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Date/Time

Action

Notes

9:15

Briefing @ WARG Bay

9:45

Arrival at Flight Test Location

about 5 cm of snow on entire skid pad

10:15

Flight Test Card #1 - Efficiency/Endurance, 3 Waypoints

Flight 0 - couple hundred meters. Used blue controller. Took off, LTE dropped out after 5 seconds. Ended up returning to home - first flew up to 100 meters ~ 200 meters away to hit the first waypoint, then the 45 second no-telemetry count down kicked in.

Switched to RFDs.

Flight 1 - 1.2 km total flight. all fully autonomous through mission planner. Took turns a little hard. When returning, flew over the firefighter zone. Fixed this for the next flyover.

10:25

Flight 2 - 1.2 km total flight. same as previous. Did not fly over firefighters.

10:45

Flight 3 - 1.2 km total flight.

Had to check battery health immediately following this. Battery failsafed about 10 meters off the ground, tried to land, Nathan took over on the blue TX manually. Had to hit full throttle immediately after taking control just to stop the drone from falling. Batteries visibly sagged very hard and drone had a slightly rough landing (not a free fall, just a slow drop) from about 2 meters.

Can be seen in IMG_1496 March 23 - OneDrive (sharepoint.com)

10:50

Flight test card 3 - RTK GPS checks

Took ~ 5-10 minutes. Got a hold.

11:30

Debrief

Below

 

 

 

 

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💻 DEBRIEF

Logs: https://uofwaterloo-my.sharepoint.com/:f:/g/personal/uwarg_uwaterloo_ca/EprwSfOtGeZOom-fAK63e0gBZ2c94HDJ8xIIYBWXcJXheg?e=hJEmC2 Connect your OneDrive account

Media Ingest: https://uofwaterloo-my.sharepoint.com/:f:/g/personal/uwarg_uwaterloo_ca/EqjTFLI7eSZHil5CgZ13PYMBk9KPlNMFPESkOseTALivzg?e=tapYW3 Connect your OneDrive account

Tip

  • Didn’t crash

  • ~1.5ish comp laps with 4x 5000mAh batteries (old batteries)

  • Flew at 30m/s (108 km/hr ground speed)

  • RFD900 works

  • RTK got to fixed mode at 5mm accuracy

  • Set up quickly and followed checklists

  • Checked the pre-arm warning in the bay before leaving

Note

  • Speed was unpredictable.

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  • set at 18 m/s but flew at ground speed 30 m/s

  • RTK easily switches back to float

  • Noise in the video signal

  • Didn’t have a mission planner setup with coordinates for task 1

    • Meant we had to adjust it in the bay before and also during the flight test.

  • Lack of visual observers - most people heads down on the laptop. Someone on the flight line should be looking at the drone at all times

  • Very fast turns - acceleration at direction changes looked very high

Warning

  • LTE dropout

  • OSD dropout (same interference probably)

  • Batteries very uneven voltages, failsafed and had a mid-rough landing at the end of the 3rd flight.

    • probably cooked for good. these ones are bad now.

      • good thing we’re getting new batteries on monday

    • can use a couple of them for ground tower things, but shouldn’t fly them again

Action items

  • Reset the LTE module because current settings made it worse

  • made a board that switches RFD to LTE

    • takes PWM input

    • Do we have GPIO? -@aidan

      • if so we can just use this to switch transmission

    • Can we just measure RSSI?

      • LTE doesn’t report a RSSI.

      • need a LUA script to say ‘if disconnected' check after 20 sec and if still disconnected, switch over.

      • This should be ok for comp because control is still connected. ELRS.

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