s studio apartment in New York.

I've had a few launches where the shear pins snapped prematurely due to airframe whiplash. Recently we have been testing different drogue-main deployment methods and we have a backup chute in a third compartment held in with shear pins that is remote pyro deployed. It is a challenge to use shear...

I used to make PVC stands and custom stands for my rockets and then one day these students showed up from MIT with tiny little back packing stools. These are genius for large rockets and cheap (you can find them for $10-11. They are super lightweight, each support 200 lbs, pack small, and they...

I did a quick design on a basic box for an Eggfinder LCD this weekend. I just wanted a small no frills box and didn't want to take the time to hack up a blank project box, so I 3D printed one. It does not have room for a voice module or base GPS module. It is for the RevB2 hardware and a 7.4v...

I've got a new version of our custom PCB loaded up and I've added a Ublox M10S for testing this weekend. So far, on the ground I am really impressed with the M10. With their current firmware it seems I can only configure three GNSS constellations and SBAS. Out of the box it defaults to GPS...

My son and I have been testing an experimental spring/latch recovery system that does not require BP. The test vehicle is a 90 pound 8" beast of a rocket. It has an 18' main and drogue out the top, using the spring and electronic latches and in the fin can it has a backup 14' main with pyros...

This "Project Mars" book was written by Wernher von Braun in 1949 (translated from German the same year) and describes the technical effort to colonize mars, along with a detailed account of what would be needed and how society would function. Set in the futuristic 1980's, it describes the need...

Here is our AvBay sled for a Perfectflite StratoLogger CF to fit in a standard 3" AvBay with 1/4" threaded rods. It aligns perfect to Madcow 3" aluminum bulkheads and is designed for use with a 300mah 45C 7.4v Lipo battery. https://www.thingiverse.com/thing:5348889

I've got an 8" fiberglass airframe with a 15" zipper, at the top of the fin can, that I am going to attempt to repair. The zipper happened after landing when the fin can dug into the tundra and the main was whipped around by 30mph winds. This is ironic, as the vehicle was coming in ballistic at...

I've got a 100 lb 8" rocket (14 feet tall) that I'm using to test an experimental HED deployment system. As a back-up, I've got an 11 foot chute in the fincan, below the avBay, that is triggered by radio controlled pyros (a poor mans FTS if the HED system fails). In a flight this weekend the...

I've been meaning to post this for six months, but things got busy. My son and I did a 4" to 3" minimum diameter two stage last year and we couldn't find a lot of plans that worked for us, so we crafted our own based on others input and designs. Our rocket was hacked together using two existing...

I know this question has been asked in at least a few threads, but the situation is slightly different and I want to ask it again to check my math. We are experimenting with a new spring latch deployment system on a large 8" 200 lb rocket. This won't use pyros, so you don't have the typical...

Joe Bernard and Xyla Foxlin and a merry gang of engineers launched a Christmas tree out at FAR a few weeks ago. This was epic and even more amazing in person. A perfectly stable flight and a “tumble recovery” :)

Does anyone have a Wildman Jumbo 8" Interceptor sim file? (OR or RS) I am going to build one of these to use as a test platform for a new deployment system, but it would be good to sim a few things before the kit arrives. I can upscale and modify the 6" version, but if anyone has a more...

Last week, my son and I launched a two stage sugar rocket to about 25k feet using our flight computer and a backup StratoLogger on the sustainer. On this launch, the GPS data and velocity data indicated much lower altitude than the barometer, so we pulled the data from the StratoLogger, and to...

For a very large bipropellant rocket we are doing head end deployment (HED) of the drogue and the main. The rocket is an 8" airframe, 180 pounds (dry) and will use a seven foot drogue and a 26 foot main. The nose cone is ejected using a spring (solenoid) latch mechanism releasing the drogue. The...

Has anyone tried printing metal with the BASF Ultrafuse 316L filament? The early reviews look impressive for something we could now do at home (with mail order sintering). I am curious to see how it would hold up to printing nozzles and just how big those nozzles could get and still be...

My son and I are jumping into staging pool for the first time with a 4" to 3" scratch build combination. We have our own flight computer that we have been perfecting over the past few years, so we made substantial modifications to support our staging endeavors. We are going to fly the flight...

About a month ago, my son and I decided to ditch the packaged EM7180 board we were using for tilt angle monitoring and roll our own, since most of the IMUs are a black box and/or they integrate accelerometer data, which doesn't work reliably for very long on rockets. The solution we had been...