How does a boomerang actually fly ?

Discussion in 'Hangar Flying' started by topspeed100, Jan 4, 2012.

Help Support HomeBuiltAirplanes Forum by donating:

  1. Jan 4, 2012 #1

    topspeed100

    topspeed100

    topspeed100

    Banned

    Joined:
    May 4, 2009
    Messages:
    4,063
    Likes Received:
    63
    Location:
    Oulu/Finland
    Could someone explain how " very primitively " appearing peoples weapon in fact work ?

    I somehow get the feeling it sorta pulls up and stalls after high speed part of the flight and gains momentum again when coming back..any idea how it was possibly conceived ?

    :ponder:
     
    Last edited: Jan 4, 2012
  2. Jan 4, 2012 #2

    topspeed100

    topspeed100

    topspeed100

    Banned

    Joined:
    May 4, 2009
    Messages:
    4,063
    Likes Received:
    63
    Location:
    Oulu/Finland
  3. Jan 4, 2012 #3

    ClippedCub

    ClippedCub

    ClippedCub

    Well-Known Member

    Joined:
    Jul 15, 2011
    Messages:
    105
    Likes Received:
    5
    Location:
    aa
    eom
     
    Last edited: Apr 16, 2012
  4. Jan 4, 2012 #4

    bmcj

    bmcj

    bmcj

    Well-Known Member HBA Supporter

    Joined:
    Apr 10, 2007
    Messages:
    12,835
    Likes Received:
    4,798
    Location:
    Fresno, California
    Hey, don't they ban members for corny jokes? :gig:
     
  5. Jan 5, 2012 #5

    Voyeurger

    Voyeurger

    Voyeurger

    Well-Known Member

    Joined:
    Oct 9, 2010
    Messages:
    612
    Likes Received:
    3
    Location:
    Northern Phoenix, Arizona, U.S.A.
    He was probably wondering, like I was once while sitting under a tree, why it seemed to be growing bigger and bigger. And then it struck me!
     
  6. Jan 5, 2012 #6

    ClippedCub

    ClippedCub

    ClippedCub

    Well-Known Member

    Joined:
    Jul 15, 2011
    Messages:
    105
    Likes Received:
    5
    Location:
    aa
    eom
     
    Last edited: Apr 16, 2012
  7. Jan 5, 2012 #7

    autoreply

    autoreply

    autoreply

    Moderator

    Joined:
    Jul 8, 2009
    Messages:
    10,732
    Likes Received:
    2,540
    Location:
    Rotterdam, Netherlands
    Members who dare to make corny jokes are banned to Siberia for 1 to 5 years.

    See it as an autoreply to unacceptable and inappropriate behavior ;)

    You could of course try to bribe a moderator/admin to avoid this horrific faith that's awaiting you. I can recommend Jake :gig:



    On a serious note, gyroscopic precession is why they work.
     
  8. Jan 5, 2012 #8

    ClippedCub

    ClippedCub

    ClippedCub

    Well-Known Member

    Joined:
    Jul 15, 2011
    Messages:
    105
    Likes Received:
    5
    Location:
    aa
    eom
     
    Last edited: Apr 16, 2012
  9. Jan 5, 2012 #9

    Jon Ferguson

    Jon Ferguson

    Jon Ferguson

    Well-Known Member

    Joined:
    Dec 15, 2011
    Messages:
    827
    Likes Received:
    382
    Location:
    Harpers Ferry, WV
    I have built a few boomerangs from scratch and read a number of books about them. Some believe that aborigines started out actually making a primitive hunting weapon called a killing stick. Often when they make killing sticks after carving they 'fire harden' the wood. It's something like primitive kiln drying but over a campfire. The theory is that during this 'fire hardening' process the 'wings' of the killing stick warped and created a very primitive propeller shape. The spinning motion over the wings causes it to create thrust which drives the weapon in a circle.

    As far as stalling goes all the aerodynamics rules that conventional aircraft adhere to are also true of the boomerang. If you toss it overhand (like a baseball) it will travel in an elliptical flight parallel to the horizon. If you toss it sidearm it will perform a loop. If you toss it with insufficient force it does eventually stall with spectacularly unpredictable effects.
     
