B-21 Raider
E146255
The B-21 Raider is a next-generation U.S. stealth strategic bomber designed for long-range, highly survivable penetration of advanced air defenses and delivery of both conventional and nuclear weapons.
All labels observed (5)
| Label | Occurrences |
|---|---|
| B-21 Raider canonical | 6 |
| Northrop Grumman B-21 Raider | 2 |
| B-21 | 1 |
| B-21 Raider bomber | 1 |
| Long Range Strike Bomber program | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1093664 — 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: B-21 Raider Context triple: [Northrop Grumman, developed, B-21 Raider]
-
A.
B-2 Spirit
The B-2 Spirit is a U.S. stealth strategic bomber known for its flying-wing design and ability to penetrate sophisticated air defenses to deliver both conventional and nuclear weapons.
-
B.
F-35C Lightning II
The F-35C Lightning II is the U.S. Navy’s carrier-capable variant of the stealth multirole Joint Strike Fighter, designed for catapult launches, arrested recoveries, and long-range strike and air superiority missions at sea.
-
C.
F-22 Raptor
The F-22 Raptor is a U.S. fifth-generation stealth air superiority fighter jet known for its advanced avionics, supercruise capability, and exceptional maneuverability.
-
D.
B-1B Lancer
The B-1B Lancer is a U.S. Air Force supersonic, long-range strategic bomber designed for low-level penetration and heavy payload delivery.
-
E.
F-35B Lightning II
The F-35B Lightning II is a fifth-generation, stealth, short takeoff and vertical landing (STOVL) multirole fighter jet used by several air arms, including the Royal Air Force and Royal Navy.
- 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: B-21 Raider Target entity description: The B-21 Raider is a next-generation U.S. stealth strategic bomber designed for long-range, highly survivable penetration of advanced air defenses and delivery of both conventional and nuclear weapons.
-
A.
B-2 Spirit
The B-2 Spirit is a U.S. stealth strategic bomber known for its flying-wing design and ability to penetrate sophisticated air defenses to deliver both conventional and nuclear weapons.
-
B.
F-35C Lightning II
The F-35C Lightning II is the U.S. Navy’s carrier-capable variant of the stealth multirole Joint Strike Fighter, designed for catapult launches, arrested recoveries, and long-range strike and air superiority missions at sea.
-
C.
F-22 Raptor
The F-22 Raptor is a U.S. fifth-generation stealth air superiority fighter jet known for its advanced avionics, supercruise capability, and exceptional maneuverability.
-
D.
B-1B Lancer
The B-1B Lancer is a U.S. Air Force supersonic, long-range strategic bomber designed for low-level penetration and heavy payload delivery.
-
E.
F-35B Lightning II
The F-35B Lightning II is a fifth-generation, stealth, short takeoff and vertical landing (STOVL) multirole fighter jet used by several air arms, including the Royal Air Force and Royal Navy.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
bomber
ⓘ
military aircraft ⓘ stealth aircraft ⓘ strategic bomber ⓘ |
| airframeType | flying wing ⓘ |
| avionicsFeature | open systems architecture ⓘ |
| basingConcept |
conventional runways
ⓘ
dispersed basing ⓘ |
| belongsTo | United States strategic bomber fleet ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | two ⓘ |
| customer |
Department of Defense
ⓘ
surface form:
United States Department of Defense
|
| designation |
B-21 Raider
self-linksurface differs
ⓘ
surface form:
B-21
|
| designedBy |
Northrop Grumman
ⓘ
surface form:
Northrop Grumman Aeronautics Systems
|
| designedFor |
future upgrades
ⓘ
high survivability ⓘ long-range strike missions ⓘ network-centric warfare ⓘ penetration of advanced air defenses ⓘ |
| firstPublicRevealDate | 2022-12-02 ⓘ |
| firstPublicRevealLocation |
United States Air Force Plant 42
ⓘ
surface form:
Northrop Grumman facility, Palmdale, California
|
| generation | next-generation bomber ⓘ |
| intendedServiceEntry | mid-2020s ⓘ |
| intendedToComplement |
Boeing B-52 Stratofortress
ⓘ
surface form:
B-52 Stratofortress
|
| intendedToReplace |
B-1B Lancer
ⓘ
B-2 Spirit ⓘ |
| manufacturer | Northrop Grumman ⓘ |
| namedAfter |
Doolittle
ⓘ
surface form:
Doolittle Raiders
|
| nickname | Raider ⓘ |
| operator | United States Air Force ⓘ |
| partOf | United States nuclear triad modernization ⓘ |
| primaryMission |
conventional precision strike
ⓘ
nuclear deterrence ⓘ strategic bombing ⓘ |
| programCostType | classified ⓘ |
| programName |
B-21 Raider
self-linksurface differs
ⓘ
surface form:
Long Range Strike Bomber program
|
| programType | classified acquisition program ⓘ |
| rangeCharacteristic | intercontinental range ⓘ |
| role |
conventional bomber
ⓘ
long-range bomber ⓘ nuclear-capable bomber ⓘ |
| serviceBranch |
Air Force Global Strike Command
ⓘ
surface form:
United States Air Force Global Strike Command
|
| status |
flight testing phase
ⓘ
in development ⓘ |
| stealthTechnology |
low observable design
ⓘ
reduced radar cross-section ⓘ |
| weaponsCapability |
conventional weapons
ⓘ
nuclear weapons ⓘ |
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: B-21 Raider Description of subject: The B-21 Raider is a next-generation U.S. stealth strategic bomber designed for long-range, highly survivable penetration of advanced air defenses and delivery of both conventional and nuclear weapons.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Long Range Strike Bomber program
this entity surface form:
B-21
subject surface form:
Northrop Grumman Corporation
this entity surface form:
B-21 Raider bomber
this entity surface form:
Northrop Grumman B-21 Raider
subject surface form:
Northrop Grumman B-2 Spirit
this entity surface form:
Northrop Grumman B-21 Raider
subject surface form:
B-1B Lancer