Mars Pathfinder Director's Logs, ACE Logs, and Command Request Forms Collection, 1996-1998.

ArchivalResource

Cook, Richard. Mars Pathfinder Director's Logs, ACE Logs, and Command Request Forms Collection, 1996-1998.

Mars Pathfinder Director's Logs, ACE Logs, and Command Request Forms Collection, 1996-1998.

http://www.worldcat.org/oclc/733102137

The documents in the collection are arranged in four series: Flight Director's Logs, ACE Logs, Reference Documentation, and Command Request Forms. The Flight Director's (or Flight Engineer's) Logs consist of handwritten notes and computer printouts describing activities, communications, spacecraft events, and problems, along with the time of occurrence of each. Some of the typical spacecraft communications recorded in the Flight Director's Log are setting cruise parameters, taking instrument readings, and monitoring power status. These logs are important for the purposes of accurately controlling flight in real time, as well as providing a troubleshooting tool and historical record. Also included in the logs are the names of the Flight Engineers, stating the duration of his or her shift. The ACE Logs are similar to the Flight Director's Logs, but are primarily handwritten and contain much more detail concerning Space Flight Operations Facility (SFOF) activities and problems. "ACE" is the call sign used for the Mission Controller. The Mission Controller, or ACE, monitors the ground data system and the spacecraft during periods when the Deep Space Network is tracking the spacecraft. The Reference Documentation includes checklists, a problem log, telemetry and downlink log books. The Command Request Forms (CRF's) in the collection relate to days 4 through 61 of the mission after landing on Mars. The CRF's provided the name of each Flight Engineer who was requesting authorization to send commands to the spacecraft or rover, whether the command was verified in the Test Bed, the authorization of the Mission Director, and the time the command was sent to the spacecraft or rover by the Flight Controller. Also included are printouts of the command code transmitted, as well as Sequence of Events logs. The Command Request Forms are grouped by Sols. A Sol is a Martian day, the equivalent of 24.66 Earth hours.

4.2 cubic ft. (74 folders)

Jet Propulsion Laboratory Library and Archives