Highlights from Day #180. We fly the Polaron G2 again a couple of times at Mullaley. The second part of the video also includes club member's HPR rockets also flown on the same day.
Really nice video, the Polaron G2 is a gorgeous rocket! The launch looks very impressive, I would love to see this rocket launching with my own eyes. I also enjoyed the Pyro Rocket launches at the end of the video. Keep the great work up. :)
It's always important to move on. :) We did the same thing with our SkyHopser and Swallow Rocket Fleet last year, because we realized there will be no process if we keep launching only these rockets. :)
Yup, the main chute opened about 10m above the ground slowing the rocket right down just before landing. Though how dense the canola is, the rocket would have been fine without any parachutes. If you've ever had the privilege of walking through armpit high canola you'll know what I mean. :)
I have a few suggestions for visibility. Paint the lower half of the rocket a flourescent color. Second, put some reflecting tape, the glass bead type, on the lower curve and use a headlight lamp next to the camera to shine on it, it should mark the back of the rocket in any light, but especially if there is a green color underneath it. Lastly , to get a longer sustained flight you could mill a smaller exhaust port in the end nozzel. Also for a straighter flight path you could put more spin on the fins, unless you are meaning to use a camera onboard. One more thing, I love the two liter re-use, however, thin wall PVC can hold more pressure, if I am not mistaken and more liquid also, and can be made as one long piece, but would be heavier. So there is the trade off. A fellow recommended CO2 for a propellant, but you would need a metal container, I think, or one of those graphite tanks for paint ball, 20 ounce and use it to eject the water. Foam is a good idea.
i dont know if this is a stupig question: have you ever thought about CO2 as a propellant on a water rocket? It liquifies at about 57bar and 20°C so you should be able to use a lot more water whilst keeping the volume of the rocket constant. Or Propane for 8bar...
Very reasonable question. Indeed we have thought about liquid CO2 for quite a while. We haven't built a pressure chamber strong enough yet to hold at least 60 bar, but one day we would like to try liquid CO2. Here are some discussions we had about 10 years ago on this topic: forum.ausrocketry.com/viewtopic.php?f=8&t=279
he will have to upgrade rocket booster to alloy with a honeycomb center to keep strength thus allowing the presure to vent through the veins of the honeycomb.
Good job George! I can see the rocket bending a little while launched. Is there any way to stop that? Because that's limiting how long we can make our rockets.
Good obeservation Mathieu! On the second flight the bend was very bad around the middle coupling and caused the rocket to fly in quite a bit of an arc. I guess the only real way would be to have a more solid fairing around that coupling, but I think that would only get you so far. We are only using PET fairings, but perhaps reinforcing them with fiberglass might help. Alternatively you could make the middle section of the rocket out of one long splice and then the top section and bottom sections could be shorter and coupled.
Nice video George.Happy new year. Great flight of the Polaron G2 rocket.Did you expect more from the rocket?(more height).I also had to walk through canola to pick up the rocket, I know that feeling:). Awesome pictures from the Pyro rockets departing at high speed.
What type of bottles do you use to reach that high pressure without making them to explode? I have used normal soda bottles and they blow up at 7, or 8 bar
GK, I noticed you loose a little altitude given lack of perfect vertical flight. I'm wondering if a gyro in the nose would help the rocket stay vertical and possibly gain slightly in altitude? Assuming of course it was a very light weight gyro just heavy enough to do the job.
Hi Michael, I don't think a gyro on its own would work. You need to cross link it to control surfaces. It is because the torque input is at 90 degrees to the torque output. Perhaps spinning up the rocket may help get it to fly straight. You would also want to launch it when there is no cross breeze.
well that's how it's done with gyros in an aircraft hooked into an auto pilot but in that circumstance there are gimbals. My thinking is a gyroscope with no gimbals. Two vertically oriented gyros mounted 90 degrees apart. I think it would make it go straight especially towards the end of the flight after most of the water has evacuated.. the problem would be the weight.
