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Automatic recovery from propeller loss (video)

Discussion in 'General Discussion' started by jflyer3, Dec 11, 2014.

  1. jflyer3

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    Perhaps this technology will make it into the next Phantom…

    http://video.techbriefs.com/video/Autom ... gorithm-Al

    Overview:

    If a quadrocopter loses a propeller, it can no longer control its flight with the normal control software, and may crash in a public area. Researchers at the Swiss Federal Institute of Technology in Zurich (ETH Zurich) have now developed a failsafe technology that makes quadrocopters safer and may thus pave the way for these vehicles to be used in safety-critical applications.
     
    Pumpfixer likes this.
  2. LandYachtMedia

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    A similar control mode is available in the DJI controllers when using 6 or 8 motors.

    Doing that with a quad as heavily loaded as the Phantom platform will be more of a challenge. To get the body spinning will take longer and you'll see a much larger loss of altitude before control is regained.

    That is why for safety critical applications you'll want a minimum of 6 motors and ideally 8.
     
  3. PhantomFanatic

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    Although I prefer the term "rotor" over propeller, this is a good system, that might eliminate or greatly reduces damage.

    Thanks for sharing!

    And when I roll my own, I hope for 8 rotors.
     
  4. derrickduff

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  5. SteveMann

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    My 3DR hex will land safely after losing one prop. It happened to me, but the hex is using 12-inch CF props and carrying more load than the Phantom. I haven't heard of any Phantom crashes from a lost prop or motor - usually battery exhaustion.
     
  6. Damon

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    Bad motor resulting in prop spin off right here! Fell like a tumbling rock. The most "intelligent" landing protocol - straight down ;)
     
  7. The Editor

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    You're right... it would be great to have this in all future quads but for something like the Phantom you would need a huge power increase at the time of failure and the inertia involved in 'getting it spinning' would be enormous.

    The technology/algorithms for this have been around for ages (even that video was posted over a year ago) but as yet haven't made it into mainstream production.

    Redundancy was one of the main reasons I elected to go the Hexacopter route. I have also added a two bus power distribution system into my hex rather than a standard parallel connector so that should one of the lipo packs fail or a solder joint or battery connector break or come loose I will still be able to fly and maintain full voltage until I can safely land (albeit with reduced mah capacity).

    Yes... I'm **** about safety with a 3.5 kilo flying chainsaw in the air :lol:
     
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