Water Rocket Parachute Deployment Mechanism

This tutorial shows you how to build a side deploy mechanism for a water rocket. For full step by step details visit us at:
www.AirCommandRockets.com/cons...
Timers are available for sale here:
www.aircommandrockets.com/serv...

[@dc54321x]

Use the left side of the ping pong ball if you're in the Southern hemisphere, and use the right side if you're in the Northern hemisphere

[@stettan1754]

This is awesome! Major respect for engineers!

[@gk123434534]

Thank you Stet. :)

[@nakibeso1]

この動画を参考に、自分の水ロケットの2段目にパラシュートをつけることができました。 どうもありがとうございました。

[@gk123434534]

@Basrockets Thanks :) It really only takes 1-1.5 hours to make from scratch. Using the contact glue allows you to keep working as it bonds quickly.

[@gk123434534]

Hi Jamie, Good question. We put a couple of pieces of tape going from the lower coriflute circle over the bottom edge of the parachute hole and tape it to the outside of the nosecone cover. That way you can easily remove the tape and slide the mechanism out. The position of the servo can be either vertical or horizontal. Horizontal gives you more room for other things like altimeters or batteries under the servo.

[@onafnno1]

I really like the editing of this video. Cut out all the dead space, just show important parts.

[@thebeanus009]

Might I ask which is the left side of a ping pong ball? No, I'm kidding of course. Your rockets and parachute set up are amazing! Fantastic work.

[@gk123434534]

@MrTomcarnahan Epoxy won't hold all that well to the Corriflute as it is made from polypropylene. We find contact adhesive works quite well for bonding. If you want to use epoxy, I suggest making lots of small holes on the sides of the corriflute to be bonded. This way the epoxy will be able to grab a hold of the surfaces.

[@gk123434534]

For simpler deployment mechanisms search for "Tomy Timer deployment mechanism" These are relatively simple to build, inexpensive and quite reliable. They have been used for many years.

[@gk123434534]

@MrTomcarnahan Thanks Tom :) We use 5mm Corriflute for both the deployment mechanism as well as fins. We find that the 3mm stuff we have access to just isn't very strong and tends to warp.

[@MrJakeFehr]

I like that set-up I think I will build one to for high pressure rockets.

[@spazzmonster]

Absolutely awesome work.

[@wyz2285]

really nice tutorial! love it :D

[@Wizkid490]

Very nicely done. This is why you guys are the rocket engineers. :) I think I will try a similar design (will probably adjust the spacing a little) using the guts of a cheap R/C toy to remotely trigger the chute.

[@georgekatz6416]

Should work fine. A number of rocketeers use this technique to remotely deploy a parachute. Make sure that your transmitter/receiver has the range to deploy the parachute at apogee, rather than when it gets closer to Earth. High speed parachute deploys can result in shredded chutes or snapped shock cords.

[@Wizkid490]

Yeah, that is a concern of mine. I actually have a full-fledged RC transmitter/reciever/servo set that I got as a gift, but if I can do it with a cheap toy that costs a lot less, I will. Can you link to any videos of a similar setup? I have been looking on youtube but have not found any that I could spot.

[@gk123434534]

Sounds great! That should be able to fit in some narrow rockets. Will you be uploading a video of it in use?

[@ettorediblasio7241]

Nice video edition!

[@gk123434534]

It comes under a few different names: Polyflute, Coroplast, IntePro, Proplex, Correx, Twinplast, Corriflute or Corflute. It's all corrugated plastic used by the sign industry. It comes in different sizes.

[@gk123434534]

The timer can work in two modes. 1) purely as a timer - it will activate a servo after a set period of time after it detects launch. This is independent of the what the rocket is actually doing. We use a simulator to work out how many seconds are expected for a flight and set it to that. 2) The timer can accept an external input from an altimeter or magnetic apogee detector to activate the servo when a rocket reaches apogee.

[@gk123434534]

Hi, 1) Look for a "Tomy Timer" these are mechanical clockwork mechanisms that are inexpensive, light weight and easy to use. You can use these instead of an electronic timer. 2) No exact dimensions, you need to make it fit into your size bottles. Exact dimensions are not critical. 3) Try this on KZbin: Ip0SlVY3OTk 4) Please see tutorials on our main website. Happy to answer specific questions.