Ahh I see what you mean. :) Hmmm sounds like an experiment! But I think you are right the weight may be an issue. Perhaps they could be smaller, but spin faster?
yes exactly! ... and I understand a magnetic vortex at a high enough RPM starts to deflect gravity waves ... so with a proper assortment of magnets on the gyro at a high enough RPM maybe send your water rocket into space (for reals)
It would be difficult to make a step by step video of how to make the quick launcher as not everyone has access to the same components. But you can certainly use similar concepts that the quick launcher uses based on the components you have on hand. You may have seen this video already, but it describes the quick launcher in more detail: th-cam.com/video/V5rCtovp0FI/w-d-xo.html and the original video is here: th-cam.com/video/2eZPGdLlNmE/w-d-xo.html
Hello guys, this water rocket sounds like a dream idea but its only using pressured water. Can anyone tell me why nobody attempted to build a steam rocket, is there any way to turn a volume of water into pressured steam and release it via a nozzle as a rocket? That would be very ideal as water does not explode unlike all the existing rockets that goes into space...
People have built and flown stream rockets. The main problem is creating a pressure chamber that can hold the pressure at high temperature without being too heavy. Steam rockets are also quite inefficient when compared to chemical propulsion.
I am not sure I understand, but do you mean do planes get diverted around the launch site? Yes, the club issues NOTAMs via air services to let aircraft know that rockets are flying in the area. We still keep a lookout for any light aircraft/helicopters in the area. On this launch we were cleared to 8000 feet.
Great Videos, as always. When I see your videos in my subscription inbox, I scratch all plans I may have had for the next duration of the video, and watch it. Keep up the great work. I see you have acquired a 3D printer. How is that going for the rockets? Is it producing parts suitable for use on them?I have recently built a printer myself, and due to various reasons, have not been able to make proper rockets in the past(they consisted of a bottle on a cork with tyre valve, nothing more). But if the printed parts are working, that will change. On a similar note, I remember seeing in an issue of Make: that a guy was coating PLA fins with 5 minute epoxy. They go above supersonic speeds: 3dprint.com/37542/build-a-3d-printed-rocket/ . Also what happened to the "Gurgle Splunger rocket", and what where the failures?
Thanks! :) Yes, we've had the printer for a few months now and have been printing rocket parts with it. We are very happy with the quality of the prints and we'll be using it in some of our upcoming videos on the new more compact deployment mechanism for the high pressure rockets. We'll also be using it for making molds for various components. Bottle-on-a-cork rockets can be just as much fun as other types of rockets :) That's how we got started as well. I have seen people doing supersonic tests on 3D printed fins and there is definitely a lot of potential there even if you may need to protect the leading edges in some cases. Let's say "The Gurgler Splunger" rocket had a rather embarassed owner when he realised that he failed to include all the necessary hardware when assembling the motor. I believe it may have been his first CTI motor reload. Without the case, they look awfully like an Aerotech single use type ;) I'll leave it at that :)
It's great that the printer is working out, especially with the deployment mechanisms. It should hopefully allow very accurate duplication of working designs, than cutting out plastic with a knife(not that there is anything wrong with that). Hopefully it will benefit the hobby, as being able to reproduce the design, while matching the properties of the old design, will ensure that faults(as well as solving those faults) will match between(hopefully) all the makes of a particular design. This should then lead to more people being active, as they will not be such "lone wolves", when it comes to solving problems in a part, and contributing to the community(through testing, and contributing designs etc). Also it should mean more rapid development in technology in the field, as people can take designs , improve them, then make the design available to the community for use , and to enable further development. Who knows, we may have a similar evolution path to the REPRAP 3D printers, with open source and community development? PS: I searched up the Aerotech Motors. I guess a delay charge is important to the (successful )flight of the rocket? Also a small amount of fuel to increase pressure in the body, a while after the main burn, is known to improve the recovery of rockets, through the deployment of recovery technology. Would I be correct in saying that?
