Parachute Deployment
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Re: Parachute Deployment
Today the gravty deployment experimental rocket rammed the ground so i have to rebuild it ,again. errrrrrrr!
Ascender Water Rockets
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Re: Parachute Deployment
Ouch. How exactly does the deployment system work?
Water Rockets are amazing things, One second there sitting on the launch pad, the next, splattered all over your shirt.
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Re: Parachute Deployment
I agree with adjusting the hole sizes. You'd better be prepared to have lots of nose cones due to the experimentation you would need to do. you should launch the rocket once to get a sense of the time of apogee. That will help you figure out the best delay time and thus the best hole size.
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Re: Parachute Deployment
the rocket failed to deploy again but lukily only one thing broke.
i'll try to post a picture.Alex wrote:Ouch. How exactly does the deployment system work?
Ascender Water Rockets
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
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Re: Parachute Deployment
I'm not sure if my deployment system concept would actually work so i'm making a rocket to test how my mechanisim is affected during flight. Because i just had a perfect flight but it didn't deploy and really rammed the ground. if it was going to deploy it would be then.
Ascender Water Rockets
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
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Re: Parachute Deployment
Why don't you try to take video of it in flight and post it here so we can analyze it. Maybe we can figure out what is happening with your deploy.Brian wrote:I'm not sure if my deployment system concept would actually work so i'm making a rocket to test how my mechanisim is affected during flight. Because i just had a perfect flight but it didn't deploy and really rammed the ground. if it was going to deploy it would be then.
The Cloud Dancers
Floating amongst the clouds
Floating amongst the clouds
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Re: Parachute Deployment
[youtube][/youtube]Cloud Dancers wrote:Why don't you try to take video of it in flight and post it here so we can analyze it. Maybe we can figure out what is happening with your deploy.Brian wrote:I'm not sure if my deployment system concept would actually work so i'm making a rocket to test how my mechanisim is affected during flight. Because i just had a perfect flight but it didn't deploy and really rammed the ground. if it was going to deploy it would be then.
Ascender Water Rockets
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
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Re: Parachute Deployment
[youtube][/youtube]
just working it out
just working it out
Ascender Water Rockets
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
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Re: Parachute Deployment
Let me bring in my two cents to this thread.
Now I've been checking out the air command team flight computers, and well frankly I don't think it has to be so complicated.
I decided to try to "improve and simplify" them a bit, and came up with this solution:
Instead of timing the deployment, why not use a simple mercury switch, like this one: http://upload.wikimedia.org/wikipedia/c ... switch.jpg.
The programming should be simple enough too, just program the chip to watch the port the switch is triggered, and when it is triggered send a couple of pulses to the servo to go full out on one direction (like the aircommand solution, pulling a pin out of a hole, or so), and then a new set of pulses for the servo to return to its initial position.
In case I didn't yet explain it well enough, you put the mercury switch in an upside-down position, when the rocket reaches its apogee and is presumably not tailsurfing down, the mercury switch is triggered and releases the chute. The trajectory does not even have to be shooting straight up.
I'll probably post more about this once i get my avr chip flasher cable done, should be in the near future.
Now I've been checking out the air command team flight computers, and well frankly I don't think it has to be so complicated.
I decided to try to "improve and simplify" them a bit, and came up with this solution:
Instead of timing the deployment, why not use a simple mercury switch, like this one: http://upload.wikimedia.org/wikipedia/c ... switch.jpg.
The programming should be simple enough too, just program the chip to watch the port the switch is triggered, and when it is triggered send a couple of pulses to the servo to go full out on one direction (like the aircommand solution, pulling a pin out of a hole, or so), and then a new set of pulses for the servo to return to its initial position.
In case I didn't yet explain it well enough, you put the mercury switch in an upside-down position, when the rocket reaches its apogee and is presumably not tailsurfing down, the mercury switch is triggered and releases the chute. The trajectory does not even have to be shooting straight up.
I'll probably post more about this once i get my avr chip flasher cable done, should be in the near future.
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Re: Parachute Deployment
Sorry, I couldn't find an edit function for my post, so I'll have to do a slight correction, the above should stand:vsync wrote:program the chip to watch the port the switch is triggered
"program the chip to watch the port the switch is connected to"
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Re: Parachute Deployment
The mercury switch would almost certainly be triggered apon burnout.vsync wrote:Let me bring in my two cents to this thread.
Now I've been checking out the air command team flight computers, and well frankly I don't think it has to be so complicated.
I decided to try to "improve and simplify" them a bit, and came up with this solution:
Instead of timing the deployment, why not use a simple mercury switch, like this one: http://upload.wikimedia.org/wikipedia/c ... switch.jpg.
The programming should be simple enough too, just program the chip to watch the port the switch is triggered, and when it is triggered send a couple of pulses to the servo to go full out on one direction (like the aircommand solution, pulling a pin out of a hole, or so), and then a new set of pulses for the servo to return to its initial position.
In case I didn't yet explain it well enough, you put the mercury switch in an upside-down position, when the rocket reaches its apogee and is presumably not tailsurfing down, the mercury switch is triggered and releases the chute. The trajectory does not even have to be shooting straight up.
I'll probably post more about this once i get my avr chip flasher cable done, should be in the near future.
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Re: Parachute Deployment
vsync wrote:Let me bring in my two cents to this thread.
Now I've been checking out the air command team flight computers, and well frankly I don't think it has to be so complicated.
I decided to try to "improve and simplify" them a bit, and came up with this solution:
Instead of timing the deployment, why not use a simple mercury switch, like this one: http://upload.wikimedia.org/wikipedia/c ... switch.jpg.
The programming should be simple enough too, just program the chip to watch the port the switch is triggered, and when it is triggered send a couple of pulses to the servo to go full out on one direction (like the aircommand solution, pulling a pin out of a hole, or so), and then a new set of pulses for the servo to return to its initial position.
In case I didn't yet explain it well enough, you put the mercury switch in an upside-down position, when the rocket reaches its apogee and is presumably not tailsurfing down, the mercury switch is triggered and releases the chute. The trajectory does not even have to be shooting straight up.
I'll probably post more about this once i get my avr chip flasher cable done, should be in the near future.
It's a good idea but the people who tried this before found out that the mercury switch would trigger because the rocket slows down as soon at it rtuns out of water and the negative g force made the switch trip. Attempts to work around this never were reliable because moments after apogee the rocket is in free fall and that is effectively "zero gravity" to the rocket and the switch may never trigger while falling.
I like the idea and wish there were a way to make it reliable.
Tim Chen
Captain, Team Enterprise
Captain, Team Enterprise
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Re: Parachute Deployment
Hi,
What is the more reliable parachute opening system?
I think about timer or inertial trigger ?
Luc
What is the more reliable parachute opening system?
I think about timer or inertial trigger ?
Luc
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Re: Parachute Deployment
i finaly got a parachute deployment with my tomy timer relise so now i can finaly test my gravity deployment system without crashing it every time. my tomy timer is relised by a weight falling down from the high acceleration of the water rocket. heres some pictures
Ascender Water Rockets
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
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Re: Parachute Deployment
heres some videos
[youtube][/youtube]
[youtube][/youtube]
[youtube][/youtube]
[youtube][/youtube]
Ascender Water Rockets
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w
http://ascenderwaterrockets.weebly.com/
https://www.youtube.com/channel/UCS2NHXS-VFxEux70DCINR0w