Boeing X-40A
E524826
The Boeing X-40A is an unmanned, subscale technology demonstrator that validated key autonomous landing and reentry technologies later used in the U.S. Air Force’s X-37 spaceplane program.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Boeing X-40A canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5333601 — 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: Boeing X-40A Context triple: [NASA X-plane series, includes, Boeing X-40A]
-
A.
Boeing X-36
The Boeing X-36 is an experimental unmanned tailless fighter aircraft demonstrator designed to test advanced agility and stealth technologies.
-
B.
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.
-
C.
Rockwell X-24C concept
The Rockwell X-24C concept was a proposed hypersonic research aircraft in NASA’s X-plane program, intended to explore advanced high-speed flight and reentry technologies.
-
D.
Martin Marietta X-24B
The Martin Marietta X-24B was an experimental lifting-body research aircraft developed in the 1970s to study unpowered reentry and landing techniques that helped pave the way for the Space Shuttle program.
-
E.
Boeing X-48
The Boeing X-48 is an experimental blended wing body research aircraft developed to test advanced aerodynamic and efficiency concepts for future military and commercial planes.
- 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: Boeing X-40A Target entity description: The Boeing X-40A is an unmanned, subscale technology demonstrator that validated key autonomous landing and reentry technologies later used in the U.S. Air Force’s X-37 spaceplane program.
-
A.
Boeing X-36
The Boeing X-36 is an experimental unmanned tailless fighter aircraft demonstrator designed to test advanced agility and stealth technologies.
-
B.
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.
-
C.
Rockwell X-24C concept
The Rockwell X-24C concept was a proposed hypersonic research aircraft in NASA’s X-plane program, intended to explore advanced high-speed flight and reentry technologies.
-
D.
Martin Marietta X-24B
The Martin Marietta X-24B was an experimental lifting-body research aircraft developed in the 1970s to study unpowered reentry and landing techniques that helped pave the way for the Space Shuttle program.
-
E.
Boeing X-48
The Boeing X-48 is an experimental blended wing body research aircraft developed to test advanced aerodynamic and efficiency concepts for future military and commercial planes.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
experimental spacecraft
ⓘ
subscale test vehicle ⓘ unmanned spaceplane technology demonstrator ⓘ |
| airframeMaterial | composite and metallic structure ⓘ |
| category |
experimental military aircraft
ⓘ
lifting-body spaceplane demonstrator ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crewCapacity | 0 ⓘ |
| designation | X-40A NERFINISHED ⓘ |
| developer | Boeing Phantom Works NERFINISHED ⓘ |
| firstFlightDate | 1998 ⓘ |
| hasLandingGear | true ⓘ |
| hasWings | true ⓘ |
| influenced | Boeing X-37B design ⓘ |
| isAutonomous | true ⓘ |
| isReusable | true ⓘ |
| isUnmanned | true ⓘ |
| launchMethod | air-drop from carrier aircraft ⓘ |
| manufacturer | Boeing ⓘ |
| operator | United States Air Force ⓘ |
| program | X-37 program NERFINISHED ⓘ |
| programSponsor | U.S. Air Force Research Laboratory NERFINISHED ⓘ |
| propulsionType | unpowered glider ⓘ |
| purpose |
technology demonstrator for the X-37 spaceplane
ⓘ
validation of autonomous landing technologies ⓘ validation of reentry guidance and control technologies ⓘ |
| relatedTo | Boeing X-37 NERFINISHED ⓘ |
| scale | subscale ⓘ |
| serviceBranch | U.S. Air Force NERFINISHED ⓘ |
| status | retired ⓘ |
| testedTechnology |
autonomous control
ⓘ
autonomous guidance ⓘ autonomous navigation ⓘ precision landing systems ⓘ reentry flight dynamics ⓘ |
| testLocation |
Edwards Air Force Base
NERFINISHED
ⓘ
Holloman Air Force Base NERFINISHED ⓘ |
| testRole | approach and landing test vehicle ⓘ |
| usedFor |
aerodynamic characterization for X-37
ⓘ
autonomous flight control testing ⓘ autonomous landing testing ⓘ |
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: Boeing X-40A Description of subject: The Boeing X-40A is an unmanned, subscale technology demonstrator that validated key autonomous landing and reentry technologies later used in the U.S. Air Force’s X-37 spaceplane program.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.