Here a video of the test of a Nimbus 4 meters wingspan electro-glider piloted by the firmware ArduPlane 2.28xp1 (updated version with a JLN mod). Test done in HIL mode with the AeroSIM-RC v3.83 simulator connected through the AP Mission planner v1.1.30 on an ArduPilot Mega board v1.
Test Mission profile:
- Full AUTO TakeOff,
- Exec of the flight plan (8 Waypoints),
- Full AUTO Landing.
The original ArduPlane v2.28 firmware has been updated (xp1) with some improvements:
- Tuning of the final slope for a smooth touchdown, tested with the Nimbus 4 on AeroSIM-RC 3.83 in HIL mode,
- Auto calculation of the wp_radius Vs the ground_speed and the max turn angle in AUTO mode so as to get the best turning point at the Wp,
- add the CLOSED_LOOP_NAV ENABLED switch to allow redoing the flight plan after the end of the exec,
- add HIL mode test in GCS_Mavlink.pde for AeroSIM RC v3.83 (and also Xplane v9), the APMHill plugin tested with the Nimbus 4m electro-glider model,
- the CLI switch can be disabled, this allows to use only a APM CPU board without a full IMU shield for HIL test.
This is a part of the project Thermopilot (a Thermal Hunter drone): The purpose is to build a full autonomous Thermal Hunter Glider which is able to fly for a long duration in an area defined by a radius, a ceiling and a minimal altitude. The glider uses thermal soaring and dynamic soaring methods commonly used by full scale gliders during cross country soaring competitions. The ThermoPilot has been tested successfuly in flight during the summer and spring 2011 on a Cularis and a ASW24 3.50m electro-glider (below). Lot of flights have been done in high mountains (slope/ridge soaring) and above the fields (thermal soaring).
The Thermopilot project will continue intensively during the spring 2012... Stay tuned...
Regards, Jean-Louis
More infos at: http://diydrones.com/profile/JeanLouisNaudin
Comments
Here a video of the ThermoPilot v5.2 in action during a cross-country soaring mission type tested in HIL mode on XPlane v9.7:
Regards, Jean-Louis
I am really enjoying seeing proper airframes here, gliders rule!
Hello Marco,
Thanks for your comments. The Thermopilot mods for ArduPlane will be not yet released at this moment, because it is a part of a bigger project that I am currently developping. It will be released in few months after some further developments and full real tests missions on big gliders UAV in various weather conditions and environments.
Regards, Jean-Louis
WOW! Great job JL!
Have you plan to release your mods? :P
Here some news about the ThermoPilot v5 project currently under developpement (now in phase 4). The Thermopilot algorithms have been now successfully moved to the latest version of the ArduPlane v2.28 firmware (official release) wich is now the named ArduPlane v2.28ThP5 version for the project.
The ThermoPilot project have been started in october 2010 and lot of real tests flighst have been already done in summer/spring 2011 in fields and in also high mountains. I have started the project with a simple ArduPilot IMU board on a Cularis 2m60 electro-glider (phase 1, 2) and then on a ASW-24 3m50 electro-glider with an ArduPilot Mega 2560 v1.4 IMU (phase 3). The phase 4, now uses a APM v2 with the v2.28ThP5 firmware. My new firmware version uses a machine learning algorithm (ML) to do an accurate thermal hunting during a full autonomous cross country soaring mission of the glider.
I am using Xplane v9.70 as a test plateform in HIL mode because, it is able to reproduce with accuracy various weather conditions (thermal upwards, dynamic soaring, slope and/or ridge soaring) in real mapped world and fully compatible with the google map environnement...
Below some screens about the v2.28ThP5 tested in HIL simulations on Xplane v9.70, this new release of the firmware will be tested on the ASW-24 as soon as the weather will be less cold and better for the thermal hunting...
Below the flight plan used as a cross crountry soaring mission:
Along the predefined track, if the glider found thermal upwards, it uses them to gain altitude and then continu following the route.
In HIL simulation the glider can fly indefinitely without the need of the engine... Its really fun...
Regards,
Jean-Louis
Here a simple and a cheap method that I am currently using to conduct the firmwares (Arduplane and Arducopter) tests in HIL simulations with AeroSIM-RC and/or X-Plane v9. No IMU shield is required here, I am using only a simple APM v1.4 (2560) board and an USB-FTDI cable connected to the PC through the APM mission planner. I pilot like in real with my transmitter (Turnigy 9x) and the receiver (9X8Cv2) is connected to the the APM v1.4 and powered with the USB.
Regards,
Jean-Louis
Hello Pierre,
I am glad to have some news from you and also to know that you are interested by this field of research...
Here some photos of a hand launch of my 4m20 wingspan ASW27 and fly in french Alps... I am really impatient to be again in summer and spring for thermal hunting and slope soaring...
Regards, Jean-Louis
Thanks Jean-Louis for the info.
Maybe you remember we were colleague in a famous company which was based in Les Ulis ;-)
Hello Marco,
The emax bl4020 seems a good motor with a low Kv (522 Kv) and a high torque and I think that it will be able to replace the cyclon 60 motor.
Here a link about the Cyclon 60 brushless motor. I don't know if this motor is still manufactured, because my ASW27 is a 6 years old glider with a lot of hours of fly and thermal hunting...
Regards, Jean-Louis
Hello JL, i tried to found another type of motors like your at low price, but is impossible (LOL).
Just only this one, but the shaft diameter is 8 mm (damn):
http://www.goodluckbuy.com/emax-bl4020-522kv-outrunner-brushless-mo...
See the specs and give me your impression.
Anyway is possible to find your Cyclon at an european store?
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