PX4 F450 Frame · 2023-11-14

Flight telemetry summary

Distance Meters

4.5 m

Maximum Altitude AGL

0 m

Maximum Ground Speed

0.91 m/s

Minimum Battery Percent

81.1%

Minimum Battery Voltage

10.28 V

Minimum GPS Satellites

15

Maximum GPS HDOP

0.74

Flight Modes

ALTCTL

Maximum Distance From Home Meters

4.7 m

Maximum Distance From Home Time

17s

Average Ground Speed

0 m/s

Maximum Climb Rate MPS

0.28 m/s

Maximum Descent Rate MPS

-0.33 m/s

Battery Consumed MAH

4.7 mAh

Battery Consumed Wh

0.05 Wh

Voltage Sag

0.79 V

Flight Mode Seconds

ALTCTL: 24s

Maximum GForce

5.66 g

EKF Healthy

Yes

Weather at the flight

Source

open-meteo-archive

Sampled At Utc

2023-10-13T10:00Z

Latitude

17.52

Longitude

78.37

Temperature C

31.5 °C

Wind Speed MPS

2.24 m/s

Wind Direction Degrees

80

Wind Direction Cardinal

E

Weather Code

0

Weather Description

Clear

AI flight report

This was a very short flight — 24 seconds total, entirely in ALTCTL mode — and by the numbers the aircraft barely moved: track distance was only 4 m, farthest point from home was 5 m (reached at 0:17), and max altitude above home was 0 m. Average moving speed was 0.0 m/s with a top speed of 0.9 m/s, so this reads as a hover/ground-level check rather than a travelling flight. Weather was a non-factor: 31.5°C, clear skies, and a light 2.24 m/s breeze from the east. GPS was solid throughout, holding 15 satellites and a HDOP of 0.74.

Two things stand out. At 0:00, the log flagged a 575 m disagreement between the barometric and fused altitude estimates — a large gap given the aircraft never actually left ground level. Since the vehicle's real altitude stayed near 0 m the whole flight, this looks like a barometer glitch or bad calibration at power-up rather than an actual altitude excursion, but it's worth confirming before trusting altitude-hold on a longer flight. Then at 0:04, the log recorded a hard-landing/impact event at 3.6 G, matching the peak acceleration of 3.58 G — this happened just 4 seconds after the altitude warning, suggesting the aircraft bounced or touched down hard very early in this short flight. Later, around 0:12-0:14, the attitude tilted to its steepest point (11°), the motor spread widened to 571 µs (0:13), and motor 2 hit its peak output of 1708 µs (0:14) — a wide, sustained spread like that usually means the mixer is fighting a constant asymmetry (uneven CG, a weak motor, or prop damage) rather than just normal correction.

Battery use was minimal (5 mAh, 0.1 Wh) but percentage dropped from 89.2% to 81.1% with a 0.79 V sag and a low point of 10.28 V at 0:16 — a bigger sag than the tiny energy draw would suggest, worth keeping an eye on if it repe

Detected flight events

1. 0s — Barometric and fused altitude disagree by 575 m

   Barometric and fused altitude disagree by 575 m

2. 4s — Impact or hard landing: 3.6 G

   Impact or hard landing: 3.6 G

3. 23s — Vehicle disarmed

   Motors disarmed — the flight is complete.