[ARC5] Fw: Screw failure

[COWARD,JAY (A-SanJose,ex1)]

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-----Original Message-----
From: COWARD,JAY (A-SanJose,ex1) <jay_coward@agilent.com>
To: 'arc5@mailman.qth.com' <arc5@mailman.qth.com>
Sent: Fri Mar 08 20:54:53 2002
Subject: Screw failure

Hello folks,
 It seems that most of us have run across the screw heads popping off with
minimal torque applied.I think that expansion coefficints may play a part in
this failure mode.Consider a piece of gear mounted in a new airplane sitting
on the tarmac all day long in the North African desert.Temp is 115+degF. Sun
sets.Temp drops to say 42~F.(on a warm night).Airplane sits for two weeks
and is then slated for a mission.At 15000 ft altitude its maybe -10degF. The
missions go on and off for the next two weeks.The war ends.Airplane sits for
18 months on a forgotten bit of real estate in a land that may even have a
new name by now, cycleing hot and cold day after day.Airplane crated and
shipped back to U.S. and sits somewhere in the So.West waiting to be turned
into Beer and Coke and Pepsi cans.Someone somewhere desides to pull the
useable parts out before the airframe gets chopped and smelted.Out pops our
hero ARC-5 and he is bursting at the seems just to be free!
 No wonder the screw heads pop off!
 Sure,most of what we have is NOS or just OS or even O, but there are a few
pieces of gear out there that actually got to fly upside down,something I
don't want to do!Look at these old pieces and imagine the gals who
assembled,tested,boxed, and then shipped them off all over the world.How
many are still intact wrapped in the foil bag at the bottom of the Atlantic
and Pacific oceans?And not just our heroic command sets.Our country
literally poured war material to the point that if a shippment was lost at
sea, it did not hinder the war effort.We saved the human race (and for
what?The ACLU has destroyed all that America stands for.Rights are
earned,not just given) because we could manufacture and deliver the material
needed to do the job.That is the true American legacy.
 Now the goal is to make it all somewhere else where the people don't matter
and the profits are magnatudes greater than if we made it at "home".
 Sad.
What would it cost to manufacture an ARC-5 tx today?And where would you make
it?
      Jay
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