R-2 missile
E300303
The R-2 missile was an early Soviet short-range ballistic missile, an improved derivative of the German V-2, used primarily for military purposes and high-altitude research in the early Cold War period.
All labels observed (3)
| Label | Occurrences |
|---|---|
| R-2 missile canonical | 3 |
| R-2 missile program | 1 |
| R-2 rocket | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2779936 — 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: R-2 missile Context triple: [OKB-1, developed, R-2 missile]
-
A.
R-1 missile
The R-1 missile was an early Soviet short-range ballistic missile closely based on the German V-2, marking the USSR’s first significant step into rocket and missile technology.
-
B.
R-14 Chusovaya missile
The R-14 Chusovaya missile was a Soviet intermediate-range ballistic missile deployed during the Cold War, notably associated with the strategic nuclear buildup that led to the Cuban Missile Crisis.
-
C.
R-12 Dvina missile
The R-12 Dvina missile was a Soviet medium-range ballistic missile central to Cold War nuclear strategy and notably deployed during the Cuban Missile Crisis.
-
D.
R-16 ICBM
The R-16 ICBM was an early Soviet two-stage, liquid-fueled intercontinental ballistic missile that formed a key part of the USSR’s strategic nuclear arsenal during the Cold War.
-
E.
UR-100 ICBM
The UR-100 ICBM was a Soviet-era, silo-based intercontinental ballistic missile designed for mass deployment as part of the USSR’s strategic nuclear deterrent.
- 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: R-2 missile Target entity description: The R-2 missile was an early Soviet short-range ballistic missile, an improved derivative of the German V-2, used primarily for military purposes and high-altitude research in the early Cold War period.
-
A.
R-1 missile
The R-1 missile was an early Soviet short-range ballistic missile closely based on the German V-2, marking the USSR’s first significant step into rocket and missile technology.
-
B.
R-14 Chusovaya missile
The R-14 Chusovaya missile was a Soviet intermediate-range ballistic missile deployed during the Cold War, notably associated with the strategic nuclear buildup that led to the Cuban Missile Crisis.
-
C.
R-12 Dvina missile
The R-12 Dvina missile was a Soviet medium-range ballistic missile central to Cold War nuclear strategy and notably deployed during the Cuban Missile Crisis.
-
D.
R-16 ICBM
The R-16 ICBM was an early Soviet two-stage, liquid-fueled intercontinental ballistic missile that formed a key part of the USSR’s strategic nuclear arsenal during the Cold War.
-
E.
UR-100 ICBM
The UR-100 ICBM was a Soviet-era, silo-based intercontinental ballistic missile designed for mass deployment as part of the USSR’s strategic nuclear deterrent.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Soviet ballistic missile
ⓘ
short-range ballistic missile ⓘ |
| category |
Cold War ballistic missile
ⓘ
Soviet military rocket ⓘ |
| chiefDesigner | Sergei Korolev ⓘ |
| countryOfOrigin | Soviet Union ⓘ |
| derivedFrom | V-2 rocket ⓘ |
| developer | OKB-1 ⓘ |
| engineConfiguration | single main engine ⓘ |
| engineType | liquid-fuel rocket engine ⓘ |
| era | 1950s ⓘ |
| exportedAs | R-2 technology for Chinese Dongfeng-1 program ⓘ |
| firstLaunchSite | Kapustin Yar ⓘ |
| fuel | alcohol-water mixture ⓘ |
| guidanceSystem | inertial guidance ⓘ |
| improvementOver |
increased range compared to R-1
ⓘ
separable warhead compared to V-2 ⓘ strengthened airframe ⓘ |
| launchMass | approximately 20,000 kg ⓘ |
| launchMethod | vertical launch ⓘ |
| launchPlatform | mobile launcher ⓘ |
| length | about 17.7 m ⓘ |
| maximumAltitude | over 200 km ⓘ |
| NATOReportingName | SS-2 Sibling ⓘ |
| operator |
Soviet Army
ⓘ
linked to:
Red Army
|
| oxidizer | liquid oxygen ⓘ |
| predecessor | R-1 missile ⓘ |
| production | series-produced for Soviet forces ⓘ |
| propellantType | liquid fuel ⓘ |
| range | approximately 600 km ⓘ |
| role |
research rocket
ⓘ
tactical ballistic missile ⓘ |
| serviceEntry | early 1950s ⓘ |
| stabilization | aerodynamic fins ⓘ |
| stages | single-stage ⓘ |
| status | retired ⓘ |
| successor | R-5 missile ⓘ |
| testSite | Kapustin Yar ⓘ |
| thrust | greater than V-2 rocket thrust ⓘ |
| usedBy |
People's Republic of China
ⓘ
linked to:
China
Soviet Union ⓘ |
| usedDuring | early Cold War ⓘ |
| usedFor |
cosmic ray studies
ⓘ
geophysical research ⓘ high-altitude research ⓘ military purposes ⓘ upper atmosphere research ⓘ |
| warheadPlacement | separable warhead ⓘ |
| warheadType | high-explosive warhead ⓘ |
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: R-2 missile Description of subject: The R-2 missile was an early Soviet short-range ballistic missile, an improved derivative of the German V-2, used primarily for military purposes and high-altitude research in the early Cold War period.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: R-2 missile
linked to: R-2 missile