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Thread: Is This What Brown-Out Looks Like?

  1. #1

    Is This What Brown-Out Looks Like?

    I left the entire video in case there was some telemetry before the crash that is important, but the relevant incident occurs at 6:05 or so

    [video=youtube;Igwf0505Ej0]

    https://youtu.be/Igwf0505Ej0


    Setup:
    • EZOSD
    • EZUHF - Set to high power
    • Immersion 8ch Diversity RX
    • Delta
      • 2x servos control surfaces
      • 2x servos pan/tilt
      • CG set too far forward and needed to keep up input applied


    I left the entire video in case there was some telemetry before the crash that is important, but the relevant incident occurs at 6:05 or so.

    The plane seemed to bank left and then spiral to the ground not responding to TX input. I though perhaps:


    • Brown out and the servos stopped responding due to lack of power
      • But, I think the throttle responded when current goes to almost zero a few seconds before impact
      • I remember killing throttle after the dive, but I'm not sure when. Could this throttle response be the RX recovering from brown out?

    • Left wing came off
      • But in the shadow on the ground it looks like the wing is still there... After it hit the ground it wasn't

    • Signal interferance
      • Link quality seems very strong the entire flight
      • I'm not exactly sure how to read the RSSI



    I think brown out is the probably culprit, but I am not confident.

    • I am running my camera from channel 8 on the RX
      • I am not sure what the amperage limitations of the RX are, but I'm getting a 5V stepdown to power the camera from another location.

    • If there was a brown out that was caused by the camera wouldn't the video be interrupted?



    Thanks for your insight!
    Last edited by RunningDeer; 29th August 2016 at 07:17 PM.

  2. #2
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    wow that was crazy man

  3. #3
    Co-Pilot Håvard Støre's Avatar
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    It looks a lot like a regular tipstall/spin, (usually to the left) but since I don't know the airframe its just a suggestion.

    How did you power your RX? External Bec or ESC Bec?

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