Your WingtraOne flight-prep guide according to the WingtraPilot preflight checklist.
As the operator, you have to go through the pre-flight checklist within WingtraPilot before you can start the flight. For the steps with the question mark icon you can find Help slides to guide you on how to use the drone. If any of the preflight checks fail (e.g., sensor failure), the respective pre-flight check turns red and starting the flight is not possible. Below you will find an explanation for every checkpoint in the preflight checklist and troubleshooting advice if a check fails.
1. Is your ground clearance outside of take-off/landing at least 40 meters?
This point in the checklist is an automated test. It facilitates flight planning with safe altitudes for you. As soon as you have added a home location and added a flight area, the flight altitudes will be automatically checked to guarantee the flight path has at least the defined ground clearance related to the terrain elevation data. To modify the minimum ground clearance parameter, check the Safety parameters box on the right side. For a more detailed description, check out the Advanced flight planning chapter.
Note: This preflight check is only available if elevation data is enabled. Check WingtraPilot settings to activate the usage of elevation data.
2. Hardware: Is your distance sensor clean? Are your propellers intact and well attached? Is the camera lid removed?
Check if the distance sensor is dusty or is blocked by anything (snow, tape, etc.). The distance sensor is located at the tail of the WingtraOne, next to the middle stand. If it is not clean or if you are not sure if it is clean, take the time to clean it with a clean cloth.
Visually check that propellers are not damaged and are well attached. Try by hand to unscrew the propeller: hold the motor with one hand and the propeller with the other hand and try to open it— the red propeller has a normal right-handed thread, the green propeller has a left-handed thread. If the propeller unscrews by hand, tighten the nut with the torx or hex-wrench tool as much as you can. See the maintenance chapter for how to replace a propeller if damaged.
Remove the camera protection lid. Put it in the pilot box right away, as it is easy to lose.
Confirm by clicking the checkpoint in the checklist. Do not fly if any part of WingtraOne is damaged.
3. Connect telemetry link to tablet and power on WingtraOne
This point in the checklist is an automated test. Connect the telemetry to the tablet to the right of the home button. WingtraPilot automatically connects to WingtraOne as soon as the telemetry is connected to the tablet and WingtraOne is powered on. If an automatic connection can not be established, you can manually connect in the Settings tab by clicking on the "Telemetry" button on the left side. On the bottom, click on "Add." Select type "Serial" and baud rate "57600" and click "ok." If you still cannot connect, repower and make sure that you have attached the telemetry and powered on WingtraOne.
4. Check battery voltage
This is an automated test. WingtraPilot checks whether the battery voltage is above 30V. If the voltage is below 30V, take-off is prevented and you have to switch batteries. In the following further battery failure cases, WingtraOne will refuse take-off when trying to start the flight:
- Battery too hot (>40°C (>104°F))
- Battery too cold (<10°C (<50°F))
- Batteries are not charged evenly
5. Check even take-off position
This is an automated test. WingtraPilot checks whether WingtraOne is standing on even ground. Move WingtraOne if the check is red. If WingtraOne is level and the check stays red, re-power WingtraOne. The maximal slope that is accepted is 10 degrees (17.6%).
In addition to an even take-off location, make sure that the terrain is not damp and muddy causing the middle stand or the drone to get stuck, which can cause tipping while taking off.
6. Landing intervention setup: Ready with in-app controls
This is an automated check. WingtraOne can be controlled only from the tablet with the in-app control buttons. If the RC is used, the option to disable it, which is the recommended one, will pop up in this step of the checklist.
Flying using the RC is not recommended. However, in case, you select to use it, switch the RC on via the On/Off button in the middle of the unit. After switching it on, it automatically connects to WingtraOne.
7. Check GPS signals
This is an automated test. Depending on the weather and the location, it can happen that your WingtraOne does not receive GPS lock for several minutes. If GPS lock cannot be established after more than five minutes, try to re-power WingtraOne. If you still fail to get reception, submit a support request.
8. Camera readiness
This check will test the camera connectivity as well as the ability of the SD card to store the image and flight data. Click the related check item, and WingtraOne will try to write data into the camera during the test process. The checkpoint will turn orange, indicating that the camera test process is ongoing. Wait for it to finish successfully and the button on the tablet turns green. In case the checkpoint stays orange for more than one minute, click the check again, and the process will initialize.
