Propeller drag coefficient from thrust coefficient? (EPP1045)

Is it possible to calculate propeller drag coefficient from thrust coefficient? Are they related in any way?

I have calculated propeller thrust coefficient by simple approximation using DriveCalculator. I then made some curves in Excel and would like

jDrones AC2830-358 Dynamic Characteristics (replaced by EMP2836/09, 880KV)

I'd like to simulate a jDrones AC2830-358 motor using Simulink. I'm guessing, it's characteristics wouldn't be too different of many other engines with similar KV ratio, power and size. In DriveCalculator's database I found EMP2836/09 (880KV), which

Punctuating ESC to motor connectors in ArduCopter Kit (hopefully right term used :) )

Hi,

in case no one signalized this yet here and Jani or other AC makers wouldn't know: many people seem to be having problems with the ESC to motor connectors supplied with the jDrones ArduCopter Kit (checj here or here). I crashed my AC about 4 times

Where to buy aluminium profiles like the ones for ArduCopter frame

Hi,

I already spent many hours searching through the web, so I decided to ask. Does anyone know where (apart from jDrones shop) can I buy 12x12mm 0,5mm thick alu profiles?

Regards,

Tom

ROS drivers for ArduCopter, anyone?

Hi,

I'd like to use ArduCopter with ROS, so I wanted to ask you guys if anyone else would be insterested as well. I've already successfully tested ROS on a BeagleBoard-xM with a Kinect sensor. BB-xM was able to process QQVGA pointclouds @15Hz, which s

ArduCopter KIT ordering (from EU)

Hope someone knows the answers:

1. Does DIY Drones Store ship to Europe, or should I rather choose jdrones.com? They used to have ArduCopter parts at lipoly.de, but this seems not to be the case anymore. Or are there any other options?
2. On the DIYDrones St

Is it feasible: ArduCopter + BeagleBoard with Camera + Optical Flow sensor

I'd like to create a platform to be able to test various visual based VTOL UAV control techniques for indoor environments. I've got some theoretical background in this field already and would like to move on to building a real flying platform. Yet I'

Extended Kalman Filter design for Attitude Estimation of a Quadrotor (with Acc + Gyro only)

Hi,

I've been stumbling across this issue for a pretty long time now and I think the right time has come to ask you guys for help. I've written a simple quadrotor simulation in Matlab / Simulink basing on Randal Beard's papers (a short video below -

Quadrotor simulation for vision-based attitude estimation aiding in indoor environment and visualization

Hi,

Will ArduCopter work with Xbee 868MHz?

Has anyone already tried to use ArduCopter with a 868MHz Xbee (EU), like the one from Digi (I've only found this one supplier, maybe there is something cheaper)? Will this work seamlessly with the XtreamBee Board and ArduCopter?

Fully autonomous indoor quad with video transmission

Hi, I'm responsible for an initial design (and then probably implementation) of a fully autonomous indoor quad with video transmission. I'm a beginner in the field of RC with some background in control theory and image-processing, pretty solid progra