PSLV-DL
E898955
PSLV-DL is a two-strap-on variant of India’s Polar Satellite Launch Vehicle designed to flexibly launch small to medium payloads into Earth orbit.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T11001578 — 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: PSLV-DL Context triple: [PSLV launch vehicle family, notableVariant, PSLV-DL]
-
A.
PSLV-D1
PSLV-D1 was the inaugural developmental mission of India’s Polar Satellite Launch Vehicle (PSLV), marking the rocket’s first test flight.
-
B.
PSLV-XL
PSLV-XL is a high-powered variant of India’s Polar Satellite Launch Vehicle designed to carry heavier payloads into orbit, notably used for missions like the Chandrayaan-1 lunar probe.
-
C.
PSLV-G
PSLV-G is a standard configuration of India’s Polar Satellite Launch Vehicle used by ISRO to place satellites into polar and sun-synchronous orbits.
-
D.
PSLV-CA
PSLV-CA is a variant of India’s Polar Satellite Launch Vehicle designed for launching smaller payloads into orbit using a configuration without solid strap-on boosters.
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E.
PSLV-C11
PSLV-C11 is an upgraded variant of India’s Polar Satellite Launch Vehicle that successfully launched the country’s first lunar mission, Chandrayaan-1.
- 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: PSLV-DL Target entity description: PSLV-DL is a two-strap-on variant of India’s Polar Satellite Launch Vehicle designed to flexibly launch small to medium payloads into Earth orbit.
-
A.
PSLV-D1
PSLV-D1 was the inaugural developmental mission of India’s Polar Satellite Launch Vehicle (PSLV), marking the rocket’s first test flight.
-
B.
PSLV-XL
PSLV-XL is a high-powered variant of India’s Polar Satellite Launch Vehicle designed to carry heavier payloads into orbit, notably used for missions like the Chandrayaan-1 lunar probe.
-
C.
PSLV-G
PSLV-G is a standard configuration of India’s Polar Satellite Launch Vehicle used by ISRO to place satellites into polar and sun-synchronous orbits.
-
D.
PSLV-CA
PSLV-CA is a variant of India’s Polar Satellite Launch Vehicle designed for launching smaller payloads into orbit using a configuration without solid strap-on boosters.
-
E.
PSLV-C11
PSLV-C11 is an upgraded variant of India’s Polar Satellite Launch Vehicle that successfully launched the country’s first lunar mission, Chandrayaan-1.
- F. None of above. chosen
Statements (32)
| Predicate | Object |
|---|---|
| instanceOf |
expendable launch system
ⓘ
launch vehicle variant ⓘ orbital launch vehicle ⓘ |
| countryOfOrigin | India ⓘ |
| designedFor |
medium payloads
ⓘ
small payloads ⓘ |
| family | PSLV NERFINISHED ⓘ |
| firstStagePropellantType | solid ⓘ |
| fourthStagePropellantType | liquid ⓘ |
| isVariantOf |
PSLV core-alone configuration
ⓘ
PSLV-XL NERFINISHED ⓘ |
| launchCapability |
Sun-synchronous orbit
ⓘ
low Earth orbit ⓘ |
| launchConfiguration | two-strap-on variant ⓘ |
| launchEnvironment | Earth orbit insertion ⓘ |
| launchSite | Satish Dhawan Space Centre NERFINISHED ⓘ |
| manufacturer | Indian Space Research Organisation NERFINISHED ⓘ |
| missionProfile |
Sun-synchronous missions
ⓘ
polar orbit missions ⓘ |
| numberOfStrapOnBoosters | 2 GENERATED ⓘ |
| operator | Indian Space Research Organisation ⓘ |
| partOf | Polar Satellite Launch Vehicle family NERFINISHED ⓘ |
| propulsionType | solid and liquid hybrid staging ⓘ |
| secondStagePropellantType | liquid ⓘ |
| spaceAgency | ISRO NERFINISHED ⓘ |
| stageCount | 4 ⓘ |
| status | active ⓘ |
| strapOnBoosterType | PSOM-XL solid rocket booster NERFINISHED ⓘ |
| thirdStagePropellantType | solid ⓘ |
| usedFor |
Earth observation satellites
ⓘ
small satellite missions ⓘ technology demonstration satellites ⓘ |
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: PSLV-DL Description of subject: PSLV-DL is a two-strap-on variant of India’s Polar Satellite Launch Vehicle designed to flexibly launch small to medium payloads into Earth orbit.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
PSLV-QL