January 2025: Page added which relates to the Command Subsystem, discussed is how upload requests of real time commands are initiated by EECOM in Mission Operations Control Room by using command panels on his console.
November 2024:
Four buttons added to the sitemap to make four pages accessible via the sitemap. These four pages contain detailed information related to the MOCR group displays, the mainframe IBM 360-75 of the RTCC, the MCC Command Subsystem and the Saturn V flight envelope.
Added some more information about the IBM 2075 CPU
November 2023:
Page added about the Command Subsystem (which is part of the MCC systems for mission management and control)
October 2023:
Update page about the MCC: an introduction to the Command Subsystem has been added. Page added containing the audio footages and the transcripts of the two speeches held by the late president John F. Kennedy in which he made the call for having a manned moon landing before 1970.
September 2023:
Update page about the MCC: a functional block diagram + comment have been added.
Update page about CCATS: a functional block diagram of the MCC and a context diagram of CCATS have been added.
Update page "Saturn IB and V Flight hardware": a list showing the assembly histories of fifteen Saturn V launch vehicles has been added.
August 2023:
Added small global diagram in page about the IBM 2075 CPU
July 2023:
Information about MOCR - RTCC voice loops added in page about the RTCC
Completed migration to another hosting provider. Domain name changed from home.kpn.nl to earlyspaceflight.nl
May 2023:
Update page about the RTCC
Information added about LCS management by the RTOS/360 and about the IBM 370/75 system control panel.
March 2023:
Updated page about the LCC: space utilization plans for the floors 1 and 2 have been added.
February 2023:
Updated page about the LCC: drawings concerning the floors 3 and 4 have been updated. Information about the Site Activation Control Center (SACC) in Firing Room 4 has been added. References have been added.
Added page about the Display Room in support of the Fring Room.
The information about the Display Room on the page about the LCC in general has been moved to this page.
January 2023:
Added information about the group displays and the computer-display/control interface system on the page about MOCR.
Page added to elaborate some about the MOCR Group Displays.
Added information about the rear projection setup in the Display Room on the page about the LCC.
September 2022:
Page added about the JSC Mission Simulation and Training Facility (Building 5) (MSTF)
May 2022:
Enhancement on the page about the F-1 engine ignition sequence: internal workings of the Control Valve and the Ignition Monitor Valve have been depicted globally in the drawings.
October 2021: Pictures in section 2c and 2d about the panel layout of the control consoles in the ACE-S/C Control Room have been subjected (and still are) to multiple iterations with the aim to eliminate the "unknowns" as much as possible.
September 2021:
Added a page to elaborate on the ACE-S/C Control Room.
Added 4 photos to page (MSOB) (prelaunch breakfast and Apollo 11 crew walkout)
June 2021:
Update of the pages about the Kennedy Space Centers' Flight Crew Training Building (FCTB) and the Manned Spaccecraft Operations Building (MSOB).
April 2021:
Added a page to show the relationship between the monitor & control equipment at the launch pad and the consoles in the Firing Room in the LCC and the Acceptance Checkout Equipment Room in the MSOB.
March 2021:
Pages added with information about Kennedy Space Centers' Flight Crew Training Building (FCTB), the Manned Spaccecraft Operations Building (MSOB) and the Acceptance Checkout Equipment (ACE) control rooms residing in the MSOB.
June 2020:
Pages added with information about Mission Control Centers' Staff Support Rooms (SSRs) and the Recovery Control Room (RCR).
May 2020:
Added information about JSC (Johnson Spaceflight Center) and KSC. (Kennedy Space Center)
Rearranged pages about MOCR (Mission Operations Control Room), RTCC (Real-Time Computer Complex) and CCATS (Communications Command and Telemetry System) to improve presentation of information.
An umbrella page has been added: MCC (Mission Control Center).
April 2020:
Pictures added of paper models of MOCR (1:25), the RTCC (1:25)(for now only an IBM 360) and the LCC FR (1:122).
May 2016:
Spaces have been removed from all file names to improve the accessibility of the website via deep links.
June 2013:
Added: brief description on the Saturn V flight envelopes and the abort modes during the ascent phase.
May 2012:
Added: description of the J-2 rocket engine ignition sequence.
August 2011:
Added: description and pictures of the F-1 rocket engine ignition sequence.
May 2011:
Pages on the Saturn IB and V Instrument Unit have been updated.
October 2008:
Pages on the Saturn IB and V Instrument Unit have been updated.
Copyright 2021 by Sander Panhuyzen Comments and questions are welcome. All pictures and drawings contained on and through these pages are the author's, unless otherwise noted. No unauthorized reproduction without permission.