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A twist of the tail in turning maneuvers of bird-inspired drones
A banked turn is a common flight maneuver observed in birds and aircraft. To initiate the turn, whereas traditional aircraft rely on the wing ailerons, most birds use a variety of asymmetric wing-morphing control techniques to roll their bodies and thus redirect the lift vector to the direction of the turn. Nevertheless, when searching for prey, soaring raptors execute steady banked turns without exhibiting observable wing movements apart from the tail twisting around the body axis. Although tail twisting can compensate for adverse yaw, functioning similarly to the vertical tail in aircraft, how raptors use only tail twisting to perform banked turns is still not well understood. Here, we developed and used a raptor-inspired feathered drone to find that the proximity of the tail to the wings causes asymmetric wing-induced flows over the twisted tail and thus lift asymmetry, resulting in both roll and yaw moments sufficient to coordinate banked turns. Moreover, twisting the tail induces a nose-up pitch moment that increases the angle of attack of the wings, thereby generating more lift to compensate for losses caused by the banking motion. Flight experiments confirm the effectiveness of tail twist to control not only low-speed steady banked turns but also high-speed sharp turns by means of coordinated tail twist and pitch with asymmetric wing shape morphing. These findings contribute to the understanding of avian flight behaviors that are difficult to study in controlled laboratory settings and provide effective control strategies for agile drones with morphing aerial surfaces.
Check it out: www.science.org/doi/10.1126/scirobotics.ado3890
Reference: Hoang-Vu Phan, Dario Floreano, A twist of the tail in turning maneuvers of bird-inspired drones. Sci. Robot. 9, eado3890(2024). DOI:10.1126/scirobotics.ado3890
มุมมอง: 6 980

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ความคิดเห็น

  • @dustinlackey4250
    @dustinlackey4250 12 ชั่วโมงที่ผ่านมา

    This further proves that birds aren’t real

  • @tonbopro
    @tonbopro 16 ชั่วโมงที่ผ่านมา

    propellor says its not a bird

  • @mackymacintyre9563
    @mackymacintyre9563 วันที่ผ่านมา

    This is already made, japan had these prototypes a couple yrs back ,

  • @mikemafdom3864
    @mikemafdom3864 วันที่ผ่านมา

    Awesome ❤

  • @wallaguest1
    @wallaguest1 2 วันที่ผ่านมา

    amazing

  • @jamesgoudy9580
    @jamesgoudy9580 2 วันที่ผ่านมา

    da Vinci observed and drew these behaviors, I think he would have loved to be part of this project

  • @BobBlarneystone
    @BobBlarneystone 2 วันที่ผ่านมา

    Interesting. Hmm, there's an old Popular Science or Mechanics article that describes a rubber-band powered model plane that used turkey feathers for the wings and empennage. The lift of the feathered wings was far better than conventional materials of that time.

  • @1creeperbomb
    @1creeperbomb 2 วันที่ผ่านมา

    This is cool stuff, I always wonder how it would compare to a typical rc drone. Would be sick to an upsize version capable of staying afloat with only gliding.

  • @devrim-oguz
    @devrim-oguz 2 วันที่ผ่านมา

    This would actually be great for planes if it can be simplified

  • @tank-eleven
    @tank-eleven 2 วันที่ผ่านมา

    looks fun but probably a conventional airplane wing is already way more efficient than this, by a magnitude

  • @josephseale254
    @josephseale254 2 วันที่ผ่านมา

    I was thinking hard along those lines, sometime around 1978. I lacked the software tools to get into the details shown here, but I did do a fairly decent approximation-analysis of flapping efficiency and the induced drag generated by the flapping variation in lift. A key, both for sinusoidal time-varying symmetric lift distributions (flapping) and antisymmetric lift distributions (wing shape-shifting for roll and yaw) is an extension of the familiar analysis of the elliptic lift distribution: an ellipse is the lowest-order Lissajous figure, and the analysis extends to parametric equations where x = sin(theta) and y = cos(n*theta) or sin(n*theta) and those are your Fourier-like components of lift vs span. You get nice analytic induced wake-flow solutions for some very interesting cases. Between the math and hours of watching gulls soar over the Atlantic-wind-facing cliffs of Norway, I analyzed and just intuited much of the flight control dynamics presented here. Sadly, I never found the time and occasion (no support from an institution) to publish these results. Anyway, kudos to the people now doing this work!

