CSM Thruster Arrangement

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rk - 26 Jun 2004 00:47 GMT

Sometimes I find the picture more descriptive than the text.

http://users.erols.com/stellare/csm_thrusters.jpg

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rk, Just an OldEngineer
"Dealing properly with very rare events is one of the attributes that
distinguishes a design that is fit for safety-critical systems from one that
is not." -- John Rushby in "A Comparison of Bus Architectures for Safety-
Critical Embedded Systems," March 2003

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Charleston - 26 Jun 2004 01:29 GMT

> Sometimes I find the picture more descriptive than the text.
>
> http://users.erols.com/stellare/csm_thrusters.jpg

Um, LMAOROTF. I was just getting ready to put up a very similar drawing but
you beat me to it. I think I will still do it though because it shows the
power source assignments too.

Daniel

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LaDonna Wyss - 26 Jun 2004 13:34 GMT

> > Sometimes I find the picture more descriptive than the text.
> >
[quoted text clipped - 5 lines]
>
> Daniel

Good idea.

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Charleston - 26 Jun 2004 18:13 GMT

> > > Sometimes I find the picture more descriptive than the text.
> > >
[quoted text clipped - 5 lines]
>
> Good idea.

Thanks, nothing like a reference drawing to get everyone on the same page.

Okay, it is up on my site: www.challengerdisaster.com

with this link.

CM/SM RCS Quad location-Reference Axes

to this file.

http://www.challengerdisaster.info/cm_sm_rcs_engine_location_apollo_%20reference
_axes.jpg

Daniel

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P. Maxson - 27 Jun 2004 05:37 GMT

> > Um, LMAOROTF. I was just getting ready to put up a very similar drawing but
> > you beat me to it. I think I will still do it though because it shows the
[quoted text clipped - 3 lines]
>
> Good idea.

I have resized and renamed the file for you from Daniel's site (hope he doesn't mind)
it is now just a 6 character .jpg at 800x1211 and 145kb's rather than 1MB.

It is very readable. I sent it to your mail. Hope this helps the focus of the thread.

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LaDonna Wyss - 27 Jun 2004 16:12 GMT

> > > Um, LMAOROTF. I was just getting ready to put up a very similar drawing but
> > > you beat me to it. I think I will still do it though because it shows the
[quoted text clipped - 8 lines]
>
> It is very readable. I sent it to your mail. Hope this helps the focus of the thread.

Thanks, Paul. Actually, Daniel sent me an email late last night/this
morning giving me a page reference for that drawing. As soon as I
finish waking up I'll get it and then reply.
LaDonna

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Henry Spencer - 27 Jun 2004 16:34 GMT

>Sometimes I find the picture more descriptive than the text.
> http://users.erols.com/stellare/csm_thrusters.jpg

Incidentally, in case it's not obvious, the reason the arrangement was
rather asymmetrical is to keep the thrusters away from the hot airflow
during reentry. The capsule reentered tilted, and in the original design
the airflow was roughly parallel to the +Z side of the cone. The actual
tilt was somewhat less -- the capsule ended up being rather crowded and it
proved impossible to shift the center of mass far enough off-center to
achieve that much tilt -- but that side was still the hot side.

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"Think outside the box -- the box isn't our friend." | Henry Spencer
-- George Herbert | henry@spsystems.net

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LaDonna Wyss - 28 Jun 2004 00:40 GMT

> >Sometimes I find the picture more descriptive than the text.
> > http://users.erols.com/stellare/csm_thrusters.jpg
[quoted text clipped - 6 lines]
> proved impossible to shift the center of mass far enough off-center to
> achieve that much tilt -- but that side was still the hot side.

Thank you for this. Charleston and I had this "discussion" this
morning via email. You're correct.
LaDonna

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Scott Hedrick - 28 Jun 2004 13:11 GMT

>You're correct.

He's *Henry Spencer*- it goes without saying that he's correct.

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Greg D. Moore (Strider) - 28 Jun 2004 23:24 GMT

> >You're correct.
>
> He's *Henry Spencer*- it goes without saying that he's correct.

If it goes without saying, is that how Henry gets to Dictionopolis?

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OM - 29 Jun 2004 02:03 GMT

On Mon, 28 Jun 2004 22:24:52 GMT, "Greg D. Moore \(Strider\)"
<mooregr_deleteth1s@greenms.com> wrote:

>If it goes without saying, is that how Henry gets to Dictionopolis?

Q: How does Henry get to Dictionopolis?

A: Correctly, man, correctly!

OM

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Space Forum / Space History / June 2004

CSM Thruster Arrangement