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Gun question

  1. May 4, 2007 #1
    I am trying to remember the rumor I heard about a new gun shooting design in one of my ap physics class discussions, do you guys now of any new breakthrough designs?

    anyway i think it has to do with the reloading mechanism. (I know I have asked a question of this type before, so if i sound stupid, please bear with me and at least just answer my question) If the recoil of a shooting bullet were to exert force on a wheel, would the result be EXACTLY the same as a regular gun? thanx for reading
     
  2. jcsd
  3. May 4, 2007 #2

    cristo

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    What do you mean by "exert a force on a wheel"? What wheel are you talking about? You will have to be more specific!
     
  4. May 4, 2007 #3
    Recoil exerting force on a wheel? Sounds like a just an old semi-automatic revolver. A newer idea is something like electronic triggering (think the product is called metal storm), or electromagnetic firing (like the railguns intended for Navy vessels).
     
  5. May 4, 2007 #4

    Danger

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    Actually, I'm rather worried that he's referring to some stupid thing that we spent 20 pages debunking in one of the engineering threads. I can't even remember what it's called, but we determined that it would have to be powered by a jet engine and would tear itself to pieces within a couple of seconds.
     
  6. May 6, 2007 #5
    to cesiumfrog: Well, I am not asking about the actual performance of the shot, just the reloading process. If you think of the revolver as perpendicular (bullet--reloader wheel), I am trying to ask about a parallel design so that the bullet recoil is oriented on the finned wheel in such a way that its recoil will spin it.

    to Danger: jet engine? tear itself to pieces? eh? It was actually related to a question I had in this same section, Classical Physics. What is your tennis court quote referencing?
     
  7. May 6, 2007 #6

    Danger

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    I found the thing; it's called DREAD. Here you go: "https://www.physicsforums.com/showthread.php?t=66613&highlight=weapon+spinning+disk+jet+engine+cnetrifugal+force" [Broken]

    The signature quote refers to the time I parked a Cessna 150 in somebody's back yard. (It was a big yard.)
     
    Last edited by a moderator: Apr 22, 2017 at 5:23 PM
  8. May 6, 2007 #7
    A very practical "electric gun" I've seen involved a rotor sandwiched between engraved tracks. Once it spins up, ball bearings introduced near the axis are flung out and hence fired forward. But the design has intrinsic problems: necessarilly spherical projectiles (the aerodynamics of which will limit accuracy) and an effective flywheel (difficulty reorientating a spinning gyroscope will further limit aiming). The DREAD thing looks similar at first glance.
     
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