1965
Grand Tour Alignment Analysis
Identifies a rare outer-planet alignment that makes a multi-planet gravity-assist mission practical.
Historical place archive
Browse historical events and people recorded at Jet Propulsion Laboratory in United States of America. The records below are rendered directly from the World History Database into this page's initial HTML.
Identifies a rare outer-planet alignment that makes a multi-planet gravity-assist mission practical.
Identifies a rare outer-planet alignment enabling gravity-assist missions through Jupiter and beyond.
Leads development of the Mariner Jupiter-Saturn project as it evolves into the Voyager mission.
Becomes project scientist for the mission later known as Voyager.
Works on navigation planning for gravity-assist trajectories through the outer Solar System.
Voyager 1 completes near-Earth activities and begins its cruise toward Jupiter.
Mission design directs Voyager 1 close to Titan, a gravity assist that sends the spacecraft out of the planetary plane.
Mission planning commits Voyager 2 to the trajectory carrying it onward from Saturn to Uranus.
Supports extending Voyager 2 beyond Saturn toward Uranus after the successful primary planetary encounters.
Voyager 2 performs a major trajectory correction after Uranus to target its future Neptune encounter.
Voyager 2's wide-angle imaging camera is switched off after completion of its planetary photography.
The Voyager Interstellar Mission formally begins after completion of the spacecrafts' planetary encounters.
Voyager 1's imaging cameras are switched off after completion of the Solar System family portrait.
Voyager 2's photopolarimeter is switched off after degraded performance ends the experiment.
Voyager 1's infrared interferometer spectrometer is switched off to conserve limited electrical power.
Voyager 1's plasma science instrument is switched off after its performance becomes degraded.
Voyager 2's planetary radio astronomy experiment is switched off to conserve spacecraft power.
Becomes Voyager project manager and oversees operations as the twin spacecraft continue through the outer heliosphere.
Voyager 1's ultraviolet spectrometer is switched off as part of long-term power conservation.
Engineers successfully fire Voyager 1 trajectory-correction thrusters for the first time in thirty-seven years.
Directs power-management measures that preserve critical Voyager engineering and science operations as electrical output declines.
A command sequence inadvertently points Voyager 2's antenna away from Earth, interrupting normal communications.
Deep Space Network commands restore full communications with Voyager 2 after its antenna is realigned to Earth.
Voyager 1 stops returning readable science and engineering data after a flight-data-system memory problem.
A software-memory workaround restores usable Voyager 1 engineering data after five months of troubleshooting.
Voyager 1 resumes returning usable science data from all four instruments that were then operating.
Engineers switch Voyager 1 to a different thruster set to mitigate clogged propellant inlet tubes.
Engineers switch off Voyager 2's plasma science instrument to conserve the spacecraft's declining power.
Voyager 1's cosmic ray subsystem is switched off to preserve power for the remaining mission.
Engineers revive long-dormant Voyager 1 roll thrusters to provide a backup attitude-control option.
Engineers switch off Voyager 1's low-energy charged particle experiment to extend spacecraft operations.
Provenance
These entries are generated from stored World History Database records whose country and place fields match United States of America and Jet Propulsion Laboratory. Names, dates, event labels and descriptions are reviewed and normalised as the database develops. Historical place names may not match modern administrative boundaries.
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