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Apollo network

Although the design of the Apollo network followed closely behind the Manned Space Flight Network (MSFN) modification for the Gemini program, many site modifications were necessary to provide Apollo support due to the greater scope of the Apollo program. The Apollo program requires instrumentation for support of the S-I, S-11, S IV-B/IU, Command Service Module (CSM) and Lunar Excursion Module (LEM) stages. Command Service Module (CSM) and Lunar Excursion Module (LEM) stages. Support must also be provided at both orbital and lunar distances. Increased data processing capability is required for processing and displaying significantly larger amounts of information. The ground network requires the capability of processing both Pulse Code Modulation (PCM) telemetry and command data for the CSM, LEM, and S IV-B/IU. In various stages of the Apollo program, both tone (on UHF) and digital [on Unified S-Band (USB) and UHF] command capabilities are required. Also at various stages both USB and VHF telemetry links are required.

Ground support system↗

Unified S-band system

Unified S-band system in Apollo network to provide tracking and communications to lunar distance

Spacecraft communications system↗

Apollo display system

Apollo display system permitting display of printed information and charts of real time data on cathode ray tube

Real time↗

CCIA-data call-up system for Apollo

Console Computer Interface Adapter (CCIA) to provide communication between flight control consoles and telemetry and command computers of Apollo network

Digital command system↗

Apollo remote site computer programming

Much has been written about the hardware to be used for Apollo mission support on the Manned Space Flight Network (MSFN). This article concerns itself with the software necessary to integrate hardware subsystems into a unique tool for mission control.

Computer programming↗