Concrete Glider

Discussion in 'Aviation' started by Velius, Oct 24, 2007.

  1. Velius

    Velius Member

    Joined:
    Sep 4, 2007
    Messages:
    263
    Likes Received:
    0
    Trophy Points:
    16
    Occupation:
    "Mechanical installer" is my official title- a fancy way of saying that I work on A/C structures.
    Location:
    Central Texas
    For those that watch Mythbusters, there was an episode (episode 66) where they experimented in making a concrete glider. Unfortunatley I don't have cable so I couldn't see this :(:( :(

    When I searched online to find a video clip (which BTW I had no luck in) I happened to stumble upon a page that says:

    "Also, an expert noted that making a glider out of concrete is possible and that the Germans experimented with the idea during World War II." (MythBusters Episode 66: "Concrete Glider")

    I tried finding evidence or documentation of such experiments and couldn't find anything. Can anyone help me out here?
    Thanks!8)
     
  2. Velius

    Velius Member

    Joined:
    Sep 4, 2007
    Messages:
    263
    Likes Received:
    0
    Trophy Points:
    16
    Occupation:
    "Mechanical installer" is my official title- a fancy way of saying that I work on A/C structures.
    Location:
    Central Texas
    <crickets chirp>

    Wow- nothing :| I guess this thread is dead
     
  3. Thorlifter

    Thorlifter Well-Known Member

    Joined:
    Jun 10, 2004
    Messages:
    7,905
    Likes Received:
    189
    Trophy Points:
    63
    Occupation:
    IT Nerd
    Location:
    Dallas, Tx Jubail, Saudi Arabia
    I don't know of one and me doing a search for 1 minute couldn't find anything. However, the results of the mythbuster's experiment was it was plausible, but very dangerous. Adam's glider flew for 34 feet but Jamie's took a nose dive.
     
  4. ccheese

    ccheese Member In Perpetuity
    Staff Member Moderator

    Joined:
    Jul 10, 2007
    Messages:
    12,669
    Likes Received:
    96
    Trophy Points:
    48
    Occupation:
    R E T I R E D !!
    Location:
    Virginia Beach, Va.
    If concrete ships can float, why can't concrete gliders fly ?

    I missed that episode, too. But I did see the one about the
    lead balloon.

    Charles
     
  5. Velius

    Velius Member

    Joined:
    Sep 4, 2007
    Messages:
    263
    Likes Received:
    0
    Trophy Points:
    16
    Occupation:
    "Mechanical installer" is my official title- a fancy way of saying that I work on A/C structures.
    Location:
    Central Texas
    I did a small search myself and didn't find anything. I wonder where mythbusters got that peice of info?
     
  6. red admiral

    red admiral Member

    Joined:
    Mar 24, 2005
    Messages:
    479
    Likes Received:
    3
    Trophy Points:
    18
    Blohm Voss BV 246 Glide Bomb Luft '46 Entry

    That would be this, the Blohm and Voss 246 glide bomb. Steel reinforced concrete was used because it was cheap and easy to manufacture. It would glide but is worse off than using wood or say aluminium when regards to weight. Also concrete cracking in weather extremes might be a problem.
     
  7. Velius

    Velius Member

    Joined:
    Sep 4, 2007
    Messages:
    263
    Likes Received:
    0
    Trophy Points:
    16
    Occupation:
    "Mechanical installer" is my official title- a fancy way of saying that I work on A/C structures.
    Location:
    Central Texas
    So just the wings were made of "Die-cast concrete"?

    I wonder what they mean by "Die-Cast"?
     
  8. Velius

    Velius Member

    Joined:
    Sep 4, 2007
    Messages:
    263
    Likes Received:
    0
    Trophy Points:
    16
    Occupation:
    "Mechanical installer" is my official title- a fancy way of saying that I work on A/C structures.
    Location:
    Central Texas
    Oh, good find BTW, thanks!
     
  9. orion549

    orion549 Member

    Joined:
    Jan 16, 2008
    Messages:
    35
    Likes Received:
    0
    Trophy Points:
    6
    It was found a plausible, but I doubt it was ever pursued much past the experimental stage.

    And for the record, not only can Concrete gliders fly and Concrete ships float, but also, Concrete cars can drive! One of my favourite pieces of Canadian trivia. Those crazy east-coasters and their concrete cars... ;)
     
  10. red admiral

    red admiral Member

    Joined:
    Mar 24, 2005
    Messages:
    479
    Likes Received:
    3
    Trophy Points:
    18
    There are two steel (IIRC) reinforcement bars down the middle of the wing acting as spars. Then the concrete is cast around them by injecting it whilst fluid into the die. The concrete then hardens and is machined to get smoother surface finish.

    Theres currently a lot of research into concrete submersibles as concrete has very high compressive strength.
     
  11. Graeme

    Graeme Well-Known Member

    Joined:
    May 31, 2007
    Messages:
    2,716
    Likes Received:
    166
    Trophy Points:
    63
    Gender:
    Male
  12. Velius

    Velius Member

    Joined:
    Sep 4, 2007
    Messages:
    263
    Likes Received:
    0
    Trophy Points:
    16
    Occupation:
    "Mechanical installer" is my official title- a fancy way of saying that I work on A/C structures.
    Location:
    Central Texas
    I'm getting the impression that the wings are solid. I can't help but think that such wings could crack easily, reinforced or not. I wonder if such an idea was considered for piloted aircraft or just for unmanned gliders?
     
  13. red admiral

    red admiral Member

    Joined:
    Mar 24, 2005
    Messages:
    479
    Likes Received:
    3
    Trophy Points:
    18
    The wings are completely solid, made from cast concrete. Its ok for an expendable glide bomber that just needs to fall from the sky in an inexpensive way. For a reusable piloted aircraft, concrete is a really really bad choice.
     
  14. Velius

    Velius Member

    Joined:
    Sep 4, 2007
    Messages:
    263
    Likes Received:
    0
    Trophy Points:
    16
    Occupation:
    "Mechanical installer" is my official title- a fancy way of saying that I work on A/C structures.
    Location:
    Central Texas
    I thought the same. :lol:

    Thanks for all the info everyone 8)
     
  15. Glider

    Glider Well-Known Member

    Joined:
    Apr 23, 2005
    Messages:
    6,160
    Likes Received:
    128
    Trophy Points:
    63
    Gender:
    Male
    Occupation:
    Consellor
    Location:
    Lincolnshire
    No way would you get me inside something like that and I don't care what the Maths said.
     
Loading...
Similar Threads
  1. mauld
    Replies:
    0
    Views:
    581
  2. andy2012
    Replies:
    2
    Views:
    758
  3. sunny91
    Replies:
    1
    Views:
    811
  4. Maestro
    Replies:
    27
    Views:
    3,629
  5. v2
    Replies:
    3
    Views:
    2,327

Share This Page