![[TH] 2024 PMSL SEA Finals D3 | Fall | รู้ผลทีมแชมป์ พร้อมตั๋วสู่ PMGC](http://i.ytimg.com/vi/7NxsN0Ch6vk/mqdefault.jpg)
Really nice video, the Polaron G2 is a gorgeous rocket! The launch looks very impressive, I would love to see this rocket launching with my own eyes. I also enjoyed the Pyro Rocket launches at the end of the video. Keep the great work up. :)
Thanks Julian, we had fun launching this rocket again :), though I think it's time to retire it and move on with other rockets.
It's always important to move on. :) We did the same thing with our SkyHopser and Swallow Rocket Fleet last year, because we realized there will be no process if we keep launching only these rockets. :)
I'm 11 and building my own water rockets, and my god, I've never seen a larger rocket
The show of the other launches was nice. I hope you can do it more often :)
Thanks for the feedback, we'll look into adding more of those in the future.
@@AirCommandRockets I liked the one that flew downwards, kekekeke
Looks like the parachute untangled itself just in time! "Big project," I look forward to it
Yup, the main chute opened about 10m above the ground slowing the rocket right down just before landing. Though how dense the canola is, the rocket would have been fine without any parachutes. If you've ever had the privilege of walking through armpit high canola you'll know what I mean. :)
I'll stick to using a parachute just in case
I have a few suggestions for visibility. Paint the lower half of the rocket a flourescent color. Second, put some reflecting tape, the glass bead type, on the lower curve and use a headlight lamp next to the camera to shine on it, it should mark the back of the rocket in any light, but especially if there is a green color underneath it. Lastly , to get a longer sustained flight you could mill a smaller exhaust port in the end nozzel. Also for a straighter flight path you could put more spin on the fins, unless you are meaning to use a camera onboard. One more thing, I love the two liter re-use, however, thin wall PVC can hold more pressure, if I am not mistaken and more liquid also, and can be made as one long piece, but would be heavier. So there is the trade off. A fellow recommended CO2 for a propellant, but you would need a metal container, I think, or one of those graphite tanks for paint ball, 20 ounce and use it to eject the water. Foam is a good idea.
It looks like they used fiberglass for the rocket body.
Nice jobs and very good launchs George !
Merci beaucoup François
Супер. Я практикую изготовление мини водяных ракет. Планирую заняться и более мощными моделями. Спасибо за ваш опыт
Hello, George! Beautiful video. Perfect blue sky, golden fields ... I hope your rocket does not hit hard, as the second parachute still open.
Cheers. :) The rocket was fine on landing the canola field that it landed on was pretty soft. The main parachute opened just in time to slow it down.
i dont know if this is a stupig question: have you ever thought about CO2 as a propellant on a water rocket? It liquifies at about 57bar and 20°C so you should be able to use a lot more water whilst keeping the volume of the rocket constant. Or Propane for 8bar...
Very reasonable question. Indeed we have thought about liquid CO2 for quite a while. We haven't built a pressure chamber strong enough yet to hold at least 60 bar, but one day we would like to try liquid CO2. Here are some discussions we had about 10 years ago on this topic: forum.ausrocketry.com/viewtopic.php?f=8&t=279
Propane, a little nitrous oxide and you have a proper rocket!
he will have to upgrade rocket booster to alloy with a honeycomb center to keep strength thus allowing the presure to vent through the veins of the honeycomb.
Always great job and in expecting to see you 2017 work! Greetings of C3
Thanks :) Happy new year!
Amazing!
Impressive camera tracking.
Incredible vid. Keep it up.
Happy new year George and Dad.
Cheers Dave. Happy new year to you and your family too!
Good job George! I can see the rocket bending a little while launched. Is there any way to stop that? Because that's limiting how long we can make our rockets.