  10. Jan 5, 2012 #10

    bmcj

    bmcj

    bmcj

    Well-Known Member HBA Supporter

    Joined:
    Apr 10, 2007
    Messages:
    12,835
    Likes Received:
    4,798
    Location:
    Fresno, California
    So, if you made a canard version of a boomerang, would it be stall resistant? :roll:
     
  11. Jan 5, 2012 #11

    SVSUSteve

    SVSUSteve

    SVSUSteve

    Well-Known Member

    Joined:
    Aug 21, 2007
    Messages:
    3,871
    Likes Received:
    925
    Location:
    Indianapolis, IN
    Give me five bucks and I'll tell you. How's that for a financial statement? ;)
     
  12. Jan 5, 2012 #12

    SVSUSteve

    SVSUSteve

    SVSUSteve

    Well-Known Member

    Joined:
    Aug 21, 2007
    Messages:
    3,871
    Likes Received:
    925
    Location:
    Indianapolis, IN
    "Paging Rutan, Mr. Burt Rutan..."
     
  13. Jan 5, 2012 #13

    Wagy59

    Wagy59

    Wagy59

    Well-Known Member

    Joined:
    Nov 25, 2011
    Messages:
    270
    Likes Received:
    5
    Location:
    Farmers Branch, Texas
    Somebody mentioned pullup....at least i think they did..maybe not...any way..It's gyroscopic procession that makes them pullup if you throw em flat or if you throw em the right way, assuming your right handed, they will go out straight for a bit and then make a hard left turn. I make boomerangs all the time I love the things...i normally sell em for 20 bucks but mostly give em away,,,everyone that sees them are amazed that I can crank one out from a piece of 1/4" birch plywood in 30 minutes and walk out and throw it and the silly thing comes right back at me...the fun is whether i try to catch it or duck..I took the women in my life out and gave them each a boomerang and we had the time of our lives,,,those girls are dangerous
    I've been told I should just spend my time making boomerangs since i can make them so quickly..everyone thinks they are beautiful just to look at..made my first one in 1975
     
  14. Jan 5, 2012 #14

    Wagy59

    Wagy59

    Wagy59

    Well-Known Member

    Joined:
    Nov 25, 2011
    Messages:
    270
    Likes Received:
    5
    Location:
    Farmers Branch, Texas
    And who knows about the stall!?...For years i thought it was the advancing blade that made then turn (or pitch up)..not so
     
  15. Jan 5, 2012 #15

    Wagy59

    Wagy59

    Wagy59

    Well-Known Member

    Joined:
    Nov 25, 2011
    Messages:
    270
    Likes Received:
    5
    Location:
    Farmers Branch, Texas
    That was great!
     
  16. Jan 5, 2012 #16

    SVSUSteve

    SVSUSteve

    SVSUSteve

    Well-Known Member

    Joined:
    Aug 21, 2007
    Messages:
    3,871
    Likes Received:
    925
    Location:
    Indianapolis, IN
    I'll take one. LOL
     
  17. Jan 5, 2012 #17

    Wagy59

    Wagy59

    Wagy59

    Well-Known Member

    Joined:
    Nov 25, 2011
    Messages:
    270
    Likes Received:
    5
    Location:
    Farmers Branch, Texas
    Give me your address and I'll mail one to ya
     
  18. Jan 5, 2012 #18

    Wagy59

    Wagy59

    Wagy59

    Well-Known Member

    Joined:
    Nov 25, 2011
    Messages:
    270
    Likes Received:
    5
    Location:
    Farmers Branch, Texas
    If you want more than one say so now...
     
  19. Jan 5, 2012 #19

    SVSUSteve

    SVSUSteve

    SVSUSteve

    Well-Known Member

    Joined:
    Aug 21, 2007
    Messages:
    3,871
    Likes Received:
    925
    Location:
    Indianapolis, IN
    If I could get a second one for my daughter, if it's not too much trouble, I would appreciate it.
     
  20. Jan 5, 2012 #20

    Wagy59

    Wagy59

    Wagy59

    Well-Known Member

    Joined:
    Nov 25, 2011
    Messages:
    270
    Likes Received:
    5
    Location:
    Farmers Branch, Texas
    Cool..I'll do it!
     

Share This Page

arrow_white