Voyager 1 electrical power subsystem
E870144
The Voyager 1 electrical power subsystem is the spacecraft’s radioisotope thermoelectric generator–based system that supplies and manages electrical power for all onboard instruments and systems throughout its deep-space mission.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Voyager 1 electrical power subsystem canonical | 2 |
| Voyager 1 radioisotope thermoelectric generators | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10548240 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Voyager 1 electrical power subsystem Context triple: [Voyager 1 flight data system, powerSource, Voyager 1 electrical power subsystem]
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A.
Voyager 1 flight data system
The Voyager 1 flight data system is the onboard electronics and computing subsystem that formats, stores, and transmits scientific and engineering data from the Voyager 1 spacecraft back to Earth.
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B.
Voyager 2 attitude control system
The Voyager 2 attitude control system is the spacecraft’s subsystem responsible for precisely orienting and stabilizing the probe in space so its instruments and communications antenna remain correctly pointed.
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C.
Voyager 2 telecommunications subsystem
The Voyager 2 telecommunications subsystem is the spacecraft’s radio and antenna system that sends scientific data and status information across interplanetary distances back to Earth and receives commands from mission control.
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D.
Space Shuttle electrical power system
The Space Shuttle electrical power system was the orbiter’s integrated network of fuel cells, distribution buses, and control equipment that generated and supplied electricity to all onboard systems and payloads.
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E.
Mariner spacecraft bus
The Mariner spacecraft bus is a standardized NASA spacecraft design used in the 1960s–70s Mariner program to support interplanetary missions to planets such as Venus and Mercury.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Voyager 1 electrical power subsystem Target entity description: The Voyager 1 electrical power subsystem is the spacecraft’s radioisotope thermoelectric generator–based system that supplies and manages electrical power for all onboard instruments and systems throughout its deep-space mission.
-
A.
Voyager 1 flight data system
The Voyager 1 flight data system is the onboard electronics and computing subsystem that formats, stores, and transmits scientific and engineering data from the Voyager 1 spacecraft back to Earth.
-
B.
Voyager 2 attitude control system
The Voyager 2 attitude control system is the spacecraft’s subsystem responsible for precisely orienting and stabilizing the probe in space so its instruments and communications antenna remain correctly pointed.
-
C.
Voyager 2 telecommunications subsystem
The Voyager 2 telecommunications subsystem is the spacecraft’s radio and antenna system that sends scientific data and status information across interplanetary distances back to Earth and receives commands from mission control.
-
D.
Space Shuttle electrical power system
The Space Shuttle electrical power system was the orbiter’s integrated network of fuel cells, distribution buses, and control equipment that generated and supplied electricity to all onboard systems and payloads.
-
E.
Mariner spacecraft bus
The Mariner spacecraft bus is a standardized NASA spacecraft design used in the 1960s–70s Mariner program to support interplanetary missions to planets such as Venus and Mercury.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
spacecraft electrical power subsystem
ⓘ
spacecraft subsystem ⓘ |
| cannotUse | solar arrays ⓘ |
| designedFor |
autonomous operation
ⓘ
deep-space mission ⓘ high reliability ⓘ long-duration operation ⓘ redundancy ⓘ |
| developedBy |
Jet Propulsion Laboratory
ⓘ
NASA ⓘ |
| environment |
deep space
ⓘ
interstellar space ⓘ |
| exceededDesignLifetime | true ⓘ |
| hasComponent |
RTG power conversion units
ⓘ
battery (for transient loads only) ⓘ cabling and harnesses ⓘ fuses and circuit protection devices ⓘ load switching circuitry ⓘ power control electronics ⓘ power distribution unit ⓘ voltage regulation circuitry ⓘ |
| initialElectricalPowerOutput | approximately 470 watts at launch ⓘ |
| initialNumberOfRTGs | 3 ⓘ |
| launchDate | 1977-09-05 ⓘ |
| lifetimeDesignGoal | at least 5 years ⓘ |
| managesPowerFor |
Voyager 1 attitude control system
ⓘ
Voyager 1 communication system ⓘ Voyager 1 data handling system ⓘ Voyager 1 science instruments ⓘ Voyager 1 thermal control system ⓘ |
| mission |
Voyager 1 interstellar mission
ⓘ
linked to:
Voyager 1
Voyager program ⓘ |
| mustOperateAt | large heliocentric distances ⓘ |
| partOf | Voyager 1 ⓘ |
| poweredBy |
Pu-238 radioisotope fuel
ⓘ
plutonium-238 ⓘ |
| powerOutputDecreasesDueTo |
radioactive decay of Pu-238
ⓘ
thermocouple degradation ⓘ |
| providesPowerTo |
attitude thruster valves
ⓘ
heaters for thermal control ⓘ onboard computers ⓘ radio receivers ⓘ radio transmitters ⓘ |
| reasonForRTGUse | insufficient solar flux at outer planets and beyond ⓘ |
| stillOperationalAsOf | 2024 ⓘ |
| supports |
load shedding strategies
ⓘ
power margin management ⓘ selective instrument shutdown to conserve power ⓘ |
| uses |
RTG
ⓘ
radioisotope thermoelectric generators ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Voyager 1 electrical power subsystem Description of subject: The Voyager 1 electrical power subsystem is the spacecraft’s radioisotope thermoelectric generator–based system that supplies and manages electrical power for all onboard instruments and systems throughout its deep-space mission.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Voyager 1 electrical power subsystem