Mercury-Redstone rocket
E419721
The Mercury-Redstone rocket was an early American launch vehicle used by NASA to send the first U.S. astronauts on suborbital spaceflights during Project Mercury.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Mercury-Redstone | 1 |
| Mercury-Redstone rocket canonical | 1 |
| U.S. Army Redstone rocket program | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4179400 — 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: Mercury-Redstone rocket Context triple: [Rocket Park, hasExhibit, Mercury-Redstone rocket]
-
A.
Jupiter-C rocket
The Jupiter-C rocket was an American launch vehicle developed in the 1950s that successfully orbited the United States’ first satellite, Explorer 1, marking a key milestone in the early space race.
-
B.
Vanguard rocket
The Vanguard rocket was an early American expendable launch vehicle developed in the 1950s to place the first U.S. satellites into orbit during the early years of the Space Race.
-
C.
Saturn I
Saturn I was an early American expendable launch vehicle developed by NASA that served as a precursor to the more powerful Saturn IB and Saturn V rockets used in the Apollo program.
-
D.
Mercury-Redstone 4
Mercury-Redstone 4 was NASA’s second crewed Mercury mission, which carried astronaut Gus Grissom on a suborbital flight in 1961 and is known for the premature hatch blow that led to the loss of the Liberty Bell 7 capsule.
-
E.
Mercury-Redstone 3
Mercury-Redstone 3 was the 1961 NASA mission that carried astronaut Alan Shepard on the first American crewed spaceflight, marking a major early milestone in human space exploration.
- 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: Mercury-Redstone rocket Target entity description: The Mercury-Redstone rocket was an early American launch vehicle used by NASA to send the first U.S. astronauts on suborbital spaceflights during Project Mercury.
-
A.
Jupiter-C rocket
The Jupiter-C rocket was an American launch vehicle developed in the 1950s that successfully orbited the United States’ first satellite, Explorer 1, marking a key milestone in the early space race.
-
B.
Vanguard rocket
The Vanguard rocket was an early American expendable launch vehicle developed in the 1950s to place the first U.S. satellites into orbit during the early years of the Space Race.
-
C.
Saturn I
Saturn I was an early American expendable launch vehicle developed by NASA that served as a precursor to the more powerful Saturn IB and Saturn V rockets used in the Apollo program.
-
D.
Mercury-Redstone 4
Mercury-Redstone 4 was NASA’s second crewed Mercury mission, which carried astronaut Gus Grissom on a suborbital flight in 1961 and is known for the premature hatch blow that led to the loss of the Liberty Bell 7 capsule.
-
E.
Mercury-Redstone 3
Mercury-Redstone 3 was the 1961 NASA mission that carried astronaut Alan Shepard on the first American crewed spaceflight, marking a major early milestone in human space exploration.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
expendable launch system
ⓘ
launch vehicle ⓘ sounding rocket ⓘ |
| carriedAstronaut |
Alan Shepard
NERFINISHED
ⓘ
Virgil I. Grissom NERFINISHED ⓘ |
| carriedSpacecraft | Mercury spacecraft ⓘ |
| controlSystem | aerodynamic fins and engine gimbaling ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| crewedLaunches | 2 ⓘ |
| developedFrom |
Redstone missile
ⓘ
linked to:
Redstone missile family
|
| diameter | approximately 1.78 m ⓘ |
| engineType | A-7 rocket engine ⓘ |
| era | early 1960s ⓘ |
| firstFlight | 1960-11-21 ⓘ |
| firstFlightMission | Mercury-Redstone 1A ⓘ |
| firstUSHumanSpaceflightVehicle | true ⓘ |
| flightProfile | suborbital trajectory ⓘ |
| fuel | ethyl alcohol ⓘ |
| guidanceSystem | inertial guidance ⓘ |
| height | approximately 25.4 m ⓘ |
| lastFlight | 1961-07-21 ⓘ |
| lastFlightMission | Mercury-Redstone 4 ⓘ |
| launchComplex |
Launch Complex 5
ⓘ
Launch Complex 6 ⓘ |
| launchDateOfFirstCrewedFlight | 1961-05-05 ⓘ |
| launchDateOfSecondCrewedFlight | 1961-07-21 ⓘ |
| launchSite |
Cape Canaveral Air Force Station
ⓘ
linked to:
Cape Canaveral Space Force Station
|
| liftoffMass | approximately 30,000 kg ⓘ |
| manufacturer |
Chrysler Corporation
ⓘ
linked to:
Chrysler
|
| maximumAltitudeCapability | about 190 km with Mercury capsule ⓘ |
| notableEvent | launched first American astronaut into space ⓘ |
| notableMission |
Mercury-Redstone 3
ⓘ
Mercury-Redstone 4 ⓘ |
| operator |
NASA
ⓘ
U.S. Army ⓘ
linked to:
United States Army
|
| oxidizer | liquid oxygen ⓘ |
| partOf | early American human spaceflight program ⓘ |
| precededBy | Redstone missile test vehicles ⓘ |
| program |
Project Mercury
ⓘ
linked to:
Mercury program
|
| propellantType | liquid-fueled ⓘ |
| safetyFeature | launch escape system for Mercury capsule ⓘ |
| stages | single-stage ⓘ |
| status | retired ⓘ |
| succeededBy |
Mercury-Atlas rocket
ⓘ
linked to:
SM-65 Atlas
|
| successfulLaunches | 6 ⓘ |
| thrustAtLiftoff | about 350 kN ⓘ |
| totalLaunches | 6 ⓘ |
| usedFor |
Project Mercury
ⓘ
linked to:
Mercury program
crewed suborbital spaceflight ⓘ test flights ⓘ |
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: Mercury-Redstone rocket Description of subject: The Mercury-Redstone rocket was an early American launch vehicle used by NASA to send the first U.S. astronauts on suborbital spaceflights during Project Mercury.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Mercury-Redstone rocket
linked to: Mercury-Redstone rocket