2 Stage Water Rocket - Part 37 - Middle Bracket
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- Опубликовано: 8 фев 2025
- This week we make the middle bracket for the Horizon booster. This bracket helps hold the booster together, holds the entire rocket down on the pad, has the staging mechanism and supports the weight of the sustainer during acceleration.
There is no way you'all won't beat the world record when you launch this. With all of the work you have put into this project It will be a well deserved honor to have the highest flying water propelled rocket in the world. Can't wait for the Launch footage!
Thanks. We're pushing really hard to get everything wrapped up and ready for launch. I think there are 67 days left before launch and a huge amount of work still to be done. But having fun doing it.
Awesome craftsmanship. I wish my composites work looked that nice. Best of luck finishing this project, I'll be watching along.
this is like engineering ASMR haha :) The amount of work that goes into just one piece of the whole puzzle is always impressive! Ive been told i have a lot of patience, i can only imagine how much it takes to make these! Looking forward to more as always :)
And making the video of it adds another big complication!
I subscribed YEARS ago. Your dedication to water rockets is unbelievable, you might be one of the most knowledgeable person in the world on the topic.
Cheers! Thank you for following along :)
First! I'm out of the water rocket hobby but I still enjoy the engineering behind your carbon rockets. Cheers George!
Thanks for following along :)
What we find most interesting with your designs is the connection of old and proven methods like the layering of carbon and creating temporary wooden holders with all of the new stuff. That incorporation surely uses the best of both worlds. Not to experimental to have a high risk of failure but still using the weight optimization from 3d printing molds etc.
A lot of the techniques we use are just things we are familiar with or that we've seen others do. Sometimes we are limited by the tools we have as well. (We'd love to try vacuum forming for example) We do spend quite a bit of time thinking how we go about constructing something and figuring out what tools or jigs we'll need to make specifically that part. Often we are limited by the materials we have on hand. That's a part of the fun challenge. But in reality a lot of it is just guesswork with a calibrated eyeball. :)
Wow, what a complex part to manufacture. Great job!
I love your videos, and I admire your persistence. Please continue!
Thank you! :)
Great piece of work! Very inspirational as usual.
Cheers! :)
Nice! Can't wait to see this finally fly hopefully in person ;)
wow looks awesome! pcbway are now 3d printing titanium and aluminium, which would be a much quicker solution. But whoahhhh get ready for the price!
Yup, it would be nice to have some of this stuff manufactured. But like you said the price is an issue.
impressive and inspirational
Cheers! :)
Carbon sections look clearn af.
Why to stack the stages inline? It's too long, I'm concerned about stability (stiff/flimsy) - aerodynamical issues. Higher weight for the structure might be necessary. Why not the short stack, with second stage being in the middle, between the boosters of the first stage? All because of the concept for stage separation and launch stand?
I am not sure I quite understand your question. The second stage IS in the middle between the boosters. Water rockets by their nature are more efficient when they are long and thin. The second stage is almost 3 meters long. When the booster accelerates at 50G trying to make sure that long and skinny second stage doesn't just tip over is not that simple. So the booster is designed to hold the second stage vertical during that acceleration. The rocket will have some AoA on the way up and the force on the second stage will be great trying to rip it sideways. We need to have the whole staging mechanism half way up the booster rather than at the bottom to make sure the whole rocket is stable. (moving the center of gravity further up).
@@AirCommandRockets Thanks for quick reply and sorry for the unlucky wording of my question. You’ve understood it well though and answered it clearly. I do appreciate it. I get the thinking behind the layout much better. I was very astounded about the length to diameter ratio of the second stage. And it seems that weight ratio between stages is a bit unusual as well. I would have expected numbers between 4 and 5. Depending on the specific impulse and empty to full weight ratio of each stage it might get outside of this interval, but I thought I saw you using some calculating tools for conceptualizing this numbers for your design. I wasn’t entirely sure if the design was a compromise between the calculations and meaningful building and operating effort of your launching set up. Thanks again, and sorry for my challenging English - I'm not native in it.
Thumbnail looks like a pelton wheel turbine !
any guess of the total weight of the rocket (with and without the water)?
For the full 2 stage stack. With water ~20Kg and ~9.5Kg dry +/- 0.5Kg. We should have much more accurate weight estimate for the booster fairly soon. The booster weight is not that critical 100 grams here or there doesn't matter much. The peak thrust is around 1 ton. What is more important is weight distribution on the booster to make sure it remain stable throughout the entire flight with and without the sustainer.