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From: Walter Atkinson <walter@advancedpilot.com>
Subject: Re: [LML] Connectors
X-Original-Date: Mon, 2 Jan 2006 10:37:05 -0600
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Rob:

My good friend and four-mission shuttle astronaut, Jay Apt described=20
the ascent as "an eight hundred pound, really mad gorilla shaking you=20
as hard as he can."  I had the honor of flying the SMS-1 with Chief=20
Astronaut, Charlie Precourt as my copilot and I can agree.  It is=20
violent.  The shaking comes from the solid rocket boosters.  At=20
approximately 2:09 into the flight, the SRBs are jettisoned and the=20
main engines are as smooth as electric motors.  You can read about it=20
at <http://www.avweb.com/news/usedacft/181561-1.html>.  It was quite an=20=

experience.

Walter


On Jan 1, 2006, at 9:53 PM, RWolf99@aol.com wrote:


Greyhawk writes --
=A0
<<Spacecraft just don't shake like a four-cylinder engine.>>
=A0
Actually, it is much, much worse.=A0 Not on orbit, of course, but on the=20=

rocket ride up there.=A0 I have witnessed vibration testing to the=20
spectrum which these things are qualified -- it makes our prehistoric=20
4-bangers seem as smooth as turbines.=A0 Roll your stereo down a long=20
flight of stairs and you'll begin to get a feeling for what spacecraft=20=

have to survive.
=A0
I asked the electronics guys at work (Aviation Technology Group, makers=20=

of the Javelin Jet) which connectors I should use.=A0 They (very=20
apologetically) told me that the MS38999 connectors were the only way=20
to go.=A0 They know these are the expensive ones -- these guys used to=20=

work on kitplanes as well and know where we're coming from.=A0 They told=20=

me that I was going to be spending a pile of money on connectors but=20
that it would be money well spent for reliability.
=A0
It's basically the same thing that Brent is saying -- cheap connectors=20=

are false economy.=A0 Use the good ones, and you'll be paying so much =
for=20
them that you'll only install them where you really need them.
=A0
I do not know if MS38999 connectors (known as "thirty-eight=20
triple-nine" connectors) are the same connectors as the AMP Circular=20
Plastic Connectors that Brent recommends.
=A0
- Rob Wolf=

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Rob:


My good friend and four-mission shuttle astronaut, Jay Apt described
the ascent as "an eight hundred pound, really mad gorilla shaking you
as hard as he can."  I had the honor of flying the SMS-1 with Chief
Astronaut, Charlie Precourt as my copilot and I can agree.  It is
violent.  The shaking comes from the solid rocket boosters.  At
approximately 2:09 into the flight, the SRBs are jettisoned and the
main engines are as smooth as electric motors.  You can read about it
at <<http://www.avweb.com/news/usedacft/181561-1.html>.  It was quite
an experience.


Walter



On Jan 1, 2006, at 9:53 PM, RWolf99@aol.com wrote:



<fontfamily><param>Arial</param><smaller>Greyhawk writes =
--</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>=A0</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller><<<<Spacecraft just don't
shake like a four-cylinder engine.>></smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>=A0</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>Actually, it is much, much
worse.=A0 Not on orbit, of course, but on the rocket ride up there.=A0 I
have witnessed vibration testing to the spectrum which these things
are qualified -- it makes our prehistoric 4-bangers seem as smooth as
turbines.=A0 Roll your stereo down a long flight of stairs and you'll
begin to get a feeling for what spacecraft have to =
survive.</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>=A0</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>I asked the electronics guys
at work (Aviation Technology Group, makers of the Javelin Jet) which
connectors I should use.=A0 They (very apologetically) told me that the
MS38999 connectors were the only way to go.=A0 They know these are the
expensive ones -- these guys used to work on kitplanes as well and
know where we're coming from.=A0 They told me that I was going to be
spending a pile of money on connectors but that it would be money well
spent for reliability.</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>=A0</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>It's basically the same thing
that Brent is saying -- cheap connectors are false economy.=A0 Use the
good ones, and you'll be paying so much for them that you'll only
install them where you really need them.</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>=A0</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>I do not know if MS38999
connectors (known as "thirty-eight triple-nine" connectors) are the
same connectors as the AMP Circular Plastic Connectors that Brent
recommends.</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>=A0</smaller></fontfamily>

<fontfamily><param>Arial</param><smaller>- Rob =
Wolf</smaller></fontfamily>=

--Apple-Mail-2--1001164647--