PX4 S500 Generic · 2023-01-29

Flight telemetry summary

Distance Meters

10.2 m

Maximum Altitude AGL

4.1 m

Maximum Ground Speed

2.16 m/s

Minimum Battery Percent

9.9%

Minimum Battery Voltage

9.76 V

Minimum GPS Satellites

17

Maximum GPS HDOP

0.64

Flight Modes

AUTO_MISSION, AUTO_RTL

Maximum Distance From Home Meters

4.7 m

Maximum Distance From Home Time

11s

Average Ground Speed

1.69 m/s

Maximum Climb Rate MPS

1.02 m/s

Maximum Descent Rate MPS

-1.24 m/s

Battery Consumed MAH

79.8 mAh

Battery Consumed Wh

0.91 Wh

Voltage Sag

1.59 V

Flight Mode Seconds

AUTO_MISSION: 10s, AUTO_RTL: 16s

Maximum GForce

3.5 g

EKF Healthy

Yes

Weather at the flight

Source

open-meteo-archive

Sampled At Utc

2023-01-29T08:00Z

Latitude

27.68

Longitude

85.32

Temperature C

21.2 °C

Wind Speed MPS

0.36 m/s

Wind Direction Degrees

304

Wind Direction Cardinal

NW

Weather Code

0

Weather Description

Clear

AI flight report

This was a very short hop — 25 seconds total, covering just 10 m of ground track and reaching a maximum of 4 m above home (at 0:14) before the flight ended. The aircraft took off at 0:07, briefly flew a mission leg (AUTO_MISSION, roughly 0:00–0:10) reaching its top speed of 2.2 m/s at 0:09 and a farthest distance of 5 m from home at 0:11, then switched into AUTO_RTL at 0:10 and returned almost immediately. Conditions were not a factor: winds were light (0.36 m/s) and skies clear. GPS was solid throughout, with 17–18 satellites and HDOP no worse than 0.64.

The flight's real story is the battery. It started at 88.3% and 11.8 V at 0:00, but by 0:05 a low-battery warning had already fired, and by 0:11 the system flagged battery-critical (<15%). By the 0:15 sample the reported charge had fallen to 26.5% with voltage down to 10.6 V, and the logged minimum was 9.76 V at 0:10 — a 1.59 V sag against only 80 mAh (0.9 Wh) of actual energy drawn. That combination — a huge percentage/voltage drop for almost no consumed capacity — points to a battery that was already weak or a state-of-charge estimate that isn't tracking the pack correctly, not a flight that genuinely burned through 60+ percentage points of charge in 15 seconds. This is almost certainly what triggered the early switch to RTL at 0:10, cutting the mission short after only 10 seconds.

The flight ended hard: at 0:16 the log shows a 3.45 G imp

Detected flight events

1. 0s — Barometric and fused altitude disagree by 1230 m

   Barometric and fused altitude disagree by 1230 m

2. 5s — Battery below 30%

   Battery below 30%. Battery at 30%. Time to plan the return leg.

3. 7s — Takeoff (altitude threshold)

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

4. 9s — Maximum ground speed: 2.2 m/s

   Maximum ground speed: 2.2 m/s — the fastest the aircraft moved over the ground.

5. 10s — Flight mode changed to AUTO_RTL

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

6. 11s — Battery below 15%

   Battery below 15%. Battery at 15%. The aircraft should land as soon as possible.

7. 14s — Maximum altitude: 4 m above home

   Maximum altitude: 4 m above home — the highest point of this flight.

8. 16s — Impact or hard landing: 3.5 G

   Impact or hard landing: 3.5 G

9. 25s — Vehicle disarmed

   Motors disarmed — the flight is complete.