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The SCORPID-500 a full IMU controlled OAT/VTOL UAV

Posted by Jean-Louis Naudin on November 24, 2010 at 1:00am

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.

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arduimu, drone, uas, uav, vtol, autopilot, multicopter

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Comments

Developer

Jean-Louis Naudin November 18, 2010 at 4:44am

You will the good method for obtaining a good Center Of Gravity (COG). If the SCORPID-500 is hanged with a rope attached to the two main motors axis, you must get this below:

Regards, Jean-Louis
Developer

Jean-Louis Naudin November 17, 2010 at 10:39pm

You will find below the full diagram of the special mixing that I have tested successfully in flight with my SCORPID-500 UAV:

Regards, Jean-Louis
Developer

Jean-Louis Naudin November 17, 2010 at 10:36pm

Here a detailled photo of the OAT system that I have designed and built for my SCORPID-500 UAV:

Regards, Jean-Louis
Developer

Jean-Louis Naudin November 17, 2010 at 12:24pm

Hello, the SCORPID-500 design is fully in line with the single axis OAT design from Gress. The obliqueness between the main spar and the tilt axis may vary between 30 to 45°...
Regards, Jean-Louis
Michael Lingg November 17, 2010 at 9:47am

I believe this design differs a tad from Gress' design as this one has a 45 degree angle for the tilt as opposed to the Gress 90 degree angle. Balances the gyroscopic effects while still allowing for propulsion from the rotors being tilted?
Mike November 17, 2010 at 9:39am

Gary Gress' aircraft can be found here - http://www.gressaero.com/
Developer

Jean-Louis Naudin November 16, 2010 at 11:55pm

Hello, you will find below some technical details about the setup of the SCORPID-500 the OAT controlled UAV...

Regards, Jean-Louis
Developer

Jean-Louis Naudin November 16, 2010 at 10:02pm

Thanks for your comments. As you may notice, the angle of tailplane seems a bit strange and uncommon compared to a conventionnal airplane. During the hovering is not used, but it is useful during a fast forward flight to negate any tendency to pitch up.

Regards, Jean-Louis
Developer

Randy November 16, 2010 at 3:53pm

Very neat. i've never seen something exactly like that before actually flying. It looks a fair bit like the helicopters they had in the movie, "Avatar". What's the back wing for? That's not actually doing anything at low speed right?