Recent content by KDE Direct

A new thread is posted, showing the updated setup for our "V2" edition. http://www.dronevibes.com/forums/threads/kde-direct-dynamometer-development-v2.32716/

Hey Everyone, Development of the thrust and efficiency data for our KDE Direct UAS Brushless Motor, Electronic Speed Controller (ESC), and Propeller Blade combinations is a critical design aspect of our Research and Development, and we make sure to post this for each motor edition on our...

Hey Everyone, We get asked daily on compatibility and setup of the 3D Robotics Pixhawk (PX4) autopilots and others using the PX4 open-hardware platform. Being readily available and an open-source platform (easy to incorporate into commercial and industrial operations), it's a common...

If the UBEC fails to supply the 5V power line (the OPTO-Circuitry is rated from 5V up to 35V maximum), then the OPTO-isolation will be unable to properly transmit the control signal. In this regard, the ESCs would loose connection to the flight-controller, and go into fail-safe mode after two...

True OPTO-Isolated ESCs do require power to the servo rail, or the ESCs will fail to arm properly (minimal voltage to power the internal circuitry). The KDE Direct XF ESCs are indeed truly OPTO-Isolated to the control-servo lead, so power is required via a UBEC to the servo rail on the Pixhawk...

The latest "HVC" series ESCs resolved the heat-generation concerns with the KDE Direct XF ESCs, with a variety of added technologies such as Synchronous Rectification (regenerative-braking) and significantly improved heat-sinking (all Aluminum Case). The KDEXF-UAS95HVC is our current flagship...

Ferdinand - wow, that's an impressive machine, that's the first of a X-16 video I've seen flying with those motors. Numerous clients have been running Dodeca X-12 systems for various heavy-lift applications, but an X-16 of this size is incredible, great job. :) Another client sent this video a...

Hey Everyone, When we first launched the KDE7215XF-135 Brushless Motor series, my initial thought was the motor would produce more than enough thrust for heavy-lift applications. At a peak thrust of 14.5 kg/motor on 27.5" x 8.9 propellers, this seemed to be an incredible amount of power at...

Dear Arytron, Thank you for the detailed information - I know you shared this with me via e-mail, but helping to share this with the community is an excellent help for us. We have been in discussions with 3DR and are also soon releasing a new firmware edition with additional...

Hey Everyone, There's no reason the system would not be working, assuming the internal electronics are the same as the Pixhawk system (3DR uses our ESCs in their commercial-group as well), there is power being applied to the servo-rail to properly arm the OPTO-circuitry, and the programming on...

You are correct in that the blade "flapping" is an aspect of changing characteristics of lift, but take into consideration wind effects, forward flight, and also tolerances of the propellers. If the propeller is indeed fixed (single-body), then there is no freedom for the propellers to...

Hey Everyone - Just posted the new KDE Direct Design Engineering - Episode XI: Carbon Fiber Propeller Blades video to YouTube. Rather than try to explain all the Engineering logic and design/manufacturing decisions via e-mail, the best manner is to simply show the technology via video and...

Hey Everyone, We just posted a new video to YouTube, outlining some of the new products from KDE Direct, and also a demonstration of Synchronous Rectification, and the great benefits the technology has for Multi-Rotor (UAS) power systems. The new technology introduced is part of the new...

Hey Bart - Great explanation and absolutely agree, one of the best things to do is use a custom-mix on a X-8 system, to prevent the off-balance. Our Team has never been a fan of the standard DJI X-8 mix (all upper motors spin CCW, all lower motor spin CW) - sure it's easy from an installation...

What is becoming popular, is the concept of using the dual-propeller on the upper-disc of the coaxial design, and the triple-propeller on the lower-disc. In this regards, you maintain the same rotor-disc diameter, but have the advantages of the higher-lift capacity of the lower-disc. Such as...