[Braking ground]Propeller design suggestion?

[Jestersage]

So far, I have created a prop-plane that utlize two active EM-32 motor, each mounted 8x basic fins, fixed pitch at 45 degrees. With this, the entire craft seems to max out at 50m/s.

So what other wings can I do to increase the airspeed?

[Guest]

The main limiting factor is your propeller. Add small servos to it so you can control the blade pitch. 

A second limiting factor is efficiency. Put a freewheel under your motor and attach more blades to that, pitched the opposite way. It'll contra-rotate and greatly increase efficiency.

Finally, tune your props. Eight blades is a lot. I've gotten best results with 3-6 blade props. Make them as big as you can fit in your craft.

You should be able to get close to 90 m/s this way. At that speed your blade pitch will be around 77 degrees. This is way too much to get moving on the ground, which is why you need adjustable pitch.

Edited June 18, 2019 by Guest