Bell X-1C
E104326
The Bell X-1C was a planned but never completed advanced variant of the Bell X-1 rocket-powered research aircraft, intended for high-speed military weapons testing.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bell X-1C canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T804670 — 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: Bell X-1C Context triple: [Bell X-1, successor, Bell X-1C]
-
A.
Bell X-1B
The Bell X-1B was an advanced variant of the original Bell X-1 rocket-powered research aircraft, used primarily to investigate high-speed aerodynamic heating and stability at transonic and supersonic speeds.
-
B.
Bell X-2
The Bell X-2 was a rocket-powered experimental research aircraft developed in the 1950s to investigate flight characteristics at extremely high speeds and altitudes, contributing crucial data to early supersonic and space-era aeronautics.
-
C.
Bell X-1
The Bell X-1 was a pioneering rocket-powered research aircraft that became the first airplane to break the sound barrier in level flight.
-
D.
Bell X-5
The Bell X-5 was an early U.S. experimental jet that pioneered variable-sweep wing technology, helping to shape the design of later high-performance military aircraft.
-
E.
Douglas X-3 Stiletto
The Douglas X-3 Stiletto was a slender, jet-powered experimental research aircraft of the early 1950s designed to investigate sustained supersonic flight and advanced aerodynamic concepts for future high-speed aircraft.
- 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: Bell X-1C Target entity description: The Bell X-1C was a planned but never completed advanced variant of the Bell X-1 rocket-powered research aircraft, intended for high-speed military weapons testing.
-
A.
Bell X-1B
The Bell X-1B was an advanced variant of the original Bell X-1 rocket-powered research aircraft, used primarily to investigate high-speed aerodynamic heating and stability at transonic and supersonic speeds.
-
B.
Bell X-2
The Bell X-2 was a rocket-powered experimental research aircraft developed in the 1950s to investigate flight characteristics at extremely high speeds and altitudes, contributing crucial data to early supersonic and space-era aeronautics.
-
C.
Bell X-1
The Bell X-1 was a pioneering rocket-powered research aircraft that became the first airplane to break the sound barrier in level flight.
-
D.
Bell X-5
The Bell X-5 was an early U.S. experimental jet that pioneered variable-sweep wing technology, helping to shape the design of later high-performance military aircraft.
-
E.
Douglas X-3 Stiletto
The Douglas X-3 Stiletto was a slender, jet-powered experimental research aircraft of the early 1950s designed to investigate sustained supersonic flight and advanced aerodynamic concepts for future high-speed aircraft.
- F. None of above. chosen
Statements (26)
| Predicate | Object |
|---|---|
| instanceOf |
experimental aircraft
ⓘ
rocket-powered aircraft ⓘ unbuilt aircraft project ⓘ |
| aircraftRole |
research aircraft
ⓘ
weapons test aircraft ⓘ |
| aircraftType | single-seat aircraft ⓘ |
| airframeType | fixed-wing aircraft ⓘ |
| basedOn | Bell X-1 design ⓘ |
| completionStatus | never completed ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| designedBy | Bell Aircraft engineers ⓘ |
| designedFor |
supersonic flight
ⓘ
testing of armament at high Mach numbers ⓘ |
| developmentOutcome | project cancelled before construction ⓘ |
| hasVariantRelation |
Bell X-1
ⓘ
Bell X-1A ⓘ Bell X-1B ⓘ Bell X-1D ⓘ |
| intendedOperator | United States Air Force ⓘ |
| intendedUse | high-speed military weapons testing ⓘ |
| manufacturer | Bell Aircraft ⓘ |
| partOfSeries |
Bell X-1
ⓘ
surface form:
Bell X-1 series
|
| precededBy | Bell X-1B ⓘ |
| programAffiliation |
Hypersonic Technology Vehicle programs
ⓘ
surface form:
U.S. high-speed research program
|
| propulsionType | rocket-powered ⓘ |
| status | cancelled ⓘ |
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: Bell X-1C Description of subject: The Bell X-1C was a planned but never completed advanced variant of the Bell X-1 rocket-powered research aircraft, intended for high-speed military weapons testing.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.