The SCORPID-500 is now fully stabilised and controlled by a 9 DOF IMU (ArduIMU+ v2, HMC5843, GPS with firmware TriStab v3.3 JLN). The SCORPID-500 VTOL UAV uses an innovative design based on Gary Gress concept from Gress Aero. The Oblique Active Tilting (OAT) at 45° of the twin engines allows a full pitch control by using the induced gyroscopic moment. Today, the SCORPID-500 UAV prototype has done its first successful flights full IMU stabilised. Its flight is very stable. The earlier prototype has used 4 gyroscopes on board and some addtionnal mixers.
Stay tuned on: http://diydrones.com/profile/JeanLouisNaudinYou need to be a member of diydrones to add comments!
Comments
You will find below some detailled photos about the ArduIMU wiring and how to get the serial PPM from the R16scan receiver.
Regards,
Jean-Louis
Hello Jerry,
You will find below the full wiring setup that I have used for my my SCORPID-500 Full IMU:
Regards,
Jean-Louis
Hello Jerry,
Of course you may rely on my help for the integration of the ArduIMU into your nVader.
Regards, Jean-Louis
Hi Jean
The Scorpid -500 is looking very good, I`m very interested in your work with the Arduino. I wonder if it would be adaptable to my nVader. I`ve ordered all the hardware and would appreciate any assistance with the software.
Thanks Jerry
http://i204.photobucket.com/albums/bb8/eyeinsky/nVader%20600/IMG_00...
Jean Louis, thank you for the link, I hope I am not being rude by asking..I am puzzled by your comment that you are to 'explore and test myself the Gary's OAT concept,'. Unless I am mistaken with the pictures, you have already built and sucessfully flown such a craft employing similar OAT concept - perhaps the 2nd craft besides Gary's?
Regards
CH
Hello Wong,
A simple tilt motors bicopter without the gyroscopic control of the pitch is naturaly very unstable and very difficult to stabilize on its pitch axis. This why, I am very interested to explore and test myself the Gary's OAT concept because it is very innovative. I suggest you to download the Gary Gress paper HERE, you will find some detailled explanations about his OAT working principle.
Regards, Jean-Louis
Bonjour Jean-Louis,
Pardon my ignorance, and please educate me on this.. but I am thinking in your last modification where you
extend the height of the motors by 75 mm, would it increase the moment of the lever action by the motors to cause tipping over during extreme pitching action ? I mean it is counter attuitive isn't it?
I know, in fixed wings, it will improve dynamic stability, because the overall c.g. of the craft is brought forward.
The reason I am asking this is, I had pitch problem (uncontrollable) with my own tilt rotor project.
I did not use the OAT effect as expounded by Gary Gress, (though I wish I had known about it earlier).
I am about to re-build the tilt mechanism of my motors such that the c.g of the motor bell,propeller and hub
remains in the centre of rotation in order that it will be no levering action in all instances of pitch.
Please tell me if I am/or not on the correct approach.
And should I include the OAT effect in my rebuild or my craft will be still uncontrollable pitchwise.
Best Regards
CH.
Hello, another information here. You will find below the good balance point:
I have now replaced the previous Vario Helicopter landing gear by a Raptor Titanium 50 (Thunder Tiger) landing gear, and now the SCORPID-500 weight has lost 100g with the same safety feature... see below:
Regards, Jean-Louis
Hello to All,
FYI, I have just improved significantly the picth stability and its efficiency by just increasing the gap to 75 mm between the aluminum spar and the rotational plane of the throttle. See below:
Regards, Jean-Louis
Hello to All,
You will find below my latest test flights video with the SCORPID-500 FULL IMU done on december 12, 2010:
Flight of the SCORPID-500 OAT/VTOL Full IMU by Jean-Louis Naudin.
I suggest also you to visit the new blog about the OAT/VTOL bicopter from Matthieu Bourdarias which use the same IMU setup than the mine at:
http://diydrones.com/profiles/blogs/flight-of-the-scorpid450
He has done also successful flights yesterday with his SCORPID--450 OAT/VTOL...
Regards, Jean-Louis
-
1
-
2
-
3
-
4
-
5
of 6 Next