"Well, this is kind of an old thread, but since none of the questions was never really answered, I don't think the admins will mind we revive it.
To answer your questions, I'd say that having more surface will affect positively the…"
Andy Gongora's Discussions
Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?
Started this discussion. Last reply by Andy Gongora Jan 15. 18 Replies 0 Likes
Hi everyone :)Althought it seems to me it's the first question that comes in mind when building a multirotor, there's not really much interest in determining which is the best design (deppending on…Continue
Tags: comparation, octocopter, hexacopter, quadcopter
Andy Gongora's Page
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Andy Gongora replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?
Andke replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Any difference in ability to remain stable in strong, uneven wind ?
"
Andy Gongora replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"http://www.mikrokopter.com/ucwiki/mkm?highlight=%28mkm%29
Sorry >.<</body>"
Dimitar Kolev replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Which page?"
Andy Gongora replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Just found this page with lots of layouts.
But althought it's a wiki-like page, there's no extra info (at least when i click on them) about each.
Guess I'll stick in the end with a radial hexarotor, it's somewhere between quad…"
Andy Gongora replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Isn't the T version the same as the radial? Only that instead of having for each rotor an arm, 2 rotors share a T arm (there are 4 T arms on a octocopter) ??
If not, please add a photo or a link :)"
ModeratorGary Mortimer replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?
"Yes thats the chap, there is also the T out there as well."
Andy Gongora replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"You've forgotten the best one, the V like the Falcon 8 from Astec
I'm not sure if you mean this one
Yes, you are right. Maybe someone is looking for the diferences between radial and lineal airframe desings. I'll add this one to the…"
ModeratorGary Mortimer replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?
"You've forgotten the best one, the V like the Falcon 8 from Astec
Advantage
You can look UP
For commercial work quads are so yesterday ;-)"
Peter Seddon replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Ok here is some real data from a Tricopter and Quad just as they get flying (there will be some ground effect help as I couldn't lift off and clear the ground:
Tri:
Ready to fly weight 825g
Lift off power 135W (at 10.1A from 3S battery)
42cms…"
Haldir replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Yes, my less flight time is based on the assumptions of same/similar batteries.
Keep in mind that there are some legal limits to the weight of such a copter in certain countries. Some countries have limits of 1kg (like flying without insurance,…"
Martin Seven replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Each beam (two opposite arms) are co-rotating, meaning their torque adds up, not cancels out.
If one motor fails, the MCU would have to kill the motor opposite to the failing one, otherwise it would flip over. So now the quad has only two good…"
Martin Seven replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"The energy density (watt-hours per kg) is dependent on the technology used. Right now the best (or almost the best) is lithium-polymer, or lipo, so that's why we're all using it. It gets better with time as the technology progresses.
Re…"
Alex Zarenin replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Quads (as far as I understand) have two motors on one cross-beam rotating in one direction while two other motors on other cross-beam counter-rotate. This way you can compensate for yaw without changing the overall lift by increasing lift on both…"
James Pistorino replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Help me understand why you say that a single motor out on a quadcopter means that it is going down. Do you mean down in an uncontrolled way, or just down as opposed to sustained flight?
On motor failure, why couldn't you just shut down the…"
Andy Gongora replied to Andy Gongora's discussion Quad vs Hexa vs Octo -copter. (Radial and coaxial) Advantages-Disadvantages?"Quote Haldir > Hexa/Octacopter: shorter flight time
Quote Martin Seven > More engines means more power! and more lift. That means more batteries. That means more time in the air.
So now I'm getting a bit confused. @ Haldir: did you mean…"
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- About Me:
- Studying I.T.I Industrial Electronics.
Nothing special about me :)
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- Tell us a bit about your UAV interest
- I'm studying a grade in industrial electronics and have been since a child interested in UAVs (mostrly because of their appearance in video games at the beggining) and for the past years I've been playing with the idea of building my own quadcopter juts for fun, and afterwards, making it completely ground sensoring/computing independent.
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