Good obeservation Mathieu! On the second flight the bend was very bad around the middle coupling and caused the rocket to fly in quite a bit of an arc. I guess the only real way would be to have a more solid fairing around that coupling, but I think that would only get you so far. We are only using PET fairings, but perhaps reinforcing them with fiberglass might help. Alternatively you could make the middle section of the rocket out of one long splice and then the top section and bottom sections could be shorter and coupled.
Nice video George.Happy new year. Great flight of the Polaron G2 rocket.Did you expect more from the rocket?(more height).I also had to walk through canola to pick up the rocket, I know that feeling:). Awesome pictures from the Pyro rockets departing at high speed.
Very nice!
apply some sugar rockets after water rocket on the middle so that u get mote thrust to launch
Areeb Thind then how do you light them
Good job guys!
Thank you Basrockets. :)
F for Jeff
that is really cool
how to make it can u give me idea.i want to make it for science exibition
Nice
Cheers
Has the NAR taken a look at what you do? I have mentioned Water rockets to them with not much success...?
In what context would the NAR be looking at water rockets?
What type of bottles do you use to reach that high pressure without making them to explode? I have used normal soda bottles and they blow up at 7, or 8 bar
These bottles are reinforced with fiberlglass. They will hold around 20 bar max.
GK, I noticed you loose a little altitude given lack of perfect vertical flight. I'm wondering if a gyro in the nose would help the rocket stay vertical and possibly gain slightly in altitude? Assuming of course it was a very light weight gyro just heavy enough to do the job.
Hi Michael, I don't think a gyro on its own would work. You need to cross link it to control surfaces. It is because the torque input is at 90 degrees to the torque output. Perhaps spinning up the rocket may help get it to fly straight. You would also want to launch it when there is no cross breeze.
well that's how it's done with gyros in an aircraft hooked into an auto pilot but in that circumstance there are gimbals. My thinking is a gyroscope with no gimbals. Two vertically oriented gyros mounted 90 degrees apart. I think it would make it go straight especially towards the end of the flight after most of the water has evacuated.. the problem would be the weight.
Ahh I see what you mean. :) Hmmm sounds like an experiment! But I think you are right the weight may be an issue. Perhaps they could be smaller, but spin faster?
yes exactly! ... and I understand a magnetic vortex at a high enough RPM starts to deflect gravity waves ... so with a proper assortment of magnets on the gyro at a high enough RPM maybe send your water rocket into space (for reals)
5:37 at least the launch escape system works.
how to prepare this rocket..?. pls tell me apparetus
It's cool :-)
Cheers
Cool :) What is the total start weight of the Polaron G2?
Close to 20Kg.
Where do you get all of your water bottles that you use for your rockets?
Left over bottles from friends and family.
Can you add a third stage on top of the sustainer.
That was the original plan, however, we have now retired this rocket to focus on some new projects.
Really curious to know what altitudes did the "fire" rockets reach
If I remember correctly, some went to just over 7000 feet.
Wow, that's impressive!
Hola yo recién empieso en el tema
Would it be possible to make a video about how to make the quick launcher?
It would be difficult to make a step by step video of how to make the quick launcher as not everyone has access to the same components. But you can certainly use similar concepts that the quick launcher uses based on the components you have on hand. You may have seen this video already, but it describes the quick launcher in more detail: th-cam.com/video/V5rCtovp0FI/w-d-xo.html and the original video is here: th-cam.com/video/2eZPGdLlNmE/w-d-xo.html
AirCommandRockets ok,thanks
MUSIC for anyone wondering: Opening Night - Jason Farnham
(again, doesn't take much to copy/paste in the description, does it?)
Hello guys, this water rocket sounds like a dream idea but its only using pressured water. Can anyone tell me why nobody attempted to build a steam rocket, is there any way to turn a volume of water into pressured steam and release it via a nozzle as a rocket? That would be very ideal as water does not explode unlike all the existing rockets that goes into space...