  • @Fogmeister
    @Fogmeister 3 วันที่ผ่านมา

    Birds get thrust from a propeller?!? Who knew?! 😂 Looks great! When it’s controlling itself in the air it looks almost alive.

  • @Eldrich4291
    @Eldrich4291 3 วันที่ผ่านมา

    I thought the government has made these for years?

  • @xayord9818
    @xayord9818 3 วันที่ผ่านมา

    omg love it

  • @shaider1982
    @shaider1982 3 วันที่ผ่านมา

    Scale it up for those awesome Atreides Orthinopters

  • @eduardodaquiljr9637
    @eduardodaquiljr9637 3 วันที่ผ่านมา

    We have almost the same concept,In reality the outermost of the wing create. remarkable lift that improves efficiency.

  • @depralexcrimson
    @depralexcrimson 3 วันที่ผ่านมา

    looks sick

  • @dorjedriftwood2731
    @dorjedriftwood2731 3 วันที่ผ่านมา

    Wow incredible

  • @henkdevries2971
    @henkdevries2971 3 วันที่ผ่านมา

    Awesome!

  • @UsmanSarwar-l4r
    @UsmanSarwar-l4r 3 วันที่ผ่านมา

    Why i left Christianity th-cam.com/video/I_btCVYm1IA/w-d-xo.htmlsi=QGcon4vNi3omCTUV And th-cam.com/video/SdyyNimjYCs/w-d-xo.htmlsi=vFbcuRhXeHww9yEf

  • @UsmanSarwar-l4r
    @UsmanSarwar-l4r 3 วันที่ผ่านมา

    Why i left Christianity th-cam.com/video/I_btCVYm1IA/w-d-xo.htmlsi=QGcon4vNi3omCTUV And th-cam.com/video/SdyyNimjYCs/w-d-xo.htmlsi=vFbcuRhXeHww9yEf

  • @kueacybtguicyregfibubkueacybax
    @kueacybtguicyregfibubkueacybax 3 วันที่ผ่านมา

    Horizon forbidden west here we come

  • @PIERREGERARD-zc2iq
    @PIERREGERARD-zc2iq 3 วันที่ผ่านมา

    in English if you dont speak a word a French... : en.wikipedia.org/wiki/Hirsch_H.100

  • @PIERREGERARD-zc2iq
    @PIERREGERARD-zc2iq 3 วันที่ผ่านมา

    THIS HAS ALREADY BE INVENTED BY ING. Mr RENE HIRSH IN FRANCE SINCE 1954 : fr.wikipedia.org/wiki/Hirsch_H-100

  • @ΟμηροςΚασερης
    @ΟμηροςΚασερης 3 วันที่ผ่านมา

    Ομηρος Κασερης the human size one is called ΤΕΧΝΟΠΤΕΡΑΚ

  • @johanliebert1027
    @johanliebert1027 3 วันที่ผ่านมา

    awww I wanted it to fly by flapping its wings but it has a propeller.

  • @Sherlock245
    @Sherlock245 3 วันที่ผ่านมา

    Evolution could not have design such a specimen 😮

    • @markdavis7397
      @markdavis7397 3 วันที่ผ่านมา

      🤦‍♂

    • @thomascharlton8545
      @thomascharlton8545 3 วันที่ผ่านมา

      Therefore?

    • @markdavis7397
      @markdavis7397 2 วันที่ผ่านมา

      @@thomascharlton8545 A random youtube troll doesn't understand something, therefore that is positive proof that it is magic. Got it. By that measure, my college thermodynamics class was magic, lol.

  • @kenkingsflyingmachines2382
    @kenkingsflyingmachines2382 3 วันที่ผ่านมา

    This is literally what I wanted to research myself, but I'm not a computer programmer, engineer, or aerodynamicist. Super cool!

  • @thatairplaneguy
    @thatairplaneguy 3 วันที่ผ่านมา

    This is awesome. As a glider pilot I’ve always been in awe of birds.