[@gk123434534]

@fatpeople249er Hi Walker, yes you can use a standard servo motor from an RC car. We use 9g RC servo motors for our deployment mechanisms.

[@wyz2285]

really nice tutorial! love it :D but won´t a tomy timer be a lighter and cheaper solution to the servo and the time chip?

[@Nuttyfutty96]

This was as blunt as the ping pong ball he used, but very cool

[@MrTomcarnahan]

Great video and instructions on your web, George! Another first-rate production. Question: what thickness Corriflute sheet did you use? For the deployment module? For your fins? Thanks as always! -- Tom

[@ReptiglorandRockets]

Hee hee. :) The right side will generate a inverse vortex and cause the rocket to fly backwards. Good one George. :)

[@rmholbert]

This is simply amazing

[@JamieBignell]

It works- thanks so much!! It works!!

[@julianmetallica161]

sir your rocket is great this mechanism is controlled for RC?

[@daftrucktwaalf3639]

where you can buy or get that servo and the elektronic

[@fatpeople249er]

Hi gorge this is walker do u think u can use a servo from a rc car for the servo and for the parachute mechanism

[@wyz2285]

@gk123434534 so did you make the timer chip or you bought it some where?

[@gk123434534]

@wyz2285 We make the Servo Timer II (shown here) ourselves. But the design will work with other servo controlling timers or RC servo remote controls.

[@Creil15020]

Thank you for the answer! :)

[@gk123434534]

@TheScienceguy1998 We make the timers ourselves, and the servo motors we buy on ebay for a few dollars each.

[@traintalkers]

I saw your website lead a new recovery system called the titleMAX and I looked it up and couldn't find them. I was wondering if they haven't started selling them or if you know the name of the website they sell it at please share

[@gk123434534]

You can contact them through their facebook page on availability.

[@MrBetoRodriguez]

Buddy. I have a question. What is the name of the white material in the 11 second? Thanks a lot!

[@daftrucktwaalf3639]

where you can get the servo timer 2?

[@gk123434534]

@wyz2285 Indeed a Tomy timer can be used with this mechanism, and would result in a lighter and cheaper solution. The timer and servo has certain advantages over a Tomy timer though such as a built in launch detect and accurate timing. It can also be connected to a other sensors that detect apogee like the uMAD we fly with the timer.

[@thermosinthesis]

Thanks!!!!!!! I gotta tell my aerospace teacher!!

[@wiilliiamparker5216]

thanks it was realy helpful

[@bobilol24]

i make water rocket but i don't want to spend a lot on it so do you have some mechanic water rocket deployement parachute?

[@traintalkers]

Can you just use a servo timer and motor or do you need the uMAD with those for the parachute to come out?

[@gk123434534]

Yes, just the servo timer and a servo are needed. The timer activates the servo motor after a set period of time after launch. The uMAD can be used in conjunction with the timer to detect when the rocket tips over.

[@gk123434534]

We have construction details on our main website. To measure altitude you can buy an altimeter such as the AltimeterOne that will give you a readout of the peak altitude.

[@JamieBignell]

By the way 2 questions: Firstly, how do you stop the elastic band turning the whole mechanism inside the bottle because surely when you hook the band on the servo, it would pull the mechanism round? Secondly is there an particular reason why you position your servo lengthways?? many thanks!!

[@daftrucktwaalf3639]

where you can get the servo timer 2

[@vipinsingh5900]

Best rocket ever

[@korvanon8832]

Hi, I'm working on a solid fuel rocket using custom motors. My motors are not equipped with the necessary black powder charges for parachute ejection. Would this system work as an alternative?

[@gk123434534]

Sure, you would have to work out the approximate time to apogee to open the parachute at the best time. You could get something like a stratologger and use it's ejection charge firing capability to electronically fire your ejection charge at apogee.

[@diyowl5496]

How you get the servo timer and servo motor

[@TheScienceguy1998]

Where did you get the server and the timer?

[@zachhorner644]

please tell me where i can get the electronic peices for this

[@danydansen131]

Very interesting. Can you please, explain the timer a little further?. Because i wondering, if there is some kind of pre-programmed calculation, where range and speed of the rocket engine determined the time of the parachute, or am i wrong, or is it Manual or automatic radio triggered . Need it for my school project ,Hope to hear from you :)

[@traintalkers]

would you need a servo timer or could you just use a servo motor and a uMAD?

