McDonnell Douglas YC-15
E833174
The McDonnell Douglas YC-15 was an experimental U.S. Air Force transport aircraft prototype designed in the 1970s to demonstrate advanced short takeoff and landing capabilities and served as a precursor to the Boeing C-17 Globemaster III.
All labels observed (2)
| Label | Occurrences |
|---|---|
| McDonnell Douglas YC-15 canonical | 3 |
| Boeing C-17 prototype | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9991877 — 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: McDonnell Douglas YC-15 Context triple: [Advanced Medium STOL Transport program, resultedInPrototype, McDonnell Douglas YC-15]
-
A.
Boeing YC-14
The Boeing YC-14 was a 1970s American experimental short takeoff and landing (STOL) tactical transport aircraft prototype developed for the U.S. Air Force’s Advanced Medium STOL Transport program.
-
B.
Convair T-29
The Convair T-29 is a military trainer and transport aircraft developed from the Convair 240 airliner and used primarily by the U.S. Air Force for navigation and radar training.
-
C.
PC-6 Porter
The PC-6 Porter is a Swiss-designed single-engine short takeoff and landing (STOL) utility aircraft widely used for rugged operations such as transport, parachute dropping, and liaison duties.
-
D.
Fairchild C-123 Provider
The Fairchild C-123 Provider is a U.S. military transport aircraft widely known for its extensive use in cargo, troop transport, and aerial spray missions during the Vietnam War.
-
E.
Grumman OV-1 Mohawk
The Grumman OV-1 Mohawk is a twin-turboprop, battlefield reconnaissance and attack aircraft developed for the U.S. Army during the Cold War, known for its side-looking radar and rugged short takeoff and landing capabilities.
- 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: McDonnell Douglas YC-15 Target entity description: The McDonnell Douglas YC-15 was an experimental U.S. Air Force transport aircraft prototype designed in the 1970s to demonstrate advanced short takeoff and landing capabilities and served as a precursor to the Boeing C-17 Globemaster III.
-
A.
Boeing YC-14
The Boeing YC-14 was a 1970s American experimental short takeoff and landing (STOL) tactical transport aircraft prototype developed for the U.S. Air Force’s Advanced Medium STOL Transport program.
-
B.
Convair T-29
The Convair T-29 is a military trainer and transport aircraft developed from the Convair 240 airliner and used primarily by the U.S. Air Force for navigation and radar training.
-
C.
PC-6 Porter
The PC-6 Porter is a Swiss-designed single-engine short takeoff and landing (STOL) utility aircraft widely used for rugged operations such as transport, parachute dropping, and liaison duties.
-
D.
Fairchild C-123 Provider
The Fairchild C-123 Provider is a U.S. military transport aircraft widely known for its extensive use in cargo, troop transport, and aerial spray missions during the Vietnam War.
-
E.
Grumman OV-1 Mohawk
The Grumman OV-1 Mohawk is a twin-turboprop, battlefield reconnaissance and attack aircraft developed for the U.S. Army during the Cold War, known for its side-looking radar and rugged short takeoff and landing capabilities.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
experimental aircraft
ⓘ
prototype military transport aircraft ⓘ |
| airframeMaterial | aluminum alloy ⓘ |
| cargoCapacity |
approximately 18 pallets
ⓘ
approximately 60 litters ⓘ approximately 72 troops ⓘ |
| category |
STOL aircraft
ⓘ
jet transport aircraft ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| crew | 3 ⓘ |
| designedFor |
short takeoff and landing
ⓘ
tactical airlift ⓘ |
| designedToReplace | Lockheed C-130 Hercules NERFINISHED ⓘ |
| designFeature |
advanced high-lift system
ⓘ
double-slotted flaps ⓘ externally blown flaps ⓘ supercritical wing ⓘ |
| developmentStart | early 1970s ⓘ |
| engineConfiguration | four-engine ⓘ |
| engineType | turbofan ⓘ |
| fate | program cancelled ⓘ |
| firstFlight | 1975-08-26 ⓘ |
| height | approximately 39 ft ⓘ |
| influenced | Boeing C-17 Globemaster III NERFINISHED ⓘ |
| introduction | 1970s ⓘ |
| landingDistance | short takeoff and landing capable ⓘ |
| landingGear | tricycle retractable landing gear ⓘ |
| length | approximately 124 ft ⓘ |
| manufacturer | McDonnell Douglas NERFINISHED ⓘ |
| maximumSpeed | approximately 0.78 Mach ⓘ |
| maximumTakeoffWeight | approximately 149700 lb ⓘ |
| numberBuilt | 2 ⓘ |
| operator | United States Air Force ⓘ |
| powerplant | Pratt & Whitney JT8D turbofan NERFINISHED ⓘ |
| primaryUser | United States Air Force NERFINISHED ⓘ |
| program | Advanced Medium STOL Transport NERFINISHED ⓘ |
| programCompetition | Boeing YC-14 NERFINISHED ⓘ |
| range | approximately 2600 nmi ⓘ |
| retirementDate | late 1970s ⓘ |
| role |
short takeoff and landing transport
ⓘ
tactical transport aircraft ⓘ |
| status |
prototype only
ⓘ
retired ⓘ |
| successor | Boeing C-17 Globemaster III NERFINISHED ⓘ |
| tailConfiguration | T-tail ⓘ |
| testLocation |
Edwards Air Force Base
NERFINISHED
ⓘ
McDonnell Douglas test facilities at Long Beach NERFINISHED ⓘ |
| wingConfiguration | high-wing ⓘ |
| wingspan | approximately 110 ft ⓘ |
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: McDonnell Douglas YC-15 Description of subject: The McDonnell Douglas YC-15 was an experimental U.S. Air Force transport aircraft prototype designed in the 1970s to demonstrate advanced short takeoff and landing capabilities and served as a precursor to the Boeing C-17 Globemaster III.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Boeing C-17 prototype