PX4 Quadrotor · 2023-05-05

Flight telemetry summary

Distance Meters

702.1 m

Maximum Altitude AGL

74.7 m

Maximum Ground Speed

13.11 m/s

Minimum Battery Percent

81.4%

Minimum Battery Voltage

46.27 V

Minimum GPS Satellites

20

Maximum GPS HDOP

0.74

Flight Modes

POSCTL, ALTCTL, AUTO_MISSION, ALTCTL, POSCTL

Maximum Distance From Home Meters

164.8 m

Maximum Distance From Home Time

2m 12s

Average Ground Speed

5.2 m/s

Maximum Climb Rate MPS

6.08 m/s

Maximum Descent Rate MPS

-2.54 m/s

Battery Consumed MAH

20 mAh

Battery Consumed Wh

0.96 Wh

Voltage Sag

3.81 V

Flight Mode Seconds

POSCTL: 2m 34s, ALTCTL: 0s, AUTO_MISSION: 1m 26s

Maximum GForce

4.06 g

EKF Healthy

Yes

Weather at the flight

Source

open-meteo-archive

Sampled At Utc

2023-04-26T16:00Z

Latitude

46.21

Longitude

-93.79

Temperature C

7.1 °C

Wind Speed MPS

3.81 m/s

Wind Direction Degrees

175

Wind Direction Cardinal

S

Weather Code

2

Weather Description

Partly cloudy

AI flight report

This was a 4:00 flight covering 702 m, staying close to home with a farthest distance of 165 m at 2:12. The drone climbed quickly after takeoff at 0:05, reaching its peak altitude of 75 m above home by 0:24, then settled into a cruise around 70 m through the AUTO_MISSION segment (roughly 0:43 to 2:10). After switching back to POSCTL at 2:10, it descended in stages — 68 m at 2:30, 40 m at 3:00, down to 2.8 m by 3:45 — for a controlled landing. Average moving speed was 5.2 m/s, with a top ground speed of 13.1 m/s recorded at 2:25 during the POSCTL segment. Conditions were cool (7.1°C) with light wind (3.81 m/s from the south) and good GPS coverage throughout (20-27 satellites, HDOP never worse than 0.74).

The flight opens with a flagged anomaly: at 0:00 the log shows a 289 m disagreement between barometric and fused altitude estimates, and the derived diagnostics confirm a similar gap (293.9 m) at 0:41. This is a sustained mismatch, not a brief blip, meaning one of the two altitude sources was significantly off during the climb-out — worth checking against video or GPS altitude if available. Around the same time, at 0:44, motor 2 hit 1903 µs (near the 2000 µs ceiling), acceleration spiked to 2.77 G, battery voltage dipped to its flight-low of 46.27 V, and the aircraft reached its steepest attitude of 44° from level at 0:25. Individually some of these could reflect a sharp mission-start maneuver, but the cluster of high motor output, high G-load, and voltage sag all landing within the same 20-second window (0:25-0:44) suggests the vehicle was working hard through that transition — possibly an aggressive climb or a compensating correction — rather than four unrelated events.

There's also a widest motor spread of 265 µs at 2:31, right after the 13.1 m/s top-speed moment at 2:25 and the mode switch to POSCTL at 2:10. That's consistent with a turning or speed-adjustment maneuver rather than a persistent asymmetry, since it's a single-sample reading rather than a sustained pattern in the table.

Two things worth following up on: first, resolve the 0:00-0:41 altitude disagreement — pull raw barometer and GPS-altitude logs for that window to confirm which source was correct, since a wrong fused altitude could mislead terrain-following logic on a future flight. Second, the 0:44 motor-2 peak of 1903 µs left very little headroom before the ESC ceiling; if that coincides with a real maneuver (not just a data artifact), it's worth checking payload/CG balance or that specific motor's health, since sustained near-saturation is the kind of margin that doesn't hold up if wind or payload increases next time.

Detected flight events

1. 0s — Barometric and fused altitude disagree by 289 m

   Barometric and fused altitude disagree by 289 m

2. 5s — Takeoff (altitude threshold)

   Liftoff at 2 m. The aircraft leaves the ground and starts its climb.

3. 24s — Maximum altitude: 75 m above home

   Maximum altitude: 75 m above home — the highest point of this flight.

4. 43s — Flight mode changed to ALTCTL

   Flight mode changed to ALTCTL. The pilot or autopilot switched control behavior here.

5. 43s — Flight mode changed to AUTO_MISSION

   Flight mode changed to AUTO_MISSION. The pilot or autopilot switched control behavior here.

6. 2m 10s — Flight mode changed to ALTCTL

   Flight mode changed to ALTCTL. The pilot or autopilot switched control behavior here.

7. 2m 10s — Flight mode changed to POSCTL

   Flight mode changed to POSCTL. The pilot or autopilot switched control behavior here.

8. 2m 25s — Maximum ground speed: 13.1 m/s

   Maximum ground speed: 13.1 m/s — the fastest the aircraft moved over the ground.