Илим жана Технология

Coanda Effect Drone Propulsion

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  1. Deceneu


    3 саат мурун

    Could try to build them more apart as the currents can interact with one another in a negative way

  2. bolt crack

    bolt crack

    Күн мурун

    No seria posible llenar con helio la pieza roja para disminuir el peso. Eso podria ayudar a minimizar el gasto de energia.

  3. Christopher Elven

    Christopher Elven

    4 күн мурун

    What kept going through my head was what if you modified the shape of the bowl? I don't have the science to know if it would make a difference, but I was surprised that he never tried that, just to see.

  4. Isik Kuntay

    Isik Kuntay

    5 күн мурун

    This is such a brilliant experiment!!! Could you please try making holes for air to flow under the impeller? That way air will be sucked in. This might make a parachute effect!

  5. Skerblash


    6 күн мурун

    it sounds like a siren

  6. RadRich


    6 күн мурун

    I have to admit, this video is not as neat of an idea as the thumbnail portrayed it to look..

  7. mjeolsiespsha Black

    mjeolsiespsha Black

    7 күн мурун

    put the blower wheel inside the bowl not on top of it joe jetpackl

  8. SKIP L Goebel

    SKIP L Goebel

    8 күн мурун

    needs volutes integrated into the dome

  9. SKIP L Goebel

    SKIP L Goebel

    8 күн мурун

    2 piece dome. brilliant!

  10. Marcelo Maia Rocha

    Marcelo Maia Rocha

    9 күн мурун

    The domes could be filled with helium... smaller trust would be required.

    • Kai


      Күн мурун

      I also thought this, i think its a great idea honestly, might make it a little less reactive though

  11. Steve Holt

    Steve Holt

    11 күн мурун

    Hi Tom, can you build one of these ? kgkey.info/block/x2KJfLCVpqR4zKA/video.html

  12. Gabriel Jack

    Gabriel Jack

    11 күн мурун

    Couldn't you have 3D printed it in a single piece if you printed it upside down? It would be basically just be printing a bowl...

  13. The S Word

    The S Word

    12 күн мурун


  14. The S Word

    The S Word

    12 күн мурун

    What if those impellers were a similar shape to the bowls and were facing downwards as the bowl does and were fed with a vortex manifold and/or exhaust.

  15. MARK WON


    13 күн мурун

    This is a nice make... I was thinking; less curve inwards toward the bottom of the bowl structures... Or using vortex generators to increase the effect... Or a blend of both... Thanks for the video

  16. cliff woodbury

    cliff woodbury

    13 күн мурун

    damn this is amazing - i had never heard of this

  17. mike wilber

    mike wilber

    14 күн мурун

    Put the motors inside the. Cups for ing the air up and then down the inside,creating ,lament flow....

  18. Charles Ashurst

    Charles Ashurst

    15 күн мурун

    How about having the dome open at the top and having the impeller inside?

  19. mau lwong fang

    mau lwong fang

    15 күн мурун

    good job, i have an idea i think you could enjoy, because your machine looks like an ufo, what if you try to use some tesla field over it?, i am ansiouly too see.......

  20. Jeff Schwager

    Jeff Schwager

    15 күн мурун

    You experimented with the different blades but you didn't try different shapes and sizes of the domes and it may be that the curve of the domes is not optimal for maximum thrust downward.

  21. Ron Mallari

    Ron Mallari

    16 күн мурун

    I like your video, just a suggestion, what if you make a big hole in the center of the dome and install or gradually elevated the impeller inside the hole for each test to catch the reflected air and to push downward so more lift is generated but lesser battery energy used, might reduce the coanda effect for each test, just guessing? Again, I enjoy your video, thanks. :)

  22. Tree


    16 күн мурун

    The drone sounds like a shity air raid siren

  23. Stevie Hoblyn

    Stevie Hoblyn

    17 күн мурун

    I think your very close to something amazing with this, don't give up

  24. Gerry M

    Gerry M

    20 күн мурун

    Maybe the domes curves are too steep. Just a thought

  25. LordZabuza


    20 күн мурун

    Two of the impellers need to be reversed

  26. Cameron Gill

    Cameron Gill

    21 күн мурун

    Install the impellers under the dome with an opening in the top

  27. Dr. Be

    Dr. Be

    22 күн мурун

    YT has a secret heaven for rarities such as these who refuse to fk us over with their stupid taste in muse sick.. where's the 'love' button?

