I want to share our last experience with HYBRiX, a lapse time of a 3hr and 10min endurance flight test. As far as I know it is the longest flight time for a hybrid fuel-electric drone, and I have to say it is not a lab test, but the same configuration we will start selling very soon. We are really excited about this! Please comments ;)
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Thank you,
you are exactly right, so I have visited website of HobbyKing looking for lightweight
gas generator for a model aircraft and nothing is offered.
To let a boat to keep geolocation in loiter mode I plan to use 2 or 3 electric thrusters,
one in front and 2 in the back, powered by gas generated, backed by battery.
Please let me know if gas generator lite is available for tests.
7kg / 1000W, not an option!
well, for a ArduBoat could be, but not to fly!
Make Toyota Hybrid Car to Fly like a drone
Hi,
my congratulations on your success.
I have visited your website looking for more technical details on your Hybrix project
but it looks like to be still under development.
The idea to build hybrid drones (fuel motor + electric motors) is not new but really great.
I have 7kg direct drive electric engine by LG (max power 1000w) not sure how to match
fuel motor and 3-phase generator (direct drive configuration).
For safety and failsafety I would suggest the use of intermediate battery to keep
the hybrid flying in RTL mode and grounding safely , when fuel motor gets down or off.
I would like to study efficiency of such hybrid solution
looking for budget fuel motor connected to 3-phase generator, all-in-one.
Problem is 3-phase AC > 1-phase DC converter to charge the battery as a backup
and power up DC motors + charge controller ( overcharge protection, charge balancer)
Pls let me know your opinion.
I can start with ArduRover or ArduBoat project not to risk collapse in the sky.
darius
manta103g@gmail.com
@Antonis konstas, ok, not problem, please send us a email to info@quaternium.es and please tell about your application!
I am very interesting of your fuel system do you have skype to talk?
I agree, more motors might be the solution. However, you do run into some aerodynamic constraints. If you do an X8, you have the same disk area as before. You can apply more power to the air, but effciency drops greatly as the AUW increases. If you do a flat Octo, you get more disk area, but you also gain wait (more, and longer, arms) and wind resistance. A Flat 16 would be even worse.
If you haven't watched it already, see my presentation here:
@Rob_Lefebvre more rotors make sense to me in those situations, up to 16 (in X8 setup) after that it just gets stilly and you need to re consider that platform you're using possibly moving to Helicopters
@Gabriel, that is the question I have. Everybody that I have talked to about 28" props seems to indicate that stabilization is difficult to achieve, but possible. I think it depends on the skill of the system engineer, luck, ESC choice, etc. These 28" prop systems have been on the market for about 2 years now, but it's very rare to see them performing a job, and I've never seen one flying in non-calm conditions.
Larger than that, I only hear about problems. I know somebody working on a 40" system, and this company is one of, if not THE pre-eminent UAV companies in the world (and I'm not talking consumer drones) and they are having trouble.
@Jose, the small one. Then the big one. :)
@Jose Luis Cortes Nice, had my doubts but this looks like it can really pack a punch. Is this going to be commercially available?
Also I've heard that one of the reasons Quads can't be scaled was because larger outrunners can't accelerate fast enough to achieve stability, hence variable pitch must be introduced into the equation.
So I'd have expected you to use helicopter motors, blades or collective pitch systems, And I've seen other gas quads do the same. Do you not have any problems accelerating or reaching stability with such big motors? Did you ever consider variable pitch?
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