The Flying Hexacopter UAV drone to 1 passenger and less than 10 000 €! DIY!

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The Flying Hexacopter UAV drone to 1 passenger and less than 10 000 €! DIY!




by Christophe » 22/01/18, 18:13

And no need to have millions to develop a single-seat electric drone, 6 engines, 6 propellers, a rudimentary chassis, a battery of a few kWh ... and a good pair of balls and it's gone :)



It is, of course, 100% forbidden ...
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Re: The hexacopter flying bath drone




by Christophe » 22/01/18, 19:20

ps: given my aeronautical experience of the moment, I would have left on propellers a bit bigger anyway ... and can be 2 more?
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Re: The hexacopter flying bath drone




by chatelot16 » 22/01/18, 22:20

I can not believe that this video is true without special effects

I would not be surprised if it was an ultra light model ... and a video traffic to paste the image of the pilot when we see him move

the center of gravity of the pilot is not even in the middle! all its weight is on the rear propellers

youtube or other videos are a serious pollution ... we can not know what is true or false ... so we get smeared error ... and the error it sticks ... we can not anymore to get rid of it when it is coated
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Re: The hexacopter flying bath drone




by Christophe » 23/01/18, 11:16

No matter the center of gravity it's not a plane, it's a hexacopter!

It is not possible this tendency to bitch systematically and be psychologically blocked and especially to see dishonesty everywhere! izentrop just had a similar reaction: Biofuels / test-the-European-comburateur-2018-doping al-water-kit-Gillier-etc-t15521.html # p332796

It becomes frankly heavywill not be surprised that France is blocked from all sides and lacks initiatives with such mentalities (shit !!!!! sorry to say it and do not take it for you but that's the reality! do not worry I was like that too ... but I'm healing !!)

The video is authenticI'm almost sure because I'm on an aeronautical project for a little more than 1 year and during this project, I had thought of something like this (without the bath lol).

I have a drone for over 1 year and I can tell you that flight controllers can work miracles on stability! Mine has already flown by winds gusting delta +/- 20 km / h without almost flinching!

That of the flying bathtub is taken from a DJI Phantom 4, just adapted to 6 engines (the flight controller phantom can control up to 8 engines: they use the same for their quadri, hexa and octo ...) so you see I know the subject!

By cons I do not guarantee the autonomy of the bazaar: between 5 and 10 minutes I guess! So I guarantee, almost knock on, that the machine exists and can carry a man but not that he went to actually do his shopping (unless the bakery is less than 1 km from home kind ...)

During my tests I determined a very important figure: the thrust in N / kWe ...if we are at 100 N / kWe we can have good results! This means that this drone, assuming that it carries 100 kg, consumes about 10 kW on 6 engines, that makes the 2 kW engine ... and a battery of 1kWh will give 6 min of autonomy, 12 minute for 2 kWh ... etc etc ... It is quite playable but if the driver is 65 kg is better than 85 : Cheesy: !

It's not based on pure theory (but you can always redo the calculations) but on the theory AND on the manufacture of a test bench and measurement campaigns that stick with the theoretical calculations! So it's that I'm in the right!

ps: ok by cons for the general remark on some videos youtube ... it sucks but it's part of the human: you do not hesitate to moan, others to cheat ...
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Re: The hexacopter flying bath drone




by chatelot16 » 23/01/18, 13:37

I do not laugh ... I express a doubt, it's still not exactly the same thing

the power necessary to fly with a propeller is not only proportional to the weight, the power of much of the diameter of the propeller, the larger the propeller, the lower the power

so when you have too small a helix diameter, you have to increase the power, and increase the battery weight, which ends up in an impossible viscous circle.

even the real helicopters that have power more easily than electric seems to me to have a proportionally larger propeller than this bathtub

but I'm only expressing my doubt ... I'm not complaining ... I'm not saying it's wrong

you have more experience than me in drones, but since you give a figure in N / kW precise for which load and what diameter by rotor

the placement of the pilot in the right place is important to use the lift of all the rotor ... if the pilot is misplaced all the work will be done by some rotor and it will consume even more power than if the load had been well distributed

also this bad distribution is not proof that it does not work but maintain my doubt
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Re: The hexacopter flying bath drone




by Christophe » 23/01/18, 14:17

It's ok I accept this mea culpa since you seem still to know you in propulsion : Cheesy:

It is not so much the diameter of the propeller as the total swept surface not the propellers which counts to obtain a good yield! Short it is better 2 smaller propellers that sweep a larger area than a large propeller whose swept surface is smaller ...

100 N / kWe in my case it is, of memory for 1.3 m ² swept and a thrust of 200 N approximately ... to check I have not the measures under the hand there ... there are plenty of forms on the internet who will give you theoretical estimates (not far from reality) ...
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Re: The hexacopter flying bath drone




by Gaston » 23/01/18, 14:24

chatelot16 wrote:the placement of the pilot in the right place is important to use the lift of all the rotor ... if the pilot is misplaced all the work will be done by some rotor and it will consume even more power than if the load had been well distributed
For the hover, you're right.

I wonder at the pictures if the distribution is so bad that it for the flight forward.
Indeed, we see the gear lean sensitively forward, which, I think, allows to standardize the lift of each rotor.
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Re: The hexacopter flying bath drone




by Christophe » 23/01/18, 14:51

I think the apparent imbalance is offset by a placement BEFORE the batteries simply ... and in the end it is not so badly balanced!

To balance an aircraft (static, engine stopped), just ... a good portico!

Not sure that on a multi-rotor a centered center of gravity is the best, I think that an X / Y distribution forward with X> Y is better since we want to move forward with it!

I have never considered the question, given the number of drone enthusiasts, it will be easy to find the answer! I'll ask my friend drone specialist!
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Re: The hexacopter flying bath drone




by chatelot16 » 23/01/18, 17:41

200N for 1.3m2, I want it, it seems more reasonable than the bathtub

200Newton = 20 kg

if the tub with its driver is 80 kg it must 5,2m2 rotor to be the same power by Newton as your example ... and obviously the total rotor area of ​​this bathtub is much smaller ... so the power essential to fly it will be much stronger

so when I see it my pifometer tells me that it is a styrofoam mannequin ... of course everyone knows that the bathtub is not cast iron but plastic as thin as possible
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Re: The hexacopter flying bath drone




by Christophe » 24/01/18, 02:34

chatelot16 wrote:if the tub with its driver is 80 kg it must 5,2m2 rotor to be the same power by Newton as your example ... and obviously the total rotor area of ​​this bathtub is much smaller ... so the power essential to fly it will be much stronger


I have to repeat my figures ...

I think the surface is about 3m² ... so the yield to have 1000N should be between 50 and 80 N / kWe ... depending on the actual thrust needed and the actual surfaces, not easy to say just on a video!

chatelot16 wrote:so when I see it my pifometer tells me that it is a styrofoam mannequin ... of course everyone knows that the bathtub is not cast iron but plastic as thin as possible


It moves really well the manequin ... look at these 2 other videos:



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