Your CURVED rocket is obviously FAKE. I recognize a fisheye lens when I see one. Open your eyes, and realize that real rockets are FLAT! CURVED rockets are a lie by Big Apogee, who want nothing more than for us to give up our FREE water & buy their commercial APCP motors.
@leocarlton4364
5 жыл бұрын
Hahahaha
@BlisterHiker
4 жыл бұрын
- and the real rockets bounce back from firmament Space travel is a lie. They won't fool us no more! 😉
@antonipolski9569
4 жыл бұрын
?
@BPSspace
5 жыл бұрын
That bending is fascinating! Maybe not the adjective you'd use as the person who built it, but I'd love to learn more about it. Best of luck accounting for it next time!
@AirCommandRockets
5 жыл бұрын
Thanks Joe, yes a few adjectives to that effect could be heard :) , but it's just another issue to resolve along the way. We're putting together a followup video that goes into the details of why this happened, and also how we're fixing it. Hoping for another flight next month. (Love your work :) )
@AndreBandarra1
5 жыл бұрын
If things aren't going wrong you're not learning :) Great stuff George and like you said, lots of other things went well, including how to safely disarm the ticking timebomb that is a 900psi bent rocket! No mean feat my friend! :D
@AirCommandRockets
5 жыл бұрын
Thanks Andre. It was a good first test of the abort system with water in the rocket. I'm glad we had that in there. :)
@journeymancurmudgeon3113
5 жыл бұрын
Paint the next rocket yellow. If it gets bent, just name it the "Flying Banana"
@AirCommandRockets
5 жыл бұрын
Funny enough, the yellow rocket we had with us and launched it at the same pressure ... did not bend. :)
@jb42jb
5 жыл бұрын
You should have crushed one of those blue pills and mixed it with the water
@DeliciousDeBlair
5 жыл бұрын
Funny t-shirt idea: [composed like an old style newspaper headline, in black and white] "Chipmunks hurl carbon fiber bananas at the moon" All around the horizon rocket in the middle [perhaps the rocket, alone from the rest of the image could be in color], one chipper with a lab coat, a clipboard and coke bottle glasses, one in army gear and helmet, one with a propeller beanie cap and a slingshot in their pocket, and one with a dynamite plunger and steampunk style aviator's goggles, perhaps with a rather deranged look about him... Would make good project merchandise.
@lonl123
5 жыл бұрын
Thanks for the excellent video and thanks for showing the problems. As engineers we aren't ever going to learn anything if things don't fail every now and again. I am sure this is probably a minor setback. Cant wait to see next weeks video.
@AirCommandRockets
5 жыл бұрын
Cheers, we fully expect things to go wrong during development. We are just glad we caught this particular issue before building the booster. :)
@SterremanWillie
5 жыл бұрын
Love your sense of humour despite the setback in front of such a huge crowd! Looking forward to the explanation/fix-it video!
@AirCommandRockets
5 жыл бұрын
Thanks Willie, we're just providing the stuff the crowd really comes to see - the failures. :)
@SterremanWillie
5 жыл бұрын
Indeed! Its like watching motor racing, particular stock-car racing - it was not exciting if there were not any accidents! ;-) ;-)
@LateNightHacks
5 жыл бұрын
Performance anxiety, happens to the best of us
@AirCommandRockets
5 жыл бұрын
Yup, just couldn't handle the pressure. :)
@thalesnemo2841
5 жыл бұрын
Poor rocket was too exhausted to keep itself up!
@DeliciousDeBlair
5 жыл бұрын
[HOP HOP HOP!]
5 жыл бұрын
Nice tests! Congratulations for the finally good launch and all the lessons learnt! Thanks for sharing and keep going! ;-)
@AirCommandRockets
5 жыл бұрын
Cheers Francisco. :)
@q300SBB
5 жыл бұрын
A great demonstration of persistence, well done. PS: I love the teaser.. 😜
@MarcinKrukar
5 жыл бұрын
1200 psi = pretzel? ;) Great video, keep going!
