We are now live at www.skycat.pro. The development project continues, and updates are added to this blog in random intervals.
We have parachutes launchers available in many weight ranges; optimal 1 - 6 kg and these could be extended with higher impact level up to 11 kg. For larger up to 23 kg multicopters we have XL - series with pilot chute principle.
For those who wants to digest all information available of products, we have left this blog as it is. This blog follows closely main steps we have gone through while developing parachute launcher. Blog might feel like Do It Yourself kind and to be honest, in the beginning it was.
After hundreds of hours thinking, designing, prototyping and testing our patent pending launcher turned to be the most reliable parachute launcher for professional use. We have searched all possible boundaries of technology and from this blog you'll find results of these successful tests but also not so successful tests.
You never know where The final limit of technology is without experiencing it. That's the reason why we have done tests for scenarios which might not be even realistic on flight.
For production versions of Skycat we could proudly to say that we have experienced zero mishaps, never failed a single eject and parachute has deployed every time. This includes rescue scenarios with every imaginable scenario copter could face in air. Check this out as one sample of our test sessions!
Skycat parachute launcher has been tested beyond all imaginable abuses copter possibly could experience in flight. We have sink it to water, it has been heated hours to 90°C and exposed to extensive moisture, we have frosted, defrosted and frosted it again, it has been in mud and snow and still it has worked. Same overshooting tests we have done also for electronics. This is not promise you can use our products outside of submarine but we have tested it so :)
Fly safe - Let's keep our copters flying!
DJI Inspire 1 / Skycat X55-CF parachute integration by www.remotevision.ch:
Other documentary videos:
Manufacturers contributed to this project:
Here is video which demonstrates 6m2 (2.8m in diameter) parachute tube triggering. Next tube size to be done is for 1.8m2 parachute. It is planned to be installed on multicopter and tested in air.
Here are two links, one embedded and one direct link. For some reason embedded video was visible only with Opera Next I used for making it and IE/Chrome shows only embedding code.
That thing really blasts out of the tube doesn't it? Looks very good.
New test update:
This time I tested different about double force spring for large parachute tube. Large 6m2 parachute seems to require a lot of power for making sure it really flies out. All heavier objects I shot flies meters with that force as you can see in video where ice hockey puck takes some air. This time spring force was about 240N.
Looking very powerful. Is it the friction on the insides of the tube that's making the parachute slower or is it just wind resistance plus it's not a solid object so it can absorb a lot of the force from the spring before it actually has to move?
Like trying to kick a pillow, it's just not going to go as far as a soccer ball.
I guess greasing the tube or adding baby power to reduce friction won't help then.
I've tried PTFE (Teflon) coating spray inside the tube which wasn't too bad.
I am using transparent PVC pipes for the moment.
On the code side we've made one small step towards supporting the parachute which is to make control_roll, control_pitch and control_yaw always hold the desired roll, pitch and yaw angles. So the next step will be to compare those to the actual angles at some reasonable interval (like 20hz or 50hz) and recognise when things have gone badly. That work won't take long so when the hardware mechanism is ready we can whip that out fairly quickly.
That's good news.
Hardware is in process and something new might happen at this weekend. Yesterday I made new tube for 1.8m2 parachute but unfortunately it was too small and chute would have needed too much force to push out. I'll try to print few millimeters bigger today.
And new frame where parachute is integrated waits time for assembly.