  28. Sol


    23 күн мурун

    I think that while the conventional propellors would be useful in making it a regular ol drone, the ground effect you get from the scoops might help it be miles more energy efficient by flying it in the ground effect

  29. J Jones

    J Jones

    23 күн мурун

    This is an awesome example of experimental engineering. Sure, it didn't result in a faster, more efficient, or better drone, but it WAS an interesting exploration of using the coanda effect. Experimentation and sharing what you learn benefits us all. Cheers, thanks, and keep thinking outside of the box and trying new things! Thumbs-up!

  30. Shahroz Mirza

    Shahroz Mirza

    23 күн мурун

    I think you missed the basic with your design... Give space between propeller and dome....

  31. enigma


    26 күн мурун

    Try using dual shaft motors and put impellers inside the "bowls" so you get more efficiency.

  32. preslav jankov

    preslav jankov

    26 күн мурун

    have you try to make little curves at the end of the red and to fly mush stabel like at the airplane wings

  33. Sid Nunja

    Sid Nunja

    26 күн мурун

    This was awesome. This is a guy who could make a drone out of coconuts

  34. Arnold Bailey

    Arnold Bailey

    27 күн мурун

    Print the dome upside down. No support needed.

  35. Valen Tino

    Valen Tino

    27 күн мурун

    Great work and a sense of humor in the 3D printing example in Simplify3D))) I'm glad that you practically found out for yourself why, for example, the AVRO disk project only flew above the ground. In fact, the Coanda effect is minimal (basically not at all) and everything is provided by the so-called "ground effect".

  36. Josef Brožek

    Josef Brožek

    28 күн мурун

    Absolutely interesting, inspiring and I believe it has a real application.

  37. Martin Peniak

    Martin Peniak

    28 күн мурун

    Interesting test, you've invented a propeller muffler hehe

  38. Maanhaar Jackal

    Maanhaar Jackal

    28 күн мурун

    Did you fly the green props WITHOUT the bowls?

  39. Martin D

    Martin D

    29 күн мурун

    Emoji :-)

  40. Dr. Ramon de Torres

    Dr. Ramon de Torres

    Ай мурун

    How are your salad bowls under a standard propeller better than if you removed the salad bowls and just used propellors?



    Ай мурун

    TOM STANTON ..I have a unique design to be used in a drone..will you have look at the patent-pending design and do a 3d print for a video

  42. James Merkel

    James Merkel

    Ай мурун

    a 1 string 6 balloon hat moveable float drone w/decent payload cloud car.

  43. James Merkel

    James Merkel

    Ай мурун

    U need to b able to cant the hats out a few degs or inward a few degs to really see what u hve got. A mesh hat w/thin tape will b far lighter cloud car. Hving helium filled ballon made of Mylar under each hat will negate the extra wt, for your hover cloud car. Each hat u add say 6 has more helium lift payload advantage over normal drone.

  44. James Merkel

    James Merkel

    Ай мурун

    use curved prop not straight prop so more surface area but not much added wt or larger diameter of spinning blade. Like a curved sword better than straight sword. Copy the 3 blades of best boomerang shape.

  45. James Merkel

    James Merkel

    Ай мурун

    star wars cloud car. cut out golf ball size hole of each propeller hat on each face of dome to lighten load Add a flip up edge to bottom of each hat so u get most bang for buck/effect. Try mesh dome instead of solid dome on the next 1. U can always seal up the mesh w/thin sheet of plastic or sticky tape.

  46. Clive Mitchell

    Clive Mitchell

    Ай мурун

    I think the bowls have the wrong shape as the near-circular curve creates a stall condition. Also, the airflow from each bowl interferes with those of the others and increases pressure at ground level which reduces the airflow. As the craft rises, the airflow at the bowl edges increases and drags air from under the bowl sucking the craft down. I suspect you would be better off having an aerodynamic cross section (i.e. the upper surface of a wing) at a reasonable angle of attack fixed some way above the vehicle like a helicopter's rotor. Put them much further apart and maybe launch from the top of a pole.

  47. Martin Biribauer

    Martin Biribauer

    Ай мурун

    To me, it looks like the uplift comes more from traditional airflow, than coanda-factor. Also, I'd expect a lot of interference between the domes = at least 1.5x the diameter of the domes in between them would look plausible to me?!? On the other hand, big domes also give sensitivity to wind from all sides and needs more counter-steering than "default" multicopters and limit speed (ok, speed is not necessarily the goal) But I like the different approaches of the "impeller" designs (well, these are not really impellers per definition) - one of the few real sense-making uses of 3D-printing I have seen so far. Anyhow: Impressive and we are curious, what effective solutions this development might bring!

  48. Parker E

    Parker E

    Ай мурун

    Is there any practical application of this? Or is it literally just a pretty funky looking way to reroute airflow.