@AirCommandRockets
5 жыл бұрын
Oooh that would have been fun to see :)
@williamlegotyler1825
10 ай бұрын
follow you from three weeks,i was not thinking something like thqt would happened,especially whit your organization,thats so funny,i seen the first bending,then i saw the second bending,and that was funny,not only one time a rocket bended,but you had a combo of two rockets! Thats so funny,but luckly e few videos later you maded the record! Great work,best rocket channal ever,oh i forget to subscribe! Ill do it now! I love your channal,i am learning so much from you
@AirCommandRockets
10 ай бұрын
Thank you for following along! :)
@williamlegotyler1825
10 ай бұрын
Omg you already responded? I never seen someone responding that fast,thanks!!
@lez7875
5 жыл бұрын
Greetings from Brazil to all. 3:27 Wow !!! this was unexpected !!! No jokes. I am in favor that all is well. for a great show at the end. This is rocket science. Not everything goes as planned. My sincere congratulations for all your effort and work. Congratulations to everyone on the team. success.
@AirCommandRockets
5 жыл бұрын
Thanks Le Z. :) We are already working on a solution, should be able to launch again next month.
@lez7875
5 жыл бұрын
@@AirCommandRockets. good night. This is night in Brazil. 23 : 47. Understood. waiting for good news. thank you.
@WATERROCKETSCLUB
5 жыл бұрын
Well done! This series is just like a film by Tarantino))) Emotions, tension, fear and humor. Yes, red goes well with the blue color of the sky, but as it turned out this is not technological. It is necessary to make the rocket body mirror. Or use a rocket hull cooling system, for example on dry ice. Congratulations on a successful test!
@AirCommandRockets
5 жыл бұрын
Thank you Water Rockets Club. Tarantino I am not so sure about .. well maybe the carnage. :) We will go to more details in the next video and certainly paint colour is one of the issues.
@dc54321x
5 жыл бұрын
Interesting and quite unexpected. Any idea of the temperature? Maybe incorporate a thermocouple so you can adjust the rate of pressurisation to keep the temp below x°. Fibreglass is a good insulator so you can't simply measure the outside surface temp.
@AirCommandRockets
5 жыл бұрын
Hi David, we have pretty good idea of the temperatures. In the next video we do a test with a test pressure chamber with a thermocouple on the inside and we measure the surface temperature on the outside at the same time so that we can see the lag in heat transmission to the outside. We have thought about putting a thermo couple on the actual launcher, and then have the launcher automatically follow a temperature profile to get the rocket filled.
5 жыл бұрын
Thanks for shearing. Keep going.
@Allan_aka_RocKITEman
4 жыл бұрын
*_"I hate it when I get my Schwartz twisted!"_** -- SPACEBALLS [1987]* 😜😜😜😜
@ASTRONAUTICO
5 жыл бұрын
3:32 jajajajajajajaja I did the same a lot in the past!
@grumpyoldstudios
5 жыл бұрын
Does your rocket suffer from ED? (Erector Dysfunction) Call us we can help....
@PaulGreggBYRC
5 жыл бұрын
What an interesting behavior. Are you thinking the bending was independent of pressure? If so, the rocket would bend if you just stick it out in the sun with no water or pressure. Did it? I'm supposing we'll hear your thoughts soon. Was the bending only in the air-filled section, and not in the water-filled section, as far as your could tell? If so, is the water keeping the rocket skin cool? How hot was it? Did it bend towards the shady side of the rocket? Any way to tell the temperature on both sides? Did the rocket bend towards or away from the wind? Was the leeward side a different temperature than the windward? Both sun/shade and windward/leeward might be something to test, with thermocouples or optical thermometers. Are you certain the resin was fully cured? Do you think maybe one side of the rocket casing composite was resin-rich? Maybe the down side during curing? Is seems like I remember you rotating the casing during cure, so that should make it even.... The coefficient of thermal expansion (CTE) for resin is typically way higher than for carbon fibers. I think some carbon fibers actually have negative CTE, while bulk epoxy is relatively high, like 45-65 10-6 m/m/K. Or is it possible the layup was slightly askew on one side of the casing? Or maybe one side of the composite weave had more wrinkles in it? Can you inspect this? Have you calculated PV=nRT to see what temperature rise would be seen for a given pressure rise? It's P1V1/T1 = P2V2/T2, if I'm remembering the gas law right. But wait a minute, isn't P1 = zero? The volume probably goes up a little too..... You could measure the diameter during a pressure test.... Did you happen to track temperature when you did your casing pressure tests? You would have to use air in the test, which would be more dangerous than all water..... Just trying to think of an explanation.
