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Posted by Ray on March 8, 2008, 7:47 pm
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On Fri, 7 Mar 2008 15:16:36 -0800 (PST), Cheshire Steve
>
>> Ray
>> The volume of a pizza of thickness 'a' and radius 'z' is given by pi*z*z*a.
>
>Ray,
>
>Love the equation for the pizza,
I forgot where I pinched it from and it's getting boring now.
>but was surprised to hear about this
>being referred to as the Siemens drive, and I am also not sure if the
>correct term is swashplate as I thought that had a sliding angled
>plate, whereas this more of a wobbler.
>
<snipped very interesting stuff>
I'm not sure either. Mr Urwick called it a nutator, attributing the basis
of the idea to Siemens' work.
The Green engine has perhaps a slightly novel feature in that the cylinder
block itself moves in a cone-like motion, obviating the need for jointed
connecting rods. The cable looks a bit like a Hillman Imp gearshift rod
coupling.
A step further might be to rotate the block with the shaft as in Rexroth
bent axis hydraulic pumps.
http://www.animatedsoftware.com/pumpglos/bentaxis.htm
Some models offer variable capacity by straightening out the bend. Porting
appears to be simple by comparison :)
--
Ray
Cognito ergo sum - I think I think, therefore I may be. (R Robinson)
Cognito ergo product - I think, therefore I multiply.
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