  49. Richy Rich

    Richy Rich

    Ай мурун

    The original impellers were set too high for a dome with such a sharp angle change. You need to set them lower, possibly within a hole or indentation in the top of the dome, so that all of the air has to be funneled around the curve. Make the domes more toroidal in shape?

  50. D. STAHL

    D. STAHL

    Ай мурун

    Put the fans inside the Cubs instaed of in top

  51. D. STAHL

    D. STAHL

    Ай мурун

    It would fly better without it because of the weight added

  52. Paul Powell

    Paul Powell

    Ай мурун

    Thinking they are too close to one another creating too much interference

  53. IQ Boats

    IQ Boats

    Ай мурун

    The shape of the orange balls is wrong

  54. jrcampen


    Ай мурун

    tunning for rock solid stability may be a chalange since the props need to have m/s speed thrust responce adjustment to keep stability?

  55. José Santos

    José Santos

    Ай мурун

    It's safer than common drones.

  56. Jim Germann

    Jim Germann

    Ай мурун

    Like your videos. you're really good at 3d printing. If you sink the original impellers so that they blow air across inside of the bells then you would gain extra lift through directional thrust and entrainment, just a thought from kgkey.info/block/w4COgpu6pambk2U/video.html electric aircraft designer( around 4min in)

  57. Peter 24

    Peter 24

    Ай мурун

    Dude ... You just improved the auto industry O.o ... This idea would easily lead to flying cars faster .... Jesus .. No , don't get me wrong .. This idea if taken by an entrepreneur soon an applied in the industry .. My God ! I have the picture of the car in my head already .. I only wish i could show it somewhere to someone who gives a fuck about it . Funds are insuficient tho' .. That's the only bummer :/

  58. Charles


    Ай мурун

    It appears with the dome over the motor, the cooling effect of air flow is removed as the motors are shield from the air flow by the domes.

  59. Jari Kosonen

    Jari Kosonen

    Ай мурун

    Maybe its flying due to the "suction" of the turbines rather than coanda effect? Test by placing a plate under the turbines?

  60. rogersdodgerz


    Ай мурун

    I was trying to figure this out to take the pressure off of a savonius rotor windmill, the 2 bearings that hold it.

  61. Hossie Haile

    Hossie Haile

    Ай мурун

    You could flip it up side down and print it. Buy Bitcoin before it is too late.

  62. GRooVe MaKeR

    GRooVe MaKeR

    Ай мурун

    flaws are obvious in the dome shape. way too wide.

  63. digysol


    Ай мурун

    Try a small ducted fan instead of propeller

  64. shortermozzie


    Ай мурун

    the drone concept would make a really good hovercraft

  65. AdmV0rl0n


    Ай мурун

    I.... was under an impression that one of the requirements for better thrust was that in addition to the blades pulling air info the system - that there should be additional airflow pulled in by the inbound air - a bit like a turbojet that has a hot section, but also a cold outer area that flows. Unless there is an affect that draws in a decent extra level, hard to see how it will ever elevate above the base thrust of the prop (and in the wider sense this is the challenge of those who propose coanda effect propulsion for flight..) I think the prop flow needs to go down, into the dome, round a corner, draw in extra air, and then flow back up and round the outer surface. The additional air flow pulled in from some form of hole below the dome (which.... would create a lower air pressure below/in dome).. Right now... that drone looks more like its lift is from the upward drive of the blades, rather than being lifted by coanda effect over the surface of the dome.. Fun experiment all the same!!

  66. Not Feelin' Too Good, Myself

    Not Feelin' Too Good, Myself

    Ай мурун

    Use the printed parts for forms to lay up parts with lighter construction and think on rotor to dome diameter ratio effects on volume/vector of air. Each new approach needs to exploit propeller/rotor design parameters, as well as dome shape. With so many variables you will need more bench work and testing.

  67. rafis117


    Ай мурун

    The Avrocar had pretty similar performance! They were hoping to build the “jeep of the air” which flew on the Coanda effect, but they never flew out of the ground effect.

  68. Tim Tim

    Tim Tim

    Ай мурун

    Traditional propellers are good. Why should you use domes at all? They are obstacles in front of the air flow. Strange idea. So mush power loss.

  69. Rafael Torrales

    Rafael Torrales

    Ай мурун

    Thanks for sharing your experiments, they are inspiring

  70. Christopher Ellis

    Christopher Ellis

    Ай мурун

    Henri Coandă has a street named after him in Timişoara 🇹🇩 |two syllables, not three. | Kwan dõ| 콴

  71. bobbymac1947


    Ай мурун

    wonder how it would do on mars?