@AirCommandRockets
5 жыл бұрын
All those are very good questions. I address most of them in the explanation video. The bending was definitely the result of pressure, the rockets were out in the sun without any issues beforehand. The pressure chamber was very uniform in terms of wall thickness and no pooling of epoxy on one side. This is why we put it on the rotisserie while the epoxy is curing. The sun definitely played a role in the failure, and the rocket bent away from the sun. We did thermal experiments in a test pressure chamber measuring internal and external temperatures while pressurising. Again this will be in the video. That is one problem with doing hydro tests for pressure containment you are not testing the thermal response at those pressures.
@PaulGreggBYRC
5 жыл бұрын
@@AirCommandRockets I asked a few friends, and they had suggestions. One was to add a few axial carbon tape tows between the woven fabric. Another was to wrap the outside of the rocket with thin aluminum foil. I think this is what NASA does for many spacecraft, for thermal control.
@StanlleyLegion
5 жыл бұрын
Love the horizon joke
@AirCommandRockets
5 жыл бұрын
Thanks Stanley. Good to hear from you. :)
@StanlleyLegion
5 жыл бұрын
@@AirCommandRockets ditto, George! I'm also YouTubing now
@AirCommandRockets
5 жыл бұрын
Subscribed :)
@StanlleyLegion
5 жыл бұрын
@@AirCommandRockets ayy cheers mate
@DoRC
5 жыл бұрын
The mirth is flat.
@arro_rockets
5 жыл бұрын
Gosh, I've been waiting so long for this!!!
@jeremak
5 жыл бұрын
This beg for some experiments with rocket temperature and measuring it with "gun" thermometers. Like "will shading scuba tank help with temperature of air pumped into", or "using water with ice crushed/blended into slush to fill rocket and let it melt during pressurising". But I'm worried that temperature difference in parts of rocket may cause structural problems.
@AirCommandRockets
5 жыл бұрын
A lot of these issues will be covered in the next video, including thermal and other experiments.
@uknowngamer1017
5 жыл бұрын
The red rocket that never could.
@topsecret1837
5 жыл бұрын
HAHAHAHAHAHA.. get it red rocket?
@adaptablerubenvideos3097
5 жыл бұрын
if you actually manage to launch this rocket at full pressure you Will be able to reach easily +700m that is over you personal record so im pretty sure you Will manage a +1000m flight
@AirCommandRockets
5 жыл бұрын
For maximum altitude I think one of the trickiest things is going to be getting the second stage to launch vertically from the booster. Even 10 degrees from vertical you lose significant amount of altitude.
@petedazer3381
3 жыл бұрын
Very cool!
@DeliciousDeBlair
5 жыл бұрын
I would think 1, add fine axially aligned tension lines to counter the bending moment, 2, pre-cool your incoming air as much as possible [put the tank in a bath of ice water for instance] and 3, put up some kind of sun shield. I am guessing that your pressure regulator(s) did not work as planned and that is why it over-pressured? Even if the pressure was forming from a reaction inside the pressure chamber, this pressure SHOULD HAVE stopped any more flow from coming in as soon as the regulators reached their shut-off limiter(s) Also, double, triple or even quadruply redundant regulators is never a bad idea with thin housings like these.
@AirCommandRockets
5 жыл бұрын
The rocket did not over pressurise it reached the correct pressures that we wanted. We do not use a pressure regulator for these rockets. We just have a direct connection to the tank via a small hole and we control the flow of air until we reach the desired pressure. We normally fill it by letting the air in in bursts, let the air cool for a while and then let in another burst of air. We may have just let in longer bursts of air this time or didn't wait enough time between bursts. This is how we control the cooling. We used a similar fill pressurising pattern to one we used with our other rocket that did not bend. There were a couple of other issues that made this rocket bend that will be covered in the next video. Cooling the air prior doesn't help much because the air picks up heat again while it travels through the hoses and manifolds. The air also bubbles up through a column of water. The air still compresses above the water and heats up. We've done experiments with this previously and bubbling the air through water had no effect on lowering the temperature of the compressed air. We had a sun shield over the rocket prior to launch while waiting, but once it was on the pad we removed the sun shield as we wanted to get clear video of the launch.
