Douglas X-3 Stiletto
E18817
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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Douglas X-3 Stiletto canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T145987 — 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: Douglas X-3 Stiletto Context triple: [X-Plane experimental aircraft programs, notableAircraft, Douglas X-3 Stiletto]
-
A.
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.
-
B.
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.
-
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.
Wright J-5C Whirlwind
The Wright J-5C Whirlwind is a nine-cylinder, air-cooled radial aircraft engine renowned for its reliability and use in pioneering long-distance flights of the late 1920s.
-
E.
Messerschmitt Me 163
The Messerschmitt Me 163 was a German World War II rocket-powered interceptor aircraft, notable as the only operational rocket fighter ever deployed in combat.
- 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: Douglas X-3 Stiletto Target entity description: 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.
-
A.
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.
-
B.
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.
-
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.
Wright J-5C Whirlwind
The Wright J-5C Whirlwind is a nine-cylinder, air-cooled radial aircraft engine renowned for its reliability and use in pioneering long-distance flights of the late 1920s.
-
E.
Messerschmitt Me 163
The Messerschmitt Me 163 was a German World War II rocket-powered interceptor aircraft, notable as the only operational rocket fighter ever deployed in combat.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
experimental aircraft
ⓘ
jet-powered aircraft ⓘ research aircraft ⓘ supersonic aircraft ⓘ |
| aircraftCategory | X-plane ⓘ |
| airframeMaterial | primarily metal construction ⓘ |
| configuration |
mid-wing monoplane
ⓘ
single-seat ⓘ twin-engine ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | 1 ⓘ |
| designedFor |
advanced aerodynamic concepts research
ⓘ
future high-speed aircraft development ⓘ sustained supersonic flight investigation ⓘ |
| displayLocation | National Museum of the United States Air Force ⓘ |
| displayLocationCity |
Dayton
ⓘ
surface form:
Dayton, Ohio
|
| era | early 1950s ⓘ |
| firstFlight | 1952-10-20 ⓘ |
| fuselageType | slender fuselage ⓘ |
| intendedRole |
aerodynamic research
ⓘ
supersonic research ⓘ |
| landingGear | tricycle landing gear ⓘ |
| manufacturer | Douglas Aircraft Company ⓘ |
| maximumSpeed |
about Mach 1.2 in a dive
ⓘ
subsonic in level flight ⓘ |
| noseGearFeature | long nose gear strut ⓘ |
| noseType | very long pointed nose ⓘ |
| notableFor |
data on slender-fuselage high-speed design
ⓘ
investigation of inertial roll coupling ⓘ |
| numberBuilt | 1 ⓘ |
| operator |
NACA
ⓘ
surface form:
National Advisory Committee for Aeronautics
United States Air Force ⓘ |
| powerplant | 2 × Westinghouse J34 turbojet engines ⓘ |
| primaryUser |
United States Air Force
ⓘ
surface form:
USAF
|
| programOutcome | did not achieve planned sustained Mach 2 performance ⓘ |
| programSponsor |
NACA
ⓘ
United States Air Force ⓘ |
| programType | experimental research program ⓘ |
| reasonForPerformanceLimitation | underpowered engines ⓘ |
| registrationOrSerial | USAF serial 49-2892 ⓘ |
| researchFocus |
stability and control at transonic and supersonic speeds
ⓘ
structural loads at high speed ⓘ |
| status | retired ⓘ |
| successorInfluenceOn |
later supersonic fighter designs
ⓘ
slender-fuselage high-speed aircraft concepts ⓘ |
| tailType | conventional tail ⓘ |
| usedBy |
NASA Armstrong Flight Research Center
ⓘ
surface form:
NACA High-Speed Flight Station
|
| wingPlacement | low-to-mid wing ⓘ |
| wingType | small straight wings ⓘ |
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: Douglas X-3 Stiletto Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.