REFLECTOR: Hydraulic Pump Leak..fluid levels

[Jerry.Brainard at anthem.com]

Let's not forget that if you make the reservoir a closed container that may
cause some issues as you climb and descend many thousands of feet.  I don't
think the pressure change would rupture or crush the reservoir, but it make
the leaks worse in a hurry.

-jerry




                                                                                                                                        
                      Alex Balic                                                                                                        
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                      12/14/2004 02:21                                                                                                  
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You are correct, I forgot to convert the diameter to radius on the
calculation for the rod - either way, I am not sure of the rod diameter but
it really does not have to be too large since it is acting in tension for
our application, so the difference in fluid level in the reservoir will be
approximately 1.1 oz for the main cylinder and maybe .5 oz for the nose-
not too large, but you definitely want the cap vented.
      -----Original Message-----
      From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]
      On Behalf Of HYTEC45 at aol.com
      Sent: Tuesday, December 14, 2004 12:10 PM
      To: reflector at tvbf.org
      Subject: Re: REFLECTOR: Hydraulic Pump Leak..fluid levels

      In a message dated 12/14/2004 8:51:16 AM Pacific Standard Time,
      ALVentures at cox.net writes:


               Just as a rough guess (not being at the aircraft this
             morning)  but if the main cyl is 1.5" diameter, and the rod is
             .375 diameter, then the difference would be  25% in both
             volume and power calculations- with a (another guess) stroke
             length of 18" this would be a difference of  4.4 oz of fluid-
             the nose cylinder probably adds another oz or so.


      FYI;
      1.5" equals 1.76 square inch, where as .375 equals .1104 square inch.
      (dia. squared X .7854).  This is a difference of less than 7%.

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