@DeliciousDeBlair
5 жыл бұрын
@@AirCommandRockets Somehow I must have misunderstood the pressure to have at some point exceeded the target pressure. I fully understand the compression heating issue, I work with both engines and refrigeration systems. Maybe what would be a better way of saying what I meant was to 'encase' the vessel with moisture [perhaps a fine mist on little removable upright rods] which had been chilled. They make pretty cheap plastic evaporative cooler nozzles and use them at outdoor patio lounges in hot areas, the idea being that water evaporates at 555 BUT/lb and that the mid-evaporative spray would be partially cooled as it left the nozzle and misted the tube, but then would further evaporate upon contact with the hot vessel body, this could be driven by compressed air to remove the need for motors or complex electronics and would be able to either fall away or remain standing post launch, and would not interfere with a reasonably decent view of the launch, especially since it would stop spraying the moment you stopped applying air pressure and the fine mist would evaporate off of the vessel walls rapidly in the dry air so as to not leave it coated with excessive and needless physical mas or air drag. By starting with pre-chilled water one would [hopefully] get the maximum benefit of this. Technically, if one used NH4OH [but this is both poisonous and smells terrible] the chilling effect would be far greater, but I fully realize that your goal is not to choke the crowd and it is known that ammonia can travel a long way and still be offensively pungent even when well below toxic concentrations. Generally put, 'ice it down' as it fills, much like how the big rockets vent gaseous hydrogen and oxygen to cool their tanks as they fill, only in this case, rather than put heavy cumbersome ventilation on the rocket its self, make it a stand-off attachment. I suppose one COULD even use compressed air alone, which, while lower in total thermal efficiency, is higher in portability and less messy to handle, just let little tubes of air on those 3 aluminum holder rails vent toward the body where they are allowed to expand in little cones before wafting over the vessel. Any expanding gas drops in temperature, just as any compressed gas raises in temperature, and therefore you could use some of the compressed air for this purpose without adding a whole lot more plumbing. In either case, I eagerly await seeing your actual solution in your next video.
@DeliciousDeBlair
5 жыл бұрын
@@AirCommandRockets By the way, have you tried high temp epoxies?
@ruthdoyle9085
3 жыл бұрын
When are you going to have a drone up there at 10’ above the projected launch height? That would be great footage...
@ReevansElectro
5 жыл бұрын
Now you know why rockets are painted white.
@AirCommandRockets
5 жыл бұрын
Indeed :) In the next video we do a comparison of paint temperatures. The funny thing is that the rocket was originally going to be white, but red looks better in photos. :)
@orbitONhigh
5 жыл бұрын
@@AirCommandRockets I wouldn't think the sun would play that big of roll at least compared to the compression heating of your gas load. Likely getting strong stratification of the gas as well. I've done work with high pressure gas system and I've seen several hundred degree differences between the bottom of a pressure vessel and the top, granted that was with very rapid pressurization. But I wouldn't be surprised if the temperature delta between your water line and the top of your tank was over a hundred degrees that would easily be enough to exceed your glass transition temperature on the epoxy. I don't know how viable it would be imbed a thermocouple between you liner and overwrap but a sensor like that would be enough to abort on too rapid of a gas fill.
@AirCommandRockets
5 жыл бұрын
That's an interesting point about the thermal gradient inside the pressure chamber from bottom to top, I guess that is one thing I hadn't considered. We have done some thermal tests now with a thermocouple on the inside so that we could measure the temperature change from the compression heating. This will be covered in the next video. The heat generated from the Sun was significant in our experiments with this paint colour. Again this will be covered in the next video.
@DeliciousDeBlair
5 жыл бұрын
@@AirCommandRockets With an IR thermal sensing gun one should be able to measure actual external temps in real time along the line of the vessel and record them periodically, even painting little targets on the body at regular intervals to allow finding repeatable distances rapidly.