[@gk123434534]

The uMAD cannot drive an RC servo motor directly. It can fire pyro ejection charges directly. The servo timer can take be triggered by the uMAD ejection output and produces the correct PWM signal for the servo motor.

[@Creil15020]

Can you Tell me where can i buy a Timer and the Other Electric pieces? And how much does it costs?

[@gk123434534]

@bobilol24 You should be able to use a Tomy timer instead of the servo with this design.

[@ethanstorey4429]

Where can I buy servo timers

[@MotoMendez]

thank you btw you got +1 subscribe

[@calebbautista7243]

Just a question: Why do you have two different channels, are they the same content?

[@AirCommandRockets]

This channel started off as a general channel for various things, and the other was for water rockets specifically. We don't upload new water rocket videos to this channel anymore, but keep the old videos here.

[@FLIGHTSIM01124]

@gk123434534 Hi George, where do i can find a flight computer and a servo motor like the one you use

[@1231robotman]

can you show us how to make a launcher and measure altitude for the rocket?

[@ethanstorey4429]

Where can I buy servo timer

[@3dannsiki]

As a device to open the parachute, or would not be too heavy. My parachute deployment device does not use a servo motor and an electronic circuit. The early days of development, open a hole in the nose cone, was blown off in the pressure in the nose cone. Because only a hole in the nose cone, the weight of the device there is no parachute deployment.

[@gk123434534]

There is a link in the video description.

[@songbirdband]

Respect.

[@charliethomlinson944]

Where can you get a servo

[@tomino3093]

:o very nice sir

[@traintalkers]

Do you know what month the servo timers might come in to stock again

[@gk123434534]

Sorry, not at this stage. I can notify you if you like when it does become available.

[@randomdude79404]

Please Reply Hi Im thinking of making one but I have a few questions , 1) First of all where can I find the timing mechanism for parachute 2) Do you have the exact dimensions for the stuff in this video such as the diameter of the round circle you cut. 3) It may sound like a stupid question but where exactly does the water go , I tried looking for a video on your website but I got confused 4) Do you have a full video showing how to build the launcher for the rocket

[@Y13A]

Is it possible to create a rocket that still functions without using servos or electronics? I have a school project and am limited to the materials that we can use. Basically, we can't use electronics. Any ideas?

[@gk123434534]

***** Yes, it is not only possible it is also very common to make good deployment mechanisms without any electronics. Look up "Tomy Timer Deployment". There are many tutorials available on how to make them. They are also very cheap and lightweight. If you are after other options you may want to have a look here: www.aircommandrockets.com/recovery_guide.htm

[@Y13A]

Thanks for the link!

[@frandibiase8771]

I meant the circuit board connected to the servo motor

[@FLIGHTSIM01124]

@gk123434534 thanks george also can you send me all the names of the things a i need to build it becaus i dont know if a can get´em in my city because im from Mexico and i nedd to see where i can find them

[@traintalkers]

Will you guys sell servo timers again?

[@gk123434534]

Most likely yes, but at this stage probably not until sometime next year.

[@gk123434534]

@FLIGHTSIM01124 We don't have any more of these left for sale. If you would like to build your own, I can send you the full details, source code, compiled hex file as well the PCB layout. The RC servo motors we buy on e-bay for a few dollars each.

[@gk123434534]

No, the mechanism is self contained. The rocket detects launch and after a set time activates the RC servo motor to open the parachute door.

[@rikgomez]

Hello Can you give me the reference of the electronic board to control the servo? Please A hug Rik

[@gk123434534]

Hi Rik, In the comment description for the video is a link to the Servo Timer II boards that we use for the timer. However, you can use any other kind of timer in this mechanism even something like a mechanical Tomy Timer will work. These are the clock work mechanism found in the little plastic walking wind-up toys.

[@HomeRoboticsAustralia]

freakin smart

[@gk123434534]

I've added a link to the timer page in the video description above (click on "show more"). You can buy the timers from there. You will need to supply your own RC servo motor and battery. We buy the servos on e-bay for around $5 each.

