X-51A Waverider scramjet demonstrator
E397555
The X-51A Waverider scramjet demonstrator is an experimental unmanned hypersonic aircraft designed to test air-breathing supersonic combustion ramjet propulsion at extremely high speeds.
All labels observed (2)
| Label | Occurrences |
|---|---|
| X-51 Waverider | 1 |
| X-51A Waverider scramjet demonstrator canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3899005 — 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: X-51A Waverider scramjet demonstrator Context triple: [Air Force Research Laboratory, notableProject, X-51A Waverider scramjet demonstrator]
-
A.
X-20 Dyna-Soar
The X-20 Dyna-Soar was a U.S. Air Force experimental spaceplane project from the early Cold War era, intended for orbital reconnaissance, bombing, and other military missions before its cancellation in the 1960s.
-
B.
X-59 QueSST
The X-59 QueSST is a NASA experimental supersonic research aircraft designed to demonstrate quiet sonic boom technology for future low-noise supersonic flight over land.
-
C.
North American X-15
The North American X-15 was a rocket-powered experimental research aircraft that set speed and altitude records in the 1960s and significantly advanced knowledge of hypersonic flight and spaceflight.
-
D.
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.
-
E.
Bell X-15
The Bell X-15 was a rocket-powered experimental aircraft that set speed and altitude records in the 1960s and contributed crucial data to the development of crewed spaceflight and high-speed aeronautics.
- 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: X-51A Waverider scramjet demonstrator Target entity description: The X-51A Waverider scramjet demonstrator is an experimental unmanned hypersonic aircraft designed to test air-breathing supersonic combustion ramjet propulsion at extremely high speeds.
-
A.
X-20 Dyna-Soar
The X-20 Dyna-Soar was a U.S. Air Force experimental spaceplane project from the early Cold War era, intended for orbital reconnaissance, bombing, and other military missions before its cancellation in the 1960s.
-
B.
X-59 QueSST
The X-59 QueSST is a NASA experimental supersonic research aircraft designed to demonstrate quiet sonic boom technology for future low-noise supersonic flight over land.
-
C.
North American X-15
The North American X-15 was a rocket-powered experimental research aircraft that set speed and altitude records in the 1960s and significantly advanced knowledge of hypersonic flight and spaceflight.
-
D.
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.
-
E.
Bell X-15
The Bell X-15 was a rocket-powered experimental aircraft that set speed and altitude records in the 1960s and contributed crucial data to the development of crewed spaceflight and high-speed aeronautics.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
X-plane
ⓘ
experimental unmanned hypersonic aircraft ⓘ research aircraft ⓘ scramjet demonstrator ⓘ |
| airframeMaterialClass | high-temperature resistant materials ⓘ |
| booster | ATACMS solid rocket booster ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | 0 ⓘ |
| designFeature |
air-launched
ⓘ
unmanned ⓘ waverider configuration ⓘ |
| designSpeedClass | hypersonic ⓘ |
| developer |
Boeing Phantom Works
ⓘ
Defense Advanced Research Projects Agency ⓘ
surface form:
DARPA
NASA ⓘ Pratt & Whitney Rocketdyne ⓘ United States Air Force ⓘ |
| engine | Pratt & Whitney Rocketdyne SJY61 scramjet ⓘ |
| firstFlightDate | 2010-05-26 ⓘ |
| firstFlightLocation | Edwards Air Force Base ⓘ |
| firstFlightRole | scramjet flight test ⓘ |
| flightDurationRecord | over 200 seconds of scramjet-powered flight ⓘ |
| fundingAgency |
Defense Advanced Research Projects Agency
ⓘ
surface form:
DARPA
Air Force Research Laboratory ⓘ
surface form:
United States Air Force Research Laboratory
|
| guidance | autonomous flight control ⓘ |
| launchMethod | carried aloft by B-52 and rocket-boosted to scramjet ignition ⓘ |
| launchPlatform |
Boeing B-52 Stratofortress
ⓘ
surface form:
B-52H Stratofortress
|
| manufacturer | Boeing ⓘ |
| maxSpeed | around Mach 5.1 ⓘ |
| notableFlight |
2010-05-26 first powered scramjet flight
ⓘ
2013-05-01 longest-duration air-breathing hypersonic flight ⓘ |
| numberOfTestFlights | 4 ⓘ |
| operatingAltitudeClass | high altitude ⓘ |
| primaryMission |
demonstrate sustained hypersonic flight
ⓘ
test scramjet propulsion ⓘ |
| programGoal |
advance hypersonic cruise missile technology
ⓘ
validate scramjet operability in flight ⓘ |
| programStartApprox | early 2000s ⓘ |
| programType | technology demonstrator ⓘ |
| propulsion | air-breathing scramjet engine ⓘ |
| propulsionType | supersonic combustion ramjet ⓘ |
| relatedProgram | US hypersonic weapons development programs ⓘ |
| status | retired ⓘ |
| successMetric | sustained scramjet operation at Mach 5+ ⓘ |
| testEnvironment | high supersonic to hypersonic speeds ⓘ |
| testRange | Pacific test ranges off U.S. West Coast ⓘ |
| usedBy | United States Air Force ⓘ |
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: X-51A Waverider scramjet demonstrator Description of subject: The X-51A Waverider scramjet demonstrator is an experimental unmanned hypersonic aircraft designed to test air-breathing supersonic combustion ramjet propulsion at extremely high speeds.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
X-51 Waverider