On Thu, 5 Sep 2002, Hans Ulrich Ammann wrote:
> ...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.
Except, of course, that there are a depressing number of old (and even
not-so-old) publications which measure force in kg...
If one is talking about propellant flow per unit area and one must use
barbarous units :-), one should quote in lb/s/in^2, not lb/in^2/s.
Henry Spencer
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