Water Rocket with long camera boom
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- Опубліковано 5 лют 2025
- Today we flew a water rocket with a deployable camera boom so that we could film a rocket in flight from close proximity. This is an extension of an experiment we flew a few years ago.
I love these "back to the roots" experiments.
Your experiments with skittles in microgravity, toilet paper drop, camera boom, camera in parachute... once showed me, what is possible with water rockets and made me build my first own water rocket.
Greetings from Germany
Glad to hear you are having fun with water rockets too! :)
I think Friday should be experimental day at Mullaley.
I know there are loads of ideas that people are sitting on that they would like to do.
Great idea!!
They live five and a half hours from Mullaley.
Brilliant set-up and awesome video footage from the rocket. I used pop bottles many years ago to build a water rocket. For the launch mechanism I used cable ties connected to a slip ring on a wooden base and the hole bits of the cable ties were clipped onto the bottles neck, the part that forms a ring around the cap area. This held the bottles open part against a rubber seal. We had a string attached to the slip ring and that was the release mechanism. Was a bit temperamental to keep the bottles in place but it did work. We used a hand pump but only put 60 to 70 PSI in the bottle. You guys have obviously taken it to another level with your rockets. Amazing piece of work and ingenuity. Cheers from Scotland mate. 👍👍👍
Интересно. Мои ракеты объёмом 0.5 литра летают лучше так как давление 10-12атмосфет на старте
Смотрите мой канал на Ютубе называется водо старт
Удачи!
I always enjoy to watch those water rocket videos from the far side of the world!
It's a little off-topic, but how much pressure did you put in the rocket for this test ?
2:19 "shampoo to help reduce the top speed" Do you mean reduce the acceleration, not the speed ?
So with the shampoo it reduces the intensity of acceleration, but the rocket accelerates over a longer time and at the end the rocket goes higher. Is this correct ?
These were pressurised to 120psi, (8.3bar). The foam reduces the average thrust to about 2/3 of what it is with water alone but gives you almost double the burn time. So it reduces peak acceleration, and the top speed. Similar to reducing the nozzle size.
@@AirCommandRockets all the watching of your videos and I never pick up on the fact!
@@AirCommandRockets Ok thanks :)
@@AirCommandRockets I would like to see if you put the water with some detergent in a food blender and totally foam it up before putting it in the rocket.
You get some very stable and very small bubbled foam this way.
My gues is you get a very long intermediate fase between waterfase and airfase.
@@bartpijpers3844 The problem is as soon as you start pressurising those, the bubbles collapse and you end up with mostly liquid again. We tried this with shaving cream that has millions of tiny bubbles and on compression you ended up with just liquid that mostly stayed a liquid after decompressing again. Ideally you want high pressure tiny bubbles that are created after the rocket is pressurised. We developed a technique called "Jet Foaming" that creates these high pressure bubbles in flight. ua-cam.com/video/wIwJxc8PnnA/v-deo.html
Fly a fpv drone next to it. I have seen it done before on another channel. But that requires a very skilled fpv drone pilot.
That would definitely take some skill!
Felicitaciones George!!!
Ustedes siempre innovadores!! 👍👌
Gracias :)
Pretty cool idea! Glad to see that club launches are starting up again
Thanks. It was definitely nice to get out to a launch site again and see fellow rocketeers.
Really cool idea! You could use some carbon fiber rods, as they would be stronger.
I think that would definitely help because they are much stiffer as well. Might make the boom a little less shaky too when deployed.
very good video
The rocket is really cool ... I don't understand water, but this rocket is inspirational.
Your work is always well thought out an exhibits great engineering
Cheers!
Greetings from Ukraine. Good idea.
Which Tornado Tubes do you use? do you use any o-rings?
We use these ones. www.coolthings.com.au/vortex-valve-tornado-tube.html We enlarge the hole and also use a couple of rubber washers on the inside rather than o-rings.
Thank you! Ciao from Italy
Love your work mate, well done.
Thanks Jase! :)
Love your work George…
Cheers Cran! :)
Happy New Year! Still waiting for your next video!
Buen video y buen invento para grabar el cohete en vuelo
Still great work George.Congrets.
Have you thought of making the boom and camera as aerodynamic as possible to reduce drag ? And a dummy boom on the other side to balance it ?