  • @abdbot2509
    @abdbot2509 3 วันที่ผ่านมา

    You are doing very nice, good job , good luck

  • @techbricks5300
    @techbricks5300 3 วันที่ผ่านมา

    This is extremely nice. Good work.

  • @pcguidelk
    @pcguidelk 4 วันที่ผ่านมา

    damn... a whole lot is gonna change in drone warfare and recon!

  • @mahsiseua
    @mahsiseua 4 วันที่ผ่านมา

    0:07 i realize the design still need rudder while real bird dont

    • @nassirnassir7286
      @nassirnassir7286 2 วันที่ผ่านมา

      To skip rudder they need to add wingtips bend

  • @NoobyWeeby
    @NoobyWeeby 4 วันที่ผ่านมา

    finally find the perfect reference for animation!!! THANK YOU!!! I racked my brain out wondering why and how bird is turn only using tail from all the references

    • @mattbrody3565
      @mattbrody3565 วันที่ผ่านมา

      The thing is, they kinda don't just use their tail. They use their wings more. Birds have a twisted shape to their wings which allows them to channel airflow under the wings out towards the wingtips, then redirect the flow behind them to produce little jets of air. Those jets give a little thrust, and they can tune the thrust by tuning the twist of their wings. Al Bowers did some good work on this with the Prandtl-D project for NASA. His presentations are here on YT.

    • @NoobyWeeby
      @NoobyWeeby วันที่ผ่านมา

      @@mattbrody3565 thats sick man! thanks a lot!! <3

  • @ericchristen2623
    @ericchristen2623 4 วันที่ผ่านมา

    Isnt NATURE brilliant? You can tinker for centuries toyboys but never get close.

  • @JaydenLawson
    @JaydenLawson 4 วันที่ผ่านมา

    Cool

  • @canetacosmica
    @canetacosmica 4 วันที่ผ่านมา

    parabens!

  • @Intelligence_Failure
    @Intelligence_Failure 4 วันที่ผ่านมา

    birds aren't real. >they< have been fooling everyone with fake birds for centuries, this tech is nothing.

  • @keybrent64
    @keybrent64 4 วันที่ผ่านมา

    More proof birds aren't real

  • @jaeholee3816
    @jaeholee3816 4 วันที่ผ่านมา

    remove vertical tail

  • @qq-uh2mx
    @qq-uh2mx 4 วันที่ผ่านมา

    Lick you bird and aircraft, and thisis your biggis hobby, this is fun give me more please.

  • @muditfatehpur7452
    @muditfatehpur7452 4 วันที่ผ่านมา

    bro this is soooo cool , no shit

  • @robieosborne7369
    @robieosborne7369 4 วันที่ผ่านมา

    Are you guys are using a transmitter and servos? I'm guessing 5 channels minimum? Maybe like 4 servos? Are you channel mixing?? This is all very cool!!

  • @robieosborne7369
    @robieosborne7369 4 วันที่ผ่านมา

    Is it compatible with a spektrum NX10?

  • @downwindone
    @downwindone 4 วันที่ผ่านมา

    I designed a 9m2 Kite and analysed the different states of flight equilibrium. You are in the right direction! Congratulations, i hope the best for your future developments!

  • @TaigiTWeseFormosanDiplomat
    @TaigiTWeseFormosanDiplomat 5 วันที่ผ่านมา

    😮

  • @KofiAsare0
    @KofiAsare0 5 วันที่ผ่านมา

    Incredible, what type of actuators were used?

    • @dekutree64
      @dekutree64 2 วันที่ผ่านมา

      Judging by the noise, just regular RC servos. Not much power needed for these motions.

  • @JenFlys
    @JenFlys 5 วันที่ผ่านมา

    Wow! I’m amazed the way is able to adjust itself so quickly to maintain it’s stationary (airborne) position.

  • @luiscarapito572
    @luiscarapito572 5 วันที่ผ่านมา

    Awesome for autonomous flight ...more efficiency...

  • @v.gedace1519
    @v.gedace1519 5 วันที่ผ่านมา

    I think I've just discovered a gap in the market that will make me rich, very rich! I'm going to sell sticks! ... because somehow every “advanced whatever” seems to have a need for them!