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Force Versus Distance of a Pneumatic
By John A. Tuttle

Hi All,  Back in March, 1996, there was a series of postings in MMD
about how the force of a simple pneumatic varies with the opening.
In one of the postings, Robbie wrote, "I'd like very much to read the
articles in AMICA Bulletin that you mention. Can someone help me
obtain them?"

Terry Smythe later wrote, "So far, I have not found the articles John
speaks of, but I did find some interesting articles by David Saul,
an engineer who's been a member longer (1969) than I."

Well, as it so happens, I was trying to find definitive information to
prove my long-held belief that the power curve of a striker pneumatic
is non-linear, and I believe I found the article that Robbie wanted and
that Terry was unable to find at that time. (I don't know if Terry ever
found the article, but there was no further mention of the discussion
in the MMD Archives that I could find.)

The title of the article is "A Contribution to the Theory of Striker
Pneumatics", which was written by Peter Brown and appeared in the
Jan/Feb 95 AMICA Bulletin. In the article, Peter explains in great
detail how he replicated the experiments of Dr. Hickman. Unless I'm
mistaken, Figure 4 in the article clearly indicates that the power
curve is quite non-linear. If I'm wrong, please correct me.


John A Tuttle
Brick, New Jersey, USA [delete ".geentroep" to reply]

 [ Peter W. Brown: "A Contribution to the Theory of Striker Pneumatics",
 [ The AMICA Bulletin, Vol. 32, No. 1, pp. 6-10, January/February, 1995

 [ Thanks for telling us about Peter Brown's analysis, John.  I'll ask
 [ AMICA for permission to re-publish the article on the MMD web site.
 [ The previous MMDigest articles on this subject are indexed at
 [  -- Robbie

(Message sent Tue 3 Nov 2020, 23:50:25 GMT, from time zone GMT-0800.)

Key Words in Subject:  Distance, Force, Pneumatic, Versus

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