Try the insta360 camera. Should be nice.
Hi, great video 👏👏👏.
What PSI are you charging your rockets to? I have built a few but I never dare go much above 110 PSI.
We normally launch at 120psi. Beyond about 130psi, the bottles deform permanently and then burst at around 190psi.
@@AirCommandRockets
Hi, thanks, I thought I was getting close but wasn't sure. Love your show.
👍🇬🇧
Very cool concept.
Really waiting for your next video???
Cheers. Working on it now. :)
Do you have a 3d design on the coupling you use to connect the bottles to each other?
The tornado tubes can be bought on-line: www.coolthings.com.au/vortex-valve-tornado-tube.html
@@AirCommandRockets Thank you so much!
Liked and commented, loved this video
Have you considered using a small 360 camera. There are some pretty small ones these days and you would see the whole rocket with a short boom. Also could you use a light capacitor instead of the nine volt battery. Might save some weight although I’m not sure what you are powering with it so maybe it wouldn’t be suitable.
We've seen some amazing footage from those 360 degree cameras that people have flown on rockets. We've looked at a couple but they are quite expensive, and flying them on rocket (as you saw) is risky. But it would be cool to put one out on a boom, and then erase the boom so it looks like the camera is just floating there. We use the 9V batteries for convenience when flying casual rockets. They are easy to mount, easy to connect and have a voltage above 6V. In higher performance rockets we use smaller LiPo batteries to save on weight.
I think a Blackfin 720 VR camera might work and be cheap enough to be reasonably expendible
Halfway to space!!! How did you pressurize & connect the bottles?? thanks
hello mr. katz, i have a question for you, you always fill the rocket with pressurised regular air, what would happen if you filled it with a gas which is heavier than air or lighter than air? i would love to see a demonstration of this, thank you, excellent video btw
this is a great idea!
Could you lengthen the boom back to its previous size but move the elastic release servo nearer to the top of the rocket so there is less stress on the boom during the ascent?
Launch 2 perfectly synchronised and identical rockets with one having 3x 120deg cameras giving a full 360deg circle of view.
Hello! Is the epidemia restriction somehow affect on your experiments?
I was missing the videos!
instead of a chute attached wings that retract for take off then fly it down. i started on this design but never finished
That’s awesome
Nice :-)
Would it be possible to mount the camera inside the parachute?
Yup it is possible. Here is a video on our old channel where we tried that. The video is about 11 years old now. ua-cam.com/video/CHHqk9nOvHo/v-deo.html
Brilliant :) I'd love to see an updated version with an HD camera and thinner chute cords, fishing line perhaps.
Interesting
Man that was 6 years ago?
Nice
What parachute do you use on this rocket and can I have a link to where I can get it
The parachute is home made from a flat sheet of lightweight ripstop nylon.
@@AirCommandRockets where can I buy one like that
@@sun5534 the-rocketman.com/ or www.rocketarium.com/Build/Parachutes/Nylon or aeroconsystems.com/cart/parachutes/
What if instead of the sticks being made of wood, they are made of carbon fiber?
I think that would be the way to go but kind of hesitant launching long conductive rods near power lines.
@@AirCommandRockets another material option would be fiberglass
@@emirustichelli7790 Agreed. There are fiberglass tent rods that may be a good option.
@@AirCommandRockets great then. Also keep in mind that it can be done in 3D. they are probably a bit heavier than fiberglass (depending on the thickness of the wall, and obviously hollow). But they are not flexible and that is good, since the wind would not bend them and it would not slow the rocket. Or so i think
My idea would be to pressurize the vessels with various gasses including carbon dioxide nitrogen and helium
We do intend to do some experiments with CO2. That should improve performance due to its higher molecular weight.
How much can cost a rocket that could ritch 150km hi ?
Do you mean a water rocket, or a regular solid/liquid propellant rocket?
@@AirCommandRockets what is cheaper.
I guess a water rocket cannot ritch that altitude
@@IgotQuestions. Yup a water rocket can only go a handful of km at most. For a rocket to 150km you are looking at tens of thousands of dollars as a minimum.
@@AirCommandRockets thank u sr
Érdekes egy ötlet.
Try carbon fibre rods.
Next Spacex launch.... Elon stole my idea!!
Very nice and interesting. Greetings from Germany :)
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