Fully Mechanical Model Rocket Parachute Ejection System Test (No Explosives)
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- Опубликовано: 20 июл 2020
- This is a small test compilation of our PES. The videos are not in the best quality because I used my smartphone to record it. The launches in the following months will be filmed in much better quality!
The PES is still a Prototype and will have a few changes for our first launch. We for sure also plan to improve it every launch!
It currently uses a servo, a few springs and some smart design choices to eject the parachute. No explosives!
Please make sure to visit our website, it has much more information about the rocket and maybe answers some of the questions that you have!
Website: ltmodelrockets.de/
Instagram: / ltmodelrockets 
Наука
Here is another short clip of the mechanics behind the parachute ejection system: instagram.com/p/CD_IAL5qvcU/
That ejection was picture perfect! Love the cone shaped piston! That's a really good idea! It'll help minimize jams
What a great idea! Loved it
Thank you So much
That slow motion shot was awesome
Sort of reminds me of electrons stage separation mechanism, though it still uses explosive bolts iirc
Hey nice Video, can u maybe show how its build exactly ? (Im going to build a big rocket, and need a good PES :-) )
can you show us how you made this
what servo motor do you using?
Nice
more, More, MORRREEEEE! 😱🤣👍✌
nice
How does it know when to trigger?
can we get the dimension of the parachute?
Will see you in air
Nice job! Very inspirational. Now, how would I make something like that without a 3D printer is the question.....
Without a 3d printer thats really hard. Literally 90% of the time over the last 5 months I only did prototyping.
I printed the parts, tested them and If there was a problem I designed it out and simply printed it again.
A 3d printer is the best Investment I ever made :) There really good and cheap ones out there, for under 200€.
Nawww, I am thinking for more of maybe a Pringles can with elastic pulls instead of spring pushers. I am also thinking more of for R/C aircraft use as well. But your design for rocket usage is solid and it gives me good inspiration so, THANKS! Best of luck and my regards, Dave.
@@yz6831Creality Ender 3 Pro
Brilliant! Ive been thinking about this! Everyone uses explosives for parachute deployment! But ive been thinking, surely theres a better way. (surely explosives damage 7 out of 10 parachutes!)
Exactly!
@@LTModelRockets These guys in Australia are building water rockets and have a servo parachute deployment system! I cant quite tell too many details from this video, but at least it works perfectly for them. Air Command Rockets! ruclips.net/video/Ue5pWLryoGE/видео.html
@@LTModelRockets actually theres a glimpse of one here, another water rockets guy. ruclips.net/video/7XMgOTcSzhM/видео.html
@@LTModelRockets you can't use mechanical systems for the really small ones that kids buy, or for the really big ones that some freaks build. The mechanical system is a decent replacement for an ejection charge in mid-power to small high power rockets but since it requires an altimeter that can move a servo instead of just firing off a charge with 1.5 volts, it probably requires a big battery. There's also a lack of easy, pre-designed mechanical ejection systems. Your mechanism is ingenious, but like you said under another comment, it requires lots and lots of testing. You could probably sell your mechanism online if you could confidently mass produce it though.
please give 3d model
can you please tell me how you are powering a 3.3v board with a 9v battery?
In hindsight Im clueless as well. I dont remember my decision making to be honest and why it worked. But later we used Voltage converters to 5V :)
Das System ist echt cool geworden. :) Aber wie bleiben die Federn gespannt wenn man sie runterdrückt?
Das ist schwer in Worten zu erklären, aber ich Versuche es mal. Scrolle bei dem folgenden Link mal runter bis zu der Skizze mit dem Titel "Parachute Ejection System V1.1" ltmodelrockets.de/pages/roadmap
Das kannst du vielleicht zur veranschaulichung nehmen, allerdings ist die Skizze an ein paar stellen bereits leicht Verändert und es fehlen Dinge, wie Federn, der Fallschirmbehälter und ein paar Schrauben, sowie der Servo.
Jedenfalls ist ganz unten ein Haken, welcher den Teil, wo der Fallschirm drin ist festhält, wenn dieser runtergedrückt wird. Mit einer Feder ist der Haken immer so auf Spannung, dass der Fallschirmbehälter nicht "ausversehen" wieder hochrutscht. Erst wenn bei einem Servo ein Signal ausgelöst wird, bewegt sich der Servo so, dass sich auch der Haken zur seite bewegt und der Fallschirm rausgeschleidert wird.
Das ist echt schwer so zu erklären, allerdings mache ich morgen oder übermorgen mal ein kurzes Video dazu und lade das dann auf Instagram hoch.
Hier der Link zu unserem Insta: instagram.com/ltmodelrockets/
When is liftoff?
In one week is static fire and in two weeks liftoff (hopefully).
EDIT:
Current Target for Static Fire #2 is 07.08
Current Target for Launch #1 is: EDIT Again: Unknown :(