Martin Marietta X-24A
E512389
The Martin Marietta X-24A was an experimental lifting-body research aircraft developed in the late 1960s to study unpowered reentry and landing characteristics for future reusable spacecraft.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Martin Marietta X-24A canonical | 3 |
| Martin X-24A | 2 |
| Martin-Marietta X-24A | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5333594 — 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: Martin Marietta X-24A Context triple: [NASA X-plane series, includes, Martin Marietta X-24A]
-
A.
Northrop X-21
The Northrop X-21 was an experimental U.S. jet aircraft of the 1960s designed to test laminar-flow control technology for improved aerodynamic efficiency.
-
B.
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.
-
C.
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.
-
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: Martin Marietta X-24A Target entity description: The Martin Marietta X-24A was an experimental lifting-body research aircraft developed in the late 1960s to study unpowered reentry and landing characteristics for future reusable spacecraft.
-
A.
Northrop X-21
The Northrop X-21 was an experimental U.S. jet aircraft of the 1960s designed to test laminar-flow control technology for improved aerodynamic efficiency.
-
B.
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.
-
C.
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.
-
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 |
experimental aircraft
ⓘ
lifting body ⓘ research aircraft ⓘ |
| airframeConversion |
later rebuilt as X-24B
ⓘ
linked to:
Martin Marietta X-24B
|
| configuration | tailless lifting body ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crew | 1 ⓘ |
| crewType | pilot ⓘ |
| designation | X-24A ⓘ |
| designFeature |
blunt-nosed lifting body shape
ⓘ
no conventional wings ⓘ single vertical stabilizer ⓘ |
| developedFor | NASA ⓘ |
| emptyWeight | about 5,670 kg ⓘ |
| engineType |
Reaction Motors XLR-11 rocket engine
ⓘ
linked to:
Reaction Motors LR8-RM-6 rocket engine
|
| era |
early 1970s
ⓘ
late 1960s ⓘ |
| firstFlightDate | 1969-04-17 ⓘ |
| flightType |
subsonic
ⓘ
supersonic ⓘ transonic ⓘ |
| height | about 3.0 m ⓘ |
| influenced | Space Shuttle reentry and landing design ⓘ |
| landingMode | unpowered glide landing ⓘ |
| launchMethod | air-launched from B-52 mothership ⓘ |
| length | about 7.5 m ⓘ |
| manufacturer | Martin Marietta ⓘ |
| maxAltitude | about 21,000 m ⓘ |
| maxMachNumber | about Mach 1.6 ⓘ |
| maxSpeed | about 1020 km/h ⓘ |
| numberBuilt | 1 ⓘ |
| operator |
NASA Dryden Flight Research Center
ⓘ
linked to:
NASA Armstrong Flight Research Center
United States Air Force ⓘ |
| program | NASA lifting body program ⓘ |
| propulsion | rocket-powered ⓘ |
| relatedTo |
Northrop HL-10
ⓘ
Northrop M2-F2 ⓘ Northrop M2-F3 ⓘ |
| retirementDate | 1975 ⓘ |
| status | retired ⓘ |
| successor | Martin Marietta X-24B ⓘ |
| testLocation | Edwards Air Force Base ⓘ |
| usedFor |
landing characteristics research
ⓘ
lifting-body research ⓘ reusable spacecraft technology development ⓘ unpowered reentry studies ⓘ |
| wingspan | about 4.2 m ⓘ |
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: Martin Marietta X-24A Description of subject: The Martin Marietta X-24A was an experimental lifting-body research aircraft developed in the late 1960s to study unpowered reentry and landing characteristics for future reusable spacecraft.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Martin Marietta X-24A
linked to: Martin Marietta X-24A
subject linked to:
Rockwell X-24C concept
linked to: Martin Marietta X-24A