Alternative blower for blown wing

Discussion in 'Aircraft Design / Aerodynamics / New Technology' started by Sockmonkey, Aug 30, 2019.

Help Support HomeBuiltAirplanes Forum by donating:

  1. Aug 30, 2019 #1

    Sockmonkey

    Sockmonkey

    Sockmonkey

    Well-Known Member

    Joined:
    Apr 24, 2014
    Messages:
    1,657
    Likes Received:
    431
    Location:
    Flint, Mi, USA
    So, I'm sitting on the can thinking about how the usual ways of blowing wings kind of suck.
    The squirrel cage fans aren't efficient and rows of mini fans mean tons of parts.
    Consider the rotary vane compressor. You could extend one of those axially the full length of the wing but with better efficiency than the squirrel cage ones.
    Maybe.
    AFAIK you can run the things at high RPMs just fine.
    [​IMG]
    Might work well. Might not. Praise it or tear it up as you will.
     
  2. Aug 30, 2019 #2

    Dusan

    Dusan

    Dusan

    Well-Known Member

    Joined:
    Sep 15, 2014
    Messages:
    48
    Likes Received:
    9
    Location:
    Canada
    Might work if you solve the problem of the rotor to flex in unison to the wings. Build a model, let us know.

    If this works, your might...
     
  3. Aug 31, 2019 #3

    Sockmonkey

    Sockmonkey

    Sockmonkey

    Well-Known Member

    Joined:
    Apr 24, 2014
    Messages:
    1,657
    Likes Received:
    431
    Location:
    Flint, Mi, USA
    Flex could be solved by making the blower in two or three shorter sections. Or I could just shorten the wing to make it stiffer since a blowing the whole wing multiplies the lift.
     
  4. Aug 31, 2019 #4

    henryk

    henryk

    henryk

    Well-Known Member

    Joined:
    Mar 8, 2010
    Messages:
    4,714
    Likes Received:
    453
    Location:
    krakow,poland
    -look at VOLERIAN project...seems moore effective and silent!
     
  5. Aug 31, 2019 #5

    Aerowerx

    Aerowerx

    Aerowerx

    Well-Known Member

    Joined:
    Dec 1, 2011
    Messages:
    5,075
    Likes Received:
    1,386
    Location:
    Marion, Ohio
    I wonder how this compares to a normal propeller with the same power? To a ducted fan?
     
  6. Aug 31, 2019 #6

    Sockmonkey

    Sockmonkey

    Sockmonkey

    Well-Known Member

    Joined:
    Apr 24, 2014
    Messages:
    1,657
    Likes Received:
    431
    Location:
    Flint, Mi, USA
    I read about that one a while back. Have they got a flying test model yet?
    Certainly not as efficient as a single large prop, but maybe more efficient than other existing systems for USB lift.
     
    Last edited: Aug 31, 2019
    henryk likes this.
  7. Aug 31, 2019 #7

    henryk

    henryk

    henryk

    Well-Known Member

    Joined:
    Mar 8, 2010
    Messages:
    4,714
    Likes Received:
    453
    Location:
    krakow,poland
    -dr Sorokodum was achived >1000 N/kW thrust force on the simple fan,
    and anihilation of drag with scheme like VOLERIAN suppose !

    =much moore energyefficiant as propeller type...
     
  8. Aug 31, 2019 #8

    Sockmonkey

    Sockmonkey

    Sockmonkey

    Well-Known Member

    Joined:
    Apr 24, 2014
    Messages:
    1,657
    Likes Received:
    431
    Location:
    Flint, Mi, USA
    So far I've only seen the volerain running as a slow speed mock-up.
    They have calculations but I remain skeptical until I can see actual thrust measurements from it running at full speed.
     
    henryk likes this.
  9. Sep 1, 2019 #9

    henryk

    henryk

    henryk

    Well-Known Member

    Joined:
    Mar 8, 2010
    Messages:
    4,714
    Likes Received:
    453
    Location:
    krakow,poland
    -you are right,
    but it is (today) only right way to build mass flying cars...
    (LOW NOISE !!!)

    =another > 100 Firms trying this via propellers thrusters are on one way street.

    =hear bat in fly=ZERO wings noise...
     
  10. Sep 1, 2019 #10

    Sockmonkey

    Sockmonkey

    Sockmonkey

    Well-Known Member

    Joined:
    Apr 24, 2014
    Messages:
    1,657
    Likes Received:
    431
    Location:
    Flint, Mi, USA
    Bat wings are made of stretchy skin and don't flap nearly as fast as VTOL thrusters would have to though.
     
  11. Sep 1, 2019 #11

    henryk

    henryk

    henryk

    Well-Known Member

    Joined:
    Mar 8, 2010
    Messages:
    4,714
    Likes Received:
    453
    Location:
    krakow,poland
    =oscillating wings are generating proper vorticis...they construction can be different.



    >1:30...
     
  12. Sep 1, 2019 #12

    bmcj

    bmcj

    bmcj

    Well-Known Member HBA Supporter

    Joined:
    Apr 10, 2007
    Messages:
    12,962
    Likes Received:
    4,898
    Location:
    Fresno, California
    Slightly different, but similar in concept is the FanWing. I believe this particular design dates back to 2004.

    www.fanwing.com

     
  13. Sep 2, 2019 #13

    Sockmonkey

    Sockmonkey

    Sockmonkey

    Well-Known Member

    Joined:
    Apr 24, 2014
    Messages:
    1,657
    Likes Received:
    431
    Location:
    Flint, Mi, USA
    Yeah, the fan wing is the thing I'm hoping to replace with the vane pump, though it would work in a similar way.
     
  14. Sep 2, 2019 #14

    pictsidhe

    pictsidhe

    pictsidhe

    Well-Known Member

    Joined:
    Jul 15, 2014
    Messages:
    6,953
    Likes Received:
    1,915
    Location:
    North Carolina
    I think you'll have trouble building an efficient vane pump for this. You may be better building a twin screw type blower. No need for any contact. Though you'll have fun carving the screws.
     
  15. Sep 2, 2019 #15

    Sockmonkey

    Sockmonkey

    Sockmonkey

    Well-Known Member

    Joined:
    Apr 24, 2014
    Messages:
    1,657
    Likes Received:
    431
    Location:
    Flint, Mi, USA
    Yeah, it would have to be a two or three lobe blower that doesn't spiral.
     

Share This Page



arrow_white