Douglas D-558-1 Skystreak
E501412
The Douglas D-558-1 Skystreak was an experimental U.S. Navy research jet of the late 1940s used to investigate high-subsonic and transonic flight, contributing key data to early supersonic aircraft development.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Douglas D-558-1 Skystreak canonical | 3 |
| D-558 research program | 1 |
| D-558-1 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5176865 — 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 D-558-1 Skystreak Context triple: [Douglas Aircraft Company, notableProduct, Douglas D-558-1 Skystreak]
-
A.
Douglas D-558-2 Skyrocket
The Douglas D-558-2 Skyrocket was a U.S. Navy and NACA experimental research aircraft that became one of the first aircraft to exceed Mach 2 in level flight during the early 1950s.
-
B.
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.
-
C.
Bell X-1D
The Bell X-1D was an experimental rocket-powered research aircraft in the X-1 series, built to extend high-speed flight testing beyond the capabilities of the original Bell X-1.
-
D.
Bell X-1E
The Bell X-1E was a late, highly modified variant of the pioneering X-1 rocket research aircraft, used by the U.S. to investigate high-speed transonic and supersonic flight aerodynamics in the 1950s.
-
E.
Bell X-1C
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.
- 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 D-558-1 Skystreak Target entity description: The Douglas D-558-1 Skystreak was an experimental U.S. Navy research jet of the late 1940s used to investigate high-subsonic and transonic flight, contributing key data to early supersonic aircraft development.
-
A.
Douglas D-558-2 Skyrocket
The Douglas D-558-2 Skyrocket was a U.S. Navy and NACA experimental research aircraft that became one of the first aircraft to exceed Mach 2 in level flight during the early 1950s.
-
B.
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.
-
C.
Bell X-1D
The Bell X-1D was an experimental rocket-powered research aircraft in the X-1 series, built to extend high-speed flight testing beyond the capabilities of the original Bell X-1.
-
D.
Bell X-1E
The Bell X-1E was a late, highly modified variant of the pioneering X-1 rocket research aircraft, used by the U.S. to investigate high-speed transonic and supersonic flight aerodynamics in the 1950s.
-
E.
Bell X-1C
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.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
experimental research aircraft
ⓘ
jet aircraft ⓘ single-engine aircraft ⓘ |
| aircraftCategory | X-plane era research aircraft ⓘ |
| airframeMaterial | metal construction ⓘ |
| airIntakeLocation | nose intake ⓘ |
| cockpitConfiguration | single-seat ⓘ |
| configuration | straight-wing aircraft ⓘ |
| contributedTo | early supersonic aircraft development ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| designation |
D-558-1
ⓘ
linked to:
Douglas D-558-1 Skystreak
|
| designGoal |
investigate flight near the speed of sound
ⓘ
provide data for future supersonic designs ⓘ |
| engineModel | Allison J35 ⓘ |
| era | late 1940s ⓘ |
| firstFlightDate | 1947-04-14 ⓘ |
| fuselageType | cylindrical fuselage ⓘ |
| landingGearType | tricycle landing gear ⓘ |
| manufacturer | Douglas Aircraft Company ⓘ |
| maximumSpeedClass | high-subsonic ⓘ |
| nickName | Skystreak ⓘ |
| notableFeature | bright red paint scheme ⓘ |
| numberBuilt | 3 ⓘ |
| operator | United States Navy ⓘ |
| powerplantType | turbojet engine ⓘ |
| primaryRole |
high-speed research
ⓘ
transonic flight research ⓘ |
| program |
D-558 research program
ⓘ
linked to:
Douglas D-558-1 Skystreak
|
| programPartner | NACA ⓘ |
| programPhase | Phase I of D-558 program ⓘ |
| programSponsor |
U.S. Navy
ⓘ
linked to:
United States Navy
|
| propulsion | jet propulsion ⓘ |
| propulsionType | non-rocket-powered ⓘ |
| researchFocus |
compressibility effects
ⓘ
high-subsonic aerodynamics ⓘ transonic aerodynamics ⓘ |
| serviceEntryDecade | 1940s ⓘ |
| status | retired ⓘ |
| successor | Douglas D-558-2 Skyrocket ⓘ |
| tailConfiguration | conventional tail ⓘ |
| takeoffMethod | conventional runway takeoff ⓘ |
| usedBy |
National Advisory Committee for Aeronautics
ⓘ
linked to:
NACA
|
| usedFor |
data collection on stability and control at transonic speeds
ⓘ
performance testing near Mach 1 ⓘ |
| wingType | low-wing monoplane ⓘ |
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 D-558-1 Skystreak Description of subject: The Douglas D-558-1 Skystreak was an experimental U.S. Navy research jet of the late 1940s used to investigate high-subsonic and transonic flight, contributing key data to early supersonic aircraft development.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Douglas D-558-1 Skystreak
linked to: Douglas D-558-1 Skystreak