Achilles79

Hey,

I'm just starting to research a project where I plan on designing and building an autonomous helicopter. As I am brand new to RC helicopters and RC systems in general, I've obviously come across a few difficulties. To start off with, I am struggling to pick a blade / motor combination. In order to simplify the hardware aspect of this project (I'm more interested in the software aspect), I was thinking of using 4 fixed-pitch, independently controled, brushless motors aligned such that the vertical axises of all the motors are at the vertexes of a square. Ideally the entire system will weight less than 3lbs (although I anticipate it to be much less than that) and have a maximum diagonal width (across the square) of 2". If this is the case, could anyone recommend an approriate, maximum theretical thrust to obtain for the entire system, along with the coresponding blades and brushless motors?

Any and all help is greatly appreciated.

Thank you,
Achilles

nothinbetr2do

maybe this will give you some ideas http://www.brookstone.com/ar-drone-q...tml?bkiid=hmpg

Achilles79

Thanks.  That is pretty much the kind of design I had in mind, except hopefully much more advanced in the end
Question though - is it a bad choice to use rc helicopter "tail blades" as main blades?  The reason I ask, is I would like the total diameter of the circle occupied by each main blade to be at roughly a maximum of 6".  I can't seem to find such short blades which are described as main blades instead of tail blades.  For example this: click

Rafael23cc

My Feedback: (6)

Forget helicopter parts for that type of design. The only "parts" from an RC heli that you would use will be the electronics, nothing else. Use fixed pitch blades (airplane props) for your application.

Rafael