125 min (02:05:07) ultra-long flight (#2)
now on one battery pack :)
sorry, closed hardware setup
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125 min (02:05:07) ultra-long flight (#2)
now on one battery pack :)
sorry, closed hardware setup
You need to be a member of diydrones to add comments!
Comments
@vis.asta.. I don't think you are helping you cause by posting photos that have been edited by Photoshop CS4. Add that to the behavior and lack of information and just simple issues with so many aspects of what you have posted and comments that have come out.
Personally I will believe your video when I can take that most expensive motors and batteries even military grade.. take their performance and double it and make the math work even remotely close to 125 minutes. But I simply can't.. so regardless of 'hand made' or not.. which I highly doubt that you can double the performance of the best components available publically... hand made or otherwise.
I think you post on here to get other people providing you with insights to something you probably haven't created... so you can use that to explain it to others.
If you do pull off something like 125 minutes you sure would do more then post what looks like a doctored video and then CS4 edited digital photos. People that do amazing things brag and share insights... not let other people try to explain the seemly impossible.
Could you perhaps tell us approximately how heavy the setup is?
@Simon: MK ??????????? you laugh me :)
also photos:
http://d.asta.cc/_DSC03578.jpg
http://d.asta.cc/_DSC03580.jpg
http://d.asta.cc/_DSC03583.jpg
Simon! don´t think you have read all the posts in this topic! start over! lol
Hey check this out. but i won't tell you how, what, why ??
Posting this on a open source website is sadddd..... what sort of comments did you expect.
1. It's Mikrokopter :-)
2. 25 Volts (6cell Lipo) which means he is using a converter of some kind to run those ESC's.
3. Motors are likely rctiger with a KV of around 240-300.
4.16 - 18 inch props.
5.40,000mah 6 cell to get the long run time......
Simon
Here's a 5C 8000mAh LiPo cell weighing 170g each which is only a little bit heavier than my 5000mAh and capable of 40A current, 29Wh's.
Or how about a 10000mAh 5C at 205g per cell. 615g for 3 cell 10Ah! My 5Ah 3 cell weighs 493g.
Or even a 21000mAh 2C cell at 406g per cell capable of 42A!
And I didn't even look very hard but you can get even lighter/higher capacity cells, so the battery technology is there.
205 Wh/kg seems to about the highest power density that I can find on that site but no doubt there's better somewhere.
I take it back SNAP generator wouldn't work, anything that small would have to be virtually unshielded but then your electronics wouldn't work.
But a methane or hydrogen fuel cell might and while not in common (non-military) use they are feasible.
If you are using Lithium batteries you are certainly building one truly optimized Quadcopter.
In any case I wish you all the luck in the World, the skepticism as in everything else mostly just comes from people who don't think you could do it because they can't figure out how to do it.
At the very least, you challenge us to do better.
I must say, if you are faking it (as many here suspect) you are doing a really good job and ought to be working for a motion picture company at least.
I got cold just watching you, you certainly looked like you had been convincingly sitting there for 2 hours freezing your xxx off.
If this is real, it's so far outside the current box that a little bit of information would go a long way towards convincing the skeptics.
Unless your using a miniature (and very toxic) SNAP generator, current battery technology just doesn't seem to make possible such a long flight.
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