@orbitONhigh
5 жыл бұрын
@@DeliciousDeBlair Composites are actually very good insulators so there will be a lag in surface temperature as well as a thermal gradient between the inside and outside of the overwrap, This reason i suggest putting the TC under the overwrap. If this was a steady state system this lag wouln't matter and the IR gun would work but compression heating is inherently transient. That being said I don't know their thermal properties of their composite so I don't have an intuitive since of the difference between the inside and outside of their vessel. My experience we used unde wrap sensors and surface sensors and then we able to correlate surface temps to internal, but that only work if you have very consistent manufacturing between pressure vessels. Additionally most IR guns have poor repeatability. While wired sensors are not as convenient they are dramatically more accurate and repeatable.
@kulderij
5 жыл бұрын
Any idea why during flight there is a 1x 90 degree turn? PS: Great T-shirt :-)
@AirCommandRockets
5 жыл бұрын
That is a good question. It may be that the turn happened during the boost phase of the flight.
@RaketfuedrocketsDeutschland
5 жыл бұрын
Very nice video as always! :) That's quite an interesting failure, it reminds me of some of the issues we had with 3D printed parachute systems. Heat is definitely a problem in rocketry anyway. ;) What are you going to do to prevent this kind of problems? We have used a parasol for the rocket last summer. Maybe changing the color of the rocket to white would also help (altough it wouldn't look as good). Do you know the reason why this has never happened before? Good luck and keep it up! Julian
@AirCommandRockets
5 жыл бұрын
Thank you Julian. We've had problems with black 3D printed components in the sun as well. This was one of the reasons why the nosecone is white, and all the deployment mechanism components that were 3D printed are also white. We suspect why this hasn't happened before and we'll cover that in the next video as well. It's funny the rocket was originally going to be white, but we chose red because it looked better in videos. :)
@mircotaraborelli696
5 жыл бұрын
You have been lucky, you involontary create a dangerous situation!
@AirCommandRockets
5 жыл бұрын
This is why you have safety procedures in place. The rocket is located 50m away from anyone while it is under pressure. This is why the launcher has a remote depressurisation function, with a secondary depressurisation back up. This is why the rocket was not launched because there was a problem. This is why the rocket is being launched in open farmland. While this is a dangerous hobby at these pressures, you take steps to minimise the potential for harm to people and property.
@adaptablerubenvideos3097
5 жыл бұрын
hi are you currently fixing the bending problema due to heat
@AirCommandRockets
5 жыл бұрын
Yes, we are well underway with the fix. :) Hope to launch again next month.
@ReevansElectro
4 жыл бұрын
Shouldn't you load it with "rocket water" instead of "plane water"?
@MrYendor1968
5 жыл бұрын
I think I know why your rocket bent, when you made the composite tube, you made it with a back bone. like a fishing rod, at the point where the fiber overlapped, it made a back bone , a point with slightly more fiber adding less stretch, if you do a crosscut you should see the extra layer overlap . even a few extra fibers on one side can cause a back bone.
@AirCommandRockets
5 жыл бұрын
No, the pressure chamber was made with sleeves which are completely circumferentialy symmetric. Here is an explanation of why the rocket bent: kzitem.info/news/bejne/qm2fnnmCfnhkpaQ
@LateNightHacks
5 жыл бұрын
I wonder, would it be worth the effort (and would it bind properly) to finish the last coat of epoxy by wrapping it with aluminium foil, and maybe polish and clear coat for finish. should make for a fancy shiny finish. rollering the foil on also might make interesting diamond patterns.
@e.stgo.7998
4 жыл бұрын
There's an airgun that load 3000 psi in a small carbon fiber bottle. They shoot 50 caliber lead. If you could contact them probably, just saying can imagine to be able to load one of those rockets to 5000 psi????😱😱😱😱😱 It would be awesome!!!!!
@eddjordan2399
5 жыл бұрын
re name it the boomerang?
@websitesthatneedanem
5 жыл бұрын
Global compensation design?!
@admlorenz
4 жыл бұрын
Why not fill the rocket with ice water? You could also attach a shade structure to the launch tower.
@AirCommandRockets
4 жыл бұрын
Ice water wouldn't really help. The air still compresses above the water and heats up. (we've done the experiment)
@ReevansElectro
5 жыл бұрын
Rotisserie style launcher?
