Author Topic: NASA Mission Control in the Apollo era  (Read 786 times)

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Offline AlbertLTopic starter

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NASA Mission Control in the Apollo era
« on: May 04, 2020, 11:56:38 pm »
A couple of great articles with lots of details.  In the first, the writer visits the restored Mission Operations Control Room, accompanied by Seymour “Sy” Liebergot, an EECOM controller on eight Apollo missions (including 11 and 13; you can hear him on the Apollo 13 audio mentioned earlier):
<https://arstechnica.com/science/2012/10/going-boldly-what-it-was-like-to-be-an-apollo-flight-controller/>

And this article describes the functions of each MOCR console position:
<https://arstechnica.com/science/2019/12/apollo-flight-controller-101-every-console-explained/>

This NASA film, “This Is Mission Control”, gives some really interesting details on the organization and duties of the various flight controller positions at Mission Control, and shows the people and equipment behind the scenes of the Mission Operations Control Room, which was the tip of the iceberg in terms of the vast amount of people and equipment at the center.  The last part focuses on how it all worked during the Apollo 13 crisis:   
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Offline TomS_

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Re: NASA Mission Control in the Apollo era
« Reply #1 on: May 06, 2020, 10:37:48 am »
Really interesting video. Amazing how much computing power there was behind the scenes at the time.
 

Offline Tomorokoshi

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Re: NASA Mission Control in the Apollo era
« Reply #2 on: May 06, 2020, 01:15:28 pm »
I have Sy Liebergot's book, "Apollo EECOM: Journey of a Lifetime". Interesting inside view.

Dig the hep background music!
 

Offline AlbertLTopic starter

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Re: NASA Mission Control in the Apollo era
« Reply #3 on: May 07, 2020, 02:47:57 am »
One interesting piece of information from these sources is that the CRT displays at the controllers’ consoles did not directly display computer output.  They were CCTV monitors, displaying an image from a camera.   The camera viewed an optical system which superimposed a 35mm slide containing data headings over a mainframe computer CRT display which showed just the raw numbers.  The Mission Control film says the system had 40 TV channels and 600 slides.

Imagine the work involved just to add or move a data field on a particular screen.  The mainframe programming would have to be modified to put the data in the correct place on the correct CRT display layout, the headings would be have to be changed on the slide artwork, the slide would have to be created photographically and loaded into the display system.  All of those tasks would have been done by different specialists, and it all would have to be coordinated and checked - it would not be good to mix up, say the O2 Tank #1 Pressure and the H2 Tank #3 Pressure fields on a controller’s display!
 


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