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  Apollo CM Flight Director/Attitude Indicator

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Author Topic:   Apollo CM Flight Director/Attitude Indicator
BJWest
Member

Posts: 34
From: San Francisco, CA 94110
Registered: Feb 2010

posted 02-09-2010 07:42 PM     Click Here to See the Profile for BJWest   Click Here to Email BJWest     Edit/Delete Message   Reply w/Quote
Hey folks. I've been lurking here for some time, but this is my first post.

I wanted to share with you the cherry in my collection, an Apollo Block 1 Command Module Flight Director/Attitude Indicator.

I picked it up on eBay a few years back. I assume it was used in a simulator rather than flown. It's a beaut on the outside, but on the inside, it's a work of art.

BJWest
Member

Posts: 34
From: San Francisco, CA 94110
Registered: Feb 2010

posted 02-09-2010 07:48 PM     Click Here to See the Profile for BJWest   Click Here to Email BJWest     Edit/Delete Message   Reply w/Quote

A closeup of the deeply engraved ball:

And a shot of the tag in case anyone is curious:

freshspot
Member

Posts: 287
From: Lexington, MA, USA
Registered: Dec 2005

posted 02-10-2010 07:22 PM     Click Here to See the Profile for freshspot   Click Here to Email freshspot     Edit/Delete Message   Reply w/Quote
Looks great. Thanks for sharing.

Dave Scott (not the astronaut)
www.apolloartifacts.com

space1
Member

Posts: 556
From: Danville, Ohio, USA
Registered: Dec 2002

posted 02-10-2010 08:23 PM     Click Here to See the Profile for space1   Click Here to Email space1     Edit/Delete Message   Reply w/Quote
These mechanical wonders are as much art as engineering. Thanks for the nice photos.

------------------
John Fongheiser
President
Historic Space Systems, http://www.space1.com

BJWest
Member

Posts: 34
From: San Francisco, CA 94110
Registered: Feb 2010

posted 02-11-2010 10:04 AM     Click Here to See the Profile for BJWest   Click Here to Email BJWest     Edit/Delete Message   Reply w/Quote
Yeah, they really are. Today's digital devices are astounding technologically, but to me they just don't have the same beauty as the old analog tech.

------------------
B.J. West
http://www.BJWest.net
http://www.KelpEntertainment.com

Jay Chladek
Member

Posts: 2267
From: Bellevue, NE, USA
Registered: Aug 2007

posted 02-11-2010 09:23 PM     Click Here to See the Profile for Jay Chladek   Click Here to Email Jay Chladek     Edit/Delete Message   Reply w/Quote
Look out man, you are getting awfully close to gimball lock!

Just kidding, very nice piece for your collection there. I recall the eight ball gave a lot of headaches to the designers until they came up with a design that would work in Apollo.

music_space
Member

Posts: 1067
From: Canada
Registered: Jul 2001

posted 02-12-2010 02:58 AM     Click Here to See the Profile for music_space   Click Here to Email music_space     Edit/Delete Message   Reply w/Quote
Beautiful, beautiful!

------------------
Francois Guay
Collector of litterature, notebooks, equipment and memories!

garymilgrom
Member

Posts: 1731
From: Atlanta, GA, USA
Registered: Feb 2007

posted 02-12-2010 06:48 AM     Click Here to See the Profile for garymilgrom   Click Here to Email garymilgrom     Edit/Delete Message   Reply w/Quote
Does the red area around the pole signify gimbal lock?

minipci
Member

Posts: 226
From: London, UK
Registered: Jul 2009

posted 02-12-2010 07:10 AM     Click Here to See the Profile for minipci     Edit/Delete Message   Reply w/Quote
Yes, according to the info on page 32 of this PDF available from NTRS, the red area is a Gimbal Lock Region.

music_space
Member

Posts: 1067
From: Canada
Registered: Jul 2001

posted 02-12-2010 01:13 PM     Click Here to See the Profile for music_space   Click Here to Email music_space     Edit/Delete Message   Reply w/Quote
Yeah, and contrary to what Jay is saying, we're far from gimbal lock, about 90° away.

BJWest
Member

Posts: 34
From: San Francisco, CA 94110
Registered: Feb 2010

posted 02-16-2010 02:41 PM     Click Here to See the Profile for BJWest   Click Here to Email BJWest     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by music_space:
Yeah, and contrary to what Jay is saying, we're far from gimbal lock, about 90° away.
Heh. It depends on which picture you are looking at. In the first two pics, it's getting very close. In the sixth pic, you are absolutely right!

Because it's visually interesting, I was gently turning the ball to show the gimbal lock warning spot in each photo. When I did, I could feel many gears whirring inside the ball! I'd love to see what all is going on in there, but I'm not brave enough to take the FDAI apart any further than I already have.

All times are CT (US)

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