@wizzardrincewind9458
2 жыл бұрын
Where comes the heat from? The air in the cuba tank is compressed and at normal temperature. If you decompress it during the filling of the rocket and compress it again at lower pressure, must the rocket not get cold?
@AirCommandRockets
2 жыл бұрын
Here is the full explanation: kzitem.info/news/bejne/qm2fnnmCfnhkpaQ
@godofplumbing
4 жыл бұрын
It happens to the best of us..
@TriPham-xd9wk
3 жыл бұрын
If. Use spring that has compession lenght = sqr of (28×k spring contant) then miracle may happen after it eject at 444 ft altitude or 400 ft
@Datacod
5 жыл бұрын
Nice shirt!
@mej6519
5 жыл бұрын
didnt know you could get brewers droop from just 2 litres of water. ;)
@AirCommandRockets
5 жыл бұрын
:)
@lriques1
5 жыл бұрын
Top!!🔝🔝🔝! Coloca um pequeno sinalizador para mostrar o trajeto do foguete, porque ele some nas alturas!!
@studio4598
4 жыл бұрын
Good
@shrike6259
5 жыл бұрын
would be interesting to know at what heat the epoxy starts to fail.. maybe use a more heat resistant epoxy as opposed to pre launch cooling solutions. nice test tho..
@AirCommandRockets
5 жыл бұрын
This will be covered in the next video. Temperature though is only a part of the problem.
@saukraya3254
4 жыл бұрын
Load the rocket wite ices water to keep temperature down.
@AirCommandRockets
4 жыл бұрын
That doesn't work. We have tried this approach before. The reason it doesn't work is because the air above the water compresses and heats up regardless if it passed through warm or cold water.
@TriPham-xd9wk
3 жыл бұрын
At what pressure and spring strength for ejection to increase speed
@LANgeneral77
5 жыл бұрын
3:45 I guess it was really hot that day SMH
@StanlleyLegion
5 жыл бұрын
What mic do you use for the voice over?
@AirCommandRockets
5 жыл бұрын
Blue Yeti USB Microphone - www.bhphotovideo.com/images/images2500x2500/Blue_YETI_Yeti_Multi_Pattern_USB_Microphone_857749.jpg
@wsbill14224
3 жыл бұрын
Great work. To keep the rocket nice and straight just add a little Viagra to the water.
@godofplumbing
5 жыл бұрын
I choked on a Viagra tablet. Then I had a stiff neck for a week.
@efacel4514
5 жыл бұрын
You can bring it back to the launch site boomerang style
@AirCommandRockets
5 жыл бұрын
It would be very tempting to launch it like that to see what it would do. :)
@adaptablerubenvideos3097
5 жыл бұрын
what is actually you favorite roller coaster
@AirCommandRockets
5 жыл бұрын
Not really into roller coasters.
@evilcanofdrpepper
5 жыл бұрын
If you fill it with some thing heavier than water will it go higher, like if you make a solution saturated with salt will that make the water dense enough that it actually makes a difference in how high it goes? I would think for $10 extra to make it super salty water it would be worth testing out!
@AirCommandRockets
5 жыл бұрын
Not necessarily, here is a video we did on this exact topic including experiments where we compare different liquid densities. kzitem.info/news/bejne/p6tp2H2fiauQZG0
@RandomUser311
5 жыл бұрын
It really just wanted to go orbital.
@AirCommandRockets
5 жыл бұрын
Was very tempted to launch it anyway, but not with a big crowd because you don't know where it is going to go.
@camwakeybeats
5 жыл бұрын
If they played copyrighted music you can put in your own (non copyrighted ) music but some times it will copy right any way cause the things to sense copyrighted music get things wrong
@AirCommandRockets
5 жыл бұрын
For this reason I always use music from the KZitem audio library, rather than other "copyright free" music. I've had an instance where I used free music with full rights to use it commercially and then 5 years later the music rights for this song was bought by another party, and the music was no longer free.
@HoRRoR9099
5 жыл бұрын
Картинка смешная, а ситуация страшная
@TonyLambregts
5 жыл бұрын
First
@nerdrulesu
5 жыл бұрын
something something internet required going limp under pressure comment ...
@starplushtv2185
5 жыл бұрын
Probably loaded too much electronics in the nose cone...
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