AF> Is lb/in^2/min the same as psi/min?
AF> psi usually measures pressure. For flow wouldn't you use volume? Shouldn't
AF> these be gpm or cc/second?
AF> Other wise how can you avoid confusing presure with flow? It is difficult
AF> when it comes in as a liquid and goes out as a gas and the rockets
AF> performance depends on velocity and mass of the exhaust gas. Upstream I think
AF> you must use volume for measuring flow.
>>>>>>>>>>>>>>>>>----<<<<<<<<<<<<<<<<<
AF> ........ Alex Fraser N3DER .........
AF> ......... [EMAIL PROTECTED] .......
[~]_>>^</\-[~]_>^</\-[~]_>^</\-[~]_>^<
In the expression [lb/in^2/min] [lb] is [lbm] (pound mass) not [lbf] (pound
force). With the unit [lb] one has always to be aware whether it stands for
mass or force. In metric units [N] stands for force and [Kg] stands
for mass so there is no ambiguity.
Hans Ulrich Ammann
mailto:[EMAIL PROTECTED]
http://www.spl.ch
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