[@gk123434534]

I'm pretty sure the right side will generate an inverse vortex and the rocket will fly backwards. :)

[@miguela.rodriguiez1003]

Hi Where can I buy the electronic card to control the servo? Thanks

[@iljsg3390]

Use Arduino

[@Basrockets]

@gk123434534 Very nice , i'm still working on my big 8,1 Liter water rocket (high pressure) and he is almost done ! and that i go launch it, i can't wait to do that. Cheers Bastiaan

[@alexshi8583]

Would this work if i used a arduino to control the servo?

[@gk123434534]

Hi Alex, Yes totally you can use any kind of controller for the servo. Even an RC remote will work fine.

[@BrunoAlmeidaK1]

Gostei posta mais.

[@gk123434534]

If you look at pretty much any of our other videos you will see it being used.

[@TonyProano]

I used the right side of the ping-pong ball, will it still work?

[@salmaaslam6244]

hey...... wil u plzzzz can say what all the things have u used...... in a list plzzzzzzzz........

[@gk123434534]

www.aircommandrockets.com/construction_7.htm

[@salmaaslam6244]

Tq u dear......😊😊 any dought may i ask u ry8....

[@frandibiase8771]

Excuse me could you tell me where I can buy the card hello lory

[@gk123434534]

Fran Di Biase Hi, I am not sure which component you are referring to. Do you mean the white corrugated plastic? (corriflute)

[@justitas3392]

+Fran Di Biase corrugated plastic cardboard. any stationery shop will do.

[@traintalkers]

Does the servo timer detect the launch?

[@gk123434534]

Yes, it has an acceleration switch that is used to detect the launch. When the rocket achieves above 2G for more than ~1/4 second launch is detected.

[@roehle9962]

do you think a Arduino will survive a parachute failure?

[@gk123434534]

+Hakenhand Röhle If it is well padded, then it should. We have had multiple failures and usually the electronics survives if it is protected. See if you can locate it further down on the rocket.

[@roehle9962]

Thanks :D

[@delmyortiz5623]

excuse me, what could we use to replace the servo timer ll?

[@gk123434534]

You can use a "Tomy Timer" these are mechanical clockwork mechanisms taken out of small walking toys.

[@nanotechx]

Hi gk123434534, i am living in Pakistan i tried to find it everywhere but i could not find it. Can you please advice some alternate for this? or can you please suggest me how can i get this PL premium polyurethane construction adhesive in Pakistan?

[@nanotechx]

I can purchase sikaflex 11 fc because we have outlets for SIKA but PL premium polyurethane construction adhesive i could not find anywhere please help me.

[@AirCommandRockets]

Unfortunately Sikaflex 11FC is not suitable for splicing, for use it bursts at around 50psi. You could try alternate polyurethane wood glues. Some of these may work. Without knowing what glues are available in Pakistan it is hard to recommend something. I would look at the PU glues that you can source and then do a few test splices to see which ones hold the most. Make sure you allow at least 3 days to cure the splice before testing.

[@nanotechx]

Thank you for your help ! i will try to arrange and i will let you know.

[@calderbmx1838]

What were those bottles from?

[@AirCommandRockets]

There a few years old now. They were just from lemonade.

[@3dannsiki]

正確に最高高度を検出し、ノーズフェアリングを分離する装置が、たった２ｇの部品で出来てしまいました。　　　　　　　　　　　　　　　　　　　　　　　A device that accurately detects the maximum altitude, separating the nose fairing, I was able to only parts of 2g.　　　　　　　

[@bman_2024]

but will the 9v burn out the servo?

[@AirCommandRockets]

No the timer has a 5V regulator on it that supplies 5V to the servo.

[@HowToArtillery]

That is ver smart

[@MotoMendez]

do a video with if working (launch it )

[@gk123434534]

We buy our servos on e-bay for around $5 each.

[@megalasercat]

most complex water rocket ever

[@kwaynem83]

How do I decifer the left side of a ping pong ball?

[@gk123434534]

In this particular setup a stepper motor will not work with this timer. Of course you could create a timer that does drive a stepper motor.

[@antoniozacarias91]

Man I wanted to see it fly

[@Basrockets]

Looks like it is not mutch work ! Very nice system

[@iljsg3390]

7 years ago....