  72. Илья Иванов

    Илья Иванов

    Ай мурун


  73. Cantankerous


    Ай мурун

    So the issue there was air flow. I think if you were to make the impellers larger so they could draw mora air you may have an easier time getting it up

  74. Carmine Bastevole

    Carmine Bastevole

    Ай мурун

    what if u made a vortex blade insted of that boble shape

  75. i i

    i i

    Ай мурун

    My dude can't pronounce words with R at the end, but he nails that r on COANDAR.

  76. derek starkjr

    derek starkjr

    Ай мурун

    Use 2 blades ? 1 propeller and 1 Impeller ? 2Q 4 U. Aloha :o

  77. Jessica Griffin

    Jessica Griffin

    Ай мурун

    I would suggest the squirrel blades but putting a cone with a hole in the center to put over it. Which will push more air down words

  78. Maria Dolores

    Maria Dolores

    Ай мурун

    Does anyone see a star wars vehicle in four turbine jet hover craft

  79. Maria Dolores

    Maria Dolores

    Ай мурун

    That looks difficult

  80. Ameya Singru

    Ameya Singru

    Ай мурун

    Try making an amphibian vehicle that might be future of travel 🤩

  81. shubham saboo

    shubham saboo

    Ай мурун

    Just print the dome upside-down like a bowl

  82. grant stinson

    grant stinson

    Ай мурун

    Shape the dome as an air foil

  83. diogenes koolaid

    diogenes koolaid

    Ай мурун

    sooo, you took a "regular" drone that could lift off with probably 20% power to a coanda effect drone that needs 100% power just to get off the ground. insert slow clap here. but seriously I applaud the effort and talent you demonstrated trying this. it's too bad it isn't more efficient because it sure looks cool.

  84. Leonard Schönfeldt

    Leonard Schönfeldt

    Ай мурун

    Could you please build an industrial 3D printed robotic arm. Like those who asemble cars and other stuff

  85. Pete Nikolic

    Pete Nikolic

    Ай мурун

    Wix has got to be possibly the WORST web site building site i have ever had the misfortune to attempt to use

  86. Karl Hulse

    Karl Hulse

    Ай мурун

    Could have tried vented props to draw air in from the top then alter the size of the gap just above the bowls to squeeze the air through.

  87. Fatih Sarıarslan

    Fatih Sarıarslan

    Ай мурун

    What if you cover domes with layer so air will flow faster? Like jet engines

  88. Caleb Weldon

    Caleb Weldon

    Ай мурун

    The ground effect part is cool. Would love to see a rc ground effect vehicle

  89. rollmeister


    Ай мурун

    The air screw is the most efficient way for thrust.

  90. Pete Miller

    Pete Miller

    Ай мурун

    Good video Tom. Your initial thrust tests basically predicted the outcome. I imagine the Coanda effect loses efficiency since there must be an outward thrust component, and not all of the thrust is directed downwards as it the case with a propeller. You might want to revisit this with redesigning the bowls into a similar shape as the Dyson fan, which is based on the same principle. Cheers from Canada.

  91. General Vee

    General Vee

    Ай мурун

    I don't think the drone flew due to thrust, but rather due to the suction power of the propellers. Just a thought. I'm not an engineer.

  92. GrooveHole


    Ай мурун

    Physics are so so awesome!

  93. Owen DeLong

    Owen DeLong

    Ай мурун

    Why not just print the dome upside down?

  94. T-2902


    Ай мурун

    Since you already have rounded shapes in the design, I wonder if you could fill them with hot air or helium, heated by the motors. It wouldn't affect the aerodynamics especially at the slow speeds, but it would decrease the weight.

  95. Max Byrd’s Marvelous Musical Museum

    Max Byrd’s Marvelous Musical Museum

    Ай мурун

    I bet your neighbors love you😂



    Ай мурун

    did u know that Henri Coanda is one of the most pillars in aviation, I don't remember what he did but I know this.

  97. Роман Ерофеев

    Роман Ерофеев

    Ай мурун

    Дел на минуту, а на 16 минут болтовни

  98. Ashvin Lakshmikantha

    Ashvin Lakshmikantha

    Ай мурун

    Given that the effect causes thrust to drop down 10x, is there a better use for this effect (like thrust vectoring)? Use conventional propellers for normal operations, but use the effect for thrust vectoring for finer control

  99. The Fixer

    The Fixer

    Ай мурун

    Charge the surface of the domes p on top n on bottom.

  100. Ray Oshima

    Ray Oshima

    Ай мурун

    You have all you lift basically in the ground effect thrust.