Jeroen's NG
- NOTE
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Daedalus 1.0 was killed in action during a speedtest on the runway of Finowfurt airport on 13-8-2011. The UAV described below is the 2.0 version of the Daedalus hexa
Description
This is a rather heavy hexa copter for photo/video purposes. The copter is controlled by a Turnigy 9x TX hacked with a "Scherrer UHF" system. This ensures a perfect range for making longer flights. The Scherrer UHF system works on 433MHz FHSS. This means it is harder to jam and it is not necessary to use channelnumbers like the 35MHz transmitters. The ESC's are mounted on the ends of the arms of the frame. This has a few reasons: first this saves room on the centerplate. Secondly the ESC's are better cooled under the propellors. Lastly the three-phase leads to the motors are carrying a high-frequency pulsed signal. This produces a lot of EMI on the onboard transmitters and receivers. By reducing the length of the leads and keeping them away from the antenna's the receiver range improves.
Daedalus?
Yes, indeed: Daedalus is the father of Icarus who fell to his death when flying with self-made wings. Daedalus however did manage to fly with those wings and i thought that was a suiting name for the project.
Specifications
Maidenflight
27.04.2011 / 27.12.2011
HW Revision
HW-0.22-mini r3
Motors
6 x NTM Prop Drive Series 28-30A 750kv
Controllers
6 x Turnigy Plush 30A modded with Quax's firmware
Total Weight
1600gr (without camera)
Motor Weight
58g/motor
Frame Weight
?
Frame Type
Alu-hexa 1cm
Frame Span
88cm
Batteries
LiPo 4S 30C 3600mAh
Radio Link
Daedalus is using the Scherrer UHF system. This system is working on multiple frequencies in the 433MHz band. The Frequency Hopping system is combined with antenna diversity on the receiver-side. The "Long Range Diversity" receiver has two antennas and the RX chooses the antenna with the best reception.
Video Link
Daedalus has a 2.4GHz video link using Law Mate transmitter/receiver combo.
Frame
The frame is a custom made frame, made of 10x10mm aluminium beams and 1mm thick aluminium plating. I have used M3 lock nuts. The ESC mounting plates are glued to the frame instead of using screws. This is lighter solution.
ESC's
Daedalus is flying using six converted Turnigy Plush 30A Electronic Speed Controllers (ESC). The manual on how to convert the Turnigy Plush to i2c can be found here. The newer Turnigy Plush controllers can no longer be converted using quax software, so donnot buy new Turnigy Plush controllers for this purpose.