{"dataset":{"slug":"operations-functions","title":"Operations Functions","description":"The functions of mission operations — mission control, flight dynamics, navigation, telemetry, fault protection, and the operations lifecycle.","version":"1.0.0","lastGenerated":"2026-06-29","license":"CC BY-SA 4.0","entityCount":16,"sources":["nasa","esa"]},"entities":[{"id":"operations_function:command-sequencing","name":"Command Sequencing","type":"operations_function","domain":"science","description":"Building and validating the time-ordered lists of commands a spacecraft executes, often days or weeks in advance, and uplinking them through the ground network.","entryPath":"/mission-operations/command-sequencing"},{"id":"operations_function:cruise-operations","name":"Cruise Operations","type":"operations_function","domain":"science","description":"The long interplanetary-cruise phase — keeping the spacecraft healthy, performing trajectory-correction manoeuvres, and preparing for arrival.","entryPath":"/mission-operations/cruise-operations"},{"id":"operations_function:end-of-mission-operations","name":"End-of-Mission Operations","type":"operations_function","domain":"science","description":"The final phase — safely disposing of a spacecraft (a controlled re-entry, a graveyard orbit, or a deliberate impact) and preserving its data — closing out the mission responsibly.","entryPath":"/mission-operations/end-of-mission-operations"},{"id":"operations_function:fault-protection","name":"Fault Protection","type":"operations_function","domain":"science","description":"The onboard and ground logic that detects failures and responds automatically to keep a spacecraft safe when the ground cannot react in time — vital across the long light-time to deep space.","entryPath":"/mission-operations/fault-protection"},{"id":"operations_function:flight-dynamics","name":"Flight Dynamics","type":"operations_function","domain":"science","description":"The discipline of determining and predicting a spacecraft's orbit and attitude, and computing the manoeuvres needed to keep it on its planned trajectory.","entryPath":"/mission-operations/flight-dynamics"},{"id":"operations_function:flight-rules","name":"Flight Rules","type":"operations_function","domain":"science","description":"The pre-agreed decision rules that tell a control team how to respond to situations, so that time-critical calls are made consistently and safely rather than improvised.","entryPath":"/mission-operations/flight-rules"},{"id":"operations_function:launch-operations","name":"Launch Operations","type":"operations_function","domain":"science","description":"The operations phase spanning launch and the critical early days — acquiring the spacecraft, checking it out, and getting it onto its planned trajectory (Launch and Early Orbit Phase, LEOP).","entryPath":"/mission-operations/launch-operations"},{"id":"operations_function:mission-control","name":"Mission Control","type":"operations_function","domain":"science","description":"The team and facility that command and monitor a spacecraft in real time — the heart of mission operations, staffed by controllers each responsible for a subsystem.","entryPath":"/mission-operations/mission-control"},{"id":"operations_function:mission-planning","name":"Mission Planning","type":"operations_function","domain":"science","description":"Turning a mission's science and engineering goals into a detailed, resource-constrained plan of activities — what the spacecraft will do, when, and within its power, data, and pointing limits.","entryPath":"/mission-operations/mission-planning"},{"id":"operations_function:navigation-operations","name":"Navigation Operations","type":"operations_function","domain":"science","description":"The operational process of guiding a spacecraft to its target — combining orbit determination with manoeuvre design, using the deep-space network's radiometric tracking.","entryPath":"/mission-operations/navigation-operations"},{"id":"operations_function:automation","name":"Operations Automation","type":"operations_function","domain":"science","description":"Software that automates routine operations — from pass scheduling and telemetry screening to onboard sequence execution — reducing workload and enabling operations at deep-space distances.","entryPath":"/mission-operations/automation"},{"id":"operations_function:orbit-determination","name":"Orbit Determination","type":"operations_function","domain":"science","description":"Estimating a spacecraft's precise position and velocity from tracking data (ranging, Doppler, and angles) — the input to every manoeuvre and every science observation.","entryPath":"/mission-operations/orbit-determination"},{"id":"operations_function:safe-mode","name":"Safe Mode","type":"operations_function","domain":"science","description":"A protective state a spacecraft autonomously enters when it detects a serious problem — pointing its solar arrays at the Sun and its antenna toward Earth, and waiting for instructions.","entryPath":"/mission-operations/safe-mode"},{"id":"operations_function:science-operations","name":"Science Operations","type":"operations_function","domain":"science","description":"The prime phase in which the spacecraft carries out its science — planning observations, commanding the instruments, and returning the data that is the point of the mission.","entryPath":"/mission-operations/science-operations"},{"id":"operations_function:spacecraft-health-monitoring","name":"Spacecraft Health Monitoring","type":"operations_function","domain":"science","description":"Continuously watching a spacecraft's telemetry against expected limits to catch anomalies early — the routine vigilance that keeps a mission alive.","entryPath":"/mission-operations/spacecraft-health-monitoring"},{"id":"operations_function:telemetry-processing","name":"Telemetry Processing","type":"operations_function","domain":"science","description":"Receiving, decoding, and displaying the stream of engineering and science data a spacecraft downlinks, so controllers can assess its health and scientists can use its measurements.","entryPath":"/mission-operations/telemetry-processing"}]}