People have built and flown stream rockets. The main problem is creating a pressure chamber that can hold the pressure at high temperature without being too heavy. Steam rockets are also quite inefficient when compared to chemical propulsion.
@@AirCommandRockets Possible only if somebody can build a smaller heat source
@@oswaldoriginal5037 With steam rockets the power source and heating elements are normally on the ground so don't have to be lightweight.
@@AirCommandRockets What? YOU mean the heat source produce steam to a pressurised vehicle then let the vessel fly for a few seconds?
@@oswaldoriginal5037 th-cam.com/video/457DSAxuwBY/w-d-xo.html
What liquid do you pour in they bottles?
Just water with some food colouring.
from where can i buy this
These rockets are not available commercially. You have to build it yourself.
самолёт не собьют?
I am not sure I understand, but do you mean do planes get diverted around the launch site? Yes, the club issues NOTAMs via air services to let aircraft know that rockets are flying in the area. We still keep a lookout for any light aircraft/helicopters in the area. On this launch we were cleared to 8000 feet.
super! thank you very much!
What is the fuel name
water and compressed air
how you make the motors?
www.aircommandrockets.com/construction_index.htm
水火箭 雷達偵測的到嗎
How do you measure altitude?
We use commercial barometric altimeters like the AltimeterOne or AltimeterThree from JollyLogic.
AirCommandRockets Thanks 👍
Hi, did you guys considered creating a Patreon?
Hi, we have not considered Patreon at this stage.
AirCommandRockets do it
Hi
Hi there. :)
Great Videos, as always. When I see your videos in my subscription inbox, I scratch all plans I may have had for the next duration of the video, and watch it. Keep up the great work. I see you have acquired a 3D printer. How is that going for the rockets? Is it producing parts suitable for use on them?I have recently built a printer myself, and due to various reasons, have not been able to make proper rockets in the past(they consisted of a bottle on a cork with tyre valve, nothing more). But if the printed parts are working, that will change. On a similar note, I remember seeing in an issue of Make: that a guy was coating PLA fins with 5 minute epoxy. They go above supersonic speeds: 3dprint.com/37542/build-a-3d-printed-rocket/ . Also what happened to the "Gurgle Splunger rocket", and what where the failures?
Thanks! :) Yes, we've had the printer for a few months now and have been printing rocket parts with it. We are very happy with the quality of the prints and we'll be using it in some of our upcoming videos on the new more compact deployment mechanism for the high pressure rockets. We'll also be using it for making molds for various components. Bottle-on-a-cork rockets can be just as much fun as other types of rockets :) That's how we got started as well. I have seen people doing supersonic tests on 3D printed fins and there is definitely a lot of potential there even if you may need to protect the leading edges in some cases.
Let's say "The Gurgler Splunger" rocket had a rather embarassed owner when he realised that he failed to include all the necessary hardware when assembling the motor. I believe it may have been his first CTI motor reload. Without the case, they look awfully like an Aerotech single use type ;) I'll leave it at that :)
It's great that the printer is working out, especially with the deployment mechanisms. It should hopefully allow very accurate duplication of working designs, than cutting out plastic with a knife(not that there is anything wrong with that). Hopefully it will benefit the hobby, as being able to reproduce the design, while matching the properties of the old design, will ensure that faults(as well as solving those faults) will match between(hopefully) all the makes of a particular design. This should then lead to more people being active, as they will not be such "lone wolves", when it comes to solving problems in a part, and contributing to the community(through testing, and contributing designs etc). Also it should mean more rapid development in technology in the field, as people can take designs , improve them, then make the design available to the community for use , and to enable further development. Who knows, we may have a similar evolution path to the REPRAP 3D printers, with open source and community development?
PS: I searched up the Aerotech Motors. I guess a delay charge is important to the (successful )flight of the rocket? Also a small amount of fuel to increase pressure in the body, a while after the main burn, is known to improve the recovery of rockets, through the deployment of recovery technology. Would I be correct in saying that?