After the camera check is completed, click on the satellite icon to make sure that the PPK module is connected. You can find more information about this in the Flight feedback article.
9. Calibrate airspeed sensor
Take the pitot cover out of the pilot box and cover the pitot tube with it. Start airspeed calibration by clicking on the checkpoint in the checklist. The automated calibration is finished when you hear the beep. Remove the pitot cover after successful calibration! If airspeed calibration fails, you can restart it by clicking onto the respective checkpoint again.
10. Review flight plan and upload to WingtraOne
After you have planned your flight, make sure you always review it by closing the checklist and checking the parameters and the planned flight path. Make sure WingtraOne will not collide with any obstacles. The altitude graph allows you to review flight altitudes properly. Note: having terrain data enabled (see Check 1) helps to set flight altitudes correctly. Be extra careful with the transition direction and altitude as well as the loiter circle altitude.
Click on this checkpoint in the pre-flight checklist to upload the flight plan to WingtraOne. WingtraPilot saves the flight plan automatically when you upload it by clicking on the checkpoint. In case you make any changes after uploading the flight plan, WingtraPilot will ask you to upload it again, which can be done by pressing the checkpoint again. If GPS position drifts more than 2 meters between flight plan upload and take-off, the check turns back to white and you have to upload again.
At the same time, further flight plan sanity checks are performed, and a warning is issued if they are not fulfilled:
- Infeasible flight plan: in case your first flight plan item after take-off or your last flight plan item before landing lies lower than transition altitude, your flight plan will be rejected
- WingtraPilot will give you the option to automatically insert a loiter waypoint at the respective location; it is recommended to insert the waypoint and manually adjust it (move it to a safe location and adjust waypoint entry/exit altitude to a safe value)
- WingtraOne checks camera SD card storage is too low to store the calculated number of images for the uploaded flight plan. If this is the case, clear more space on the SD card to make sure all images are saved. If you ignore the warning and continue the mission upload, be aware that you might miss some images towards the end of the mission
- Safe transition altitude checks if the minimum ground clearance for take-off and land is satisfied. In case you know that the transition altitude you set is safe you can continue as planned; we recommend to accept the suggest transition altitude by clicking "Yes" during this check
- Geofence violation: both the horizontal geofence radius and the geofence altitude are checked for compatibility with the defined mission. If required, you can increase the geofence parameter in the safety box on the right
11. Make sure the flaps are not obstructed and click to start the flap motion check.
At this point, WingtraOne runs a routine (see video) that checks the functionality of both flaps and servos by moving the flaps back and forth.
Starting from version 1.13, instead of confirming the flap motion integrity visually, the WingtraOne performs a self-diagnostic check, designed to detect a range of different potential damage cases to the flaps and servos.
After the flaps routine is completed, the checkpoint is turning green if no issue has been detected. If an issue is detected, the check will fail (red checkpoint). You can repeat the test once more in case of failure, by pressing the flap check button in WingtraPilot.
DO NOT FLY if the check fails twice and contact Wingtra Support.
- make sure the flap is free from obstacles, whenever the drone is powered.
- prevent taking off from dense high grass or bushes if possible.
- do not leave the drone powered for long periods of time if not needed.
12. Check that there are no people within five meters around the plane and that the environmental conditions and airspace are suitable to fly
Check if the environmental conditions are suitable to fly. Also check that your flight does not violate laws. Make sure no people are close to WingtraOne. In case of wind, we advise you to be more than five meters away from WingtraOne during take-off and landing. Furthermore, be aware that GPS is less accurate in the case of surrounding tall objects (e.g., buildings, trees). This can lead to drift of WingtraOne and an inaccurate landing. Therefore, keep more distance from tall objects. Confirm by pressing this checkpoint in the checklist.
13. Complete all previous steps and fly WingtraOne
To start the flight, click on "Start flight" and move the slider left to right as shown in the images below. The ready-to-fly button will turn solid green (-------) once WingtraOne starts flying.
Motor pre-flight check
Before starting the flight, there is an automatic check that spins the motors separately (see video below) to ensure that both of them function properly and that they both draw the same amount of current. In case this check fails, the take-off will be prevented. In such a case, check our list of errors for instructions on how to react.