PDA

View Full Version : Mass drive?

Jay V
May4-04, 04:09 PM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>Vibratory hammers use contra-rotating eccentric masses and can\ngenerate a centrifugal force of up to 4 000 kN. The maximum\ndisplacement amplitude can exceed 30 mm.\n\nhttp://www.geoforum.com/info/pileinfo/view_process.asp?ID=22\n\nIf you could brake the movement at 270 degrees (90 for the other\nrotor) where the counterrotating forces anyway cancles each other, and\naccelerate them at 90 degrees (270 for the other rotor). Wouldnt that\ngive a greater movement at 180 degrees than 0? If you built an array\nof couter routating pairs with a suitable offset, would you get a\n(almost) continous force?\n\nCan you restrict the forces to 2 vectors of different amplitude? Or\nmust they be equal to obey "the laws"?\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form">&nbsp;&nbsp;View this Usenet post in original ASCII form </a></div><P></jabberwocky>Vibratory hammers use contra-rotating eccentric masses and can
generate a centrifugal force of up to 4 000 kN. The maximum
displacement amplitude can exceed 30 mm.

http://www.geoforum.com/info/pileinfo/view_process.asp?ID=22

If you could brake the movement at 270 degrees (90 for the other
rotor) where the counterrotating forces anyway cancles each other, and
accelerate them at 90 degrees (270 for the other rotor). Wouldnt that
give a greater movement at 180 degrees than ? If you built an array
of couter routating pairs with a suitable offset, would you get a
(almost) continous force?

Can you restrict the forces to 2 vectors of different amplitude? Or
must they be equal to obey "the laws"?
Doug Goncz
May12-04, 05:22 PM
<jabberwocky><div class="vbmenu_control"><a href="jabberwocky:;" onClick="newWindow=window.open('','usenetCode','toolbar=no, location=no,scrollbars=yes,resizable=yes,status=no ,width=650,height=400'); newWindow.document.write('<HTML><HEAD><TITLE>Usenet ASCII</TITLE></HEAD><BODY topmargin=0 leftmargin=0 BGCOLOR=#F1F1F1><table border=0 width=625><td bgcolor=midnightblue><font color=#F1F1F1>This Usenet message\'s original ASCII form: </font></td></tr><tr><td width=449><br><br><font face=courier><UL><PRE>Dear Jay,\n\nI can build this model for you to test your concept, but I can save you some\ntime by saying that one out of ten of my customers has the same idea, and\nwithout an arm fully constrained at infinite distance and of no mass,\ninfinitely stiff, extending to the apparatus, angular momentum cannot be\nconverted into linear momentum.\n\n&gt;http://www.geoforum.com/info/pileinfo/view_process.asp?ID=22\n\nNow if you were going to invent a _personal_ vibrator with independently\nvariable frequency and amplitude, I\'d be on you like gravy on rice. That\'s an\neminently salable product, and the ground vibrator shown in the link could be\nminiaturized.\n\nI charge double expenses and nothing for my time, and I keep the tools and\nmaterials purchased.\n\n\nYours,\n\nDoug Goncz ( ftp://users.aol.com/DGoncz/ )\n\nRead about my physics project at NVCC:\nhttp://groups.google.com/groups?q=dgoncz&scoring=d plus\n"bicycle", "fluorescent", "inverter", "flywheel", "ultracapacitor", etc.\nin the search box\n\n</UL></PRE></font></td></tr></table></BODY><HTML>');"> <IMG SRC=/images/buttons/ip.gif BORDER=0 ALIGN=CENTER ALT="View this Usenet post in original ASCII form">&nbsp;&nbsp;View this Usenet post in original ASCII form </a></div><P></jabberwocky>Dear Jay,

I can build this model for you to test your concept, but I can save you some
time by saying that one out of ten of my customers has the same idea, and
without an arm fully constrained at infinite distance and of no mass,
infinitely stiff, extending to the apparatus, angular momentum cannot be
converted into linear momentum.

>http://www.geoforum.com/info/pileinfo/view_process.asp?ID=22

Now if you were going to invent a _personal_ vibrator with independently
variable frequency and amplitude, I'd be on you like gravy on rice. That's an
eminently salable product, and the ground vibrator shown in the link could be
miniaturized.

I charge double expenses and nothing for my time, and I keep the tools and
materials purchased.


Yours,

Doug Goncz ( ftp://users.aol.com/DGoncz/ )

Read about my physics project at NVCC:
http://groups.google.com/groups?q=dgoncz&scoring=d plus
"bicycle", "fluorescent", "inverter", "flywheel", "ultracapacitor", etc.
in the search box