PAM-D stage failed to provide required velocity
E673867
The PAM-D stage failed to provide required velocity refers to the malfunction of the Payload Assist Module-D upper stage that left the Westar 6 communications satellite in an incorrect orbit.
All labels observed (1)
| Label | Occurrences |
|---|---|
| PAM-D stage failed to provide required velocity canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7574561 — 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: PAM-D stage failed to provide required velocity Context triple: [Westar 6 stranded in improper orbit, cause, PAM-D stage failed to provide required velocity]
-
A.
PAM
PAM is the IATA airport code for Tyndall Air Force Base, a United States Air Force installation near Panama City, Florida.
-
B.
POMA
POMA is a scholarly journal and conference proceedings series published by the Acoustical Society of America that disseminates research presented at acoustics meetings.
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C.
PMA
PMA is an abbreviation commonly used for the U.S. Department of Agriculture’s former Production and Marketing Administration, which managed agricultural production and commodity marketing programs.
-
D.
PMA
PMA is the station code for Portimão railway station in Portugal’s Algarve region.
-
E.
PIM
PIM is a global consortium of leading business schools that collaborate to promote international management education and student exchanges.
- 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: PAM-D stage failed to provide required velocity Target entity description: The PAM-D stage failed to provide required velocity refers to the malfunction of the Payload Assist Module-D upper stage that left the Westar 6 communications satellite in an incorrect orbit.
-
A.
PAM
PAM is the IATA airport code for Tyndall Air Force Base, a United States Air Force installation near Panama City, Florida.
-
B.
POMA
POMA is a scholarly journal and conference proceedings series published by the Acoustical Society of America that disseminates research presented at acoustics meetings.
-
C.
PMA
PMA is an abbreviation commonly used for the U.S. Department of Agriculture’s former Production and Marketing Administration, which managed agricultural production and commodity marketing programs.
-
D.
PMA
PMA is the station code for Portimão railway station in Portugal’s Algarve region.
-
E.
PIM
PIM is a global consortium of leading business schools that collaborate to promote international management education and student exchanges.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
launch vehicle upper stage anomaly
ⓘ
spaceflight mission failure event ⓘ |
| affected | Westar 6 communications satellite ⓘ |
| associatedWith |
McDonnell Douglas (PAM-D manufacturer)
ⓘ
linked to:
McDonnell Douglas
|
| category |
spacecraft deployment anomaly
ⓘ
upper stage propulsion failure ⓘ |
| caused | insertion of Westar 6 into incorrect orbit ⓘ |
| causeOf | insurance claim for Westar 6 ⓘ |
| consequence | need for satellite retrieval mission ⓘ |
| failureOutcome |
Westar 6 not reaching planned geostationary orbit by itself
ⓘ
linked to:
Westar 6 stranded in improper orbit
|
| failureType | underperformance of solid-propellant upper stage ⓘ |
| hasConsequence |
need for complex on-orbit rendezvous and capture operations
ⓘ
reputation impact for PAM-D upper stage reliability ⓘ |
| impact |
demonstration of on-orbit satellite retrieval capability
ⓘ
financial loss risk for satellite operator ⓘ |
| involves |
Payload Assist Module-D
ⓘ
linked to:
Payload Assist Module
Space Shuttle mission STS-41B ⓘ Westar 6 ⓘ |
| launchProvider | NASA Space Shuttle program ⓘ |
| ledTo | planning of satellite retrieval on STS-51A ⓘ |
| location | low Earth orbit ⓘ |
| missionDesignation | Westar 6 deployment mission ⓘ |
| occurredDuring | STS-41B ⓘ |
| occurredOn | 1984-02-03 ⓘ |
| operator | NASA ⓘ |
| orbitAchieved | lower-than-planned elliptical orbit ⓘ |
| orbitIntended | geostationary transfer orbit ⓘ |
| partOf | history of Space Shuttle satellite deployment missions ⓘ |
| payloadName | Westar 6 ⓘ |
| payloadOwner | Western Union ⓘ |
| payloadType | communications satellite ⓘ |
| relatedEvent | retrieval of Westar 6 by Space Shuttle mission STS-51A ⓘ |
| relatedProgram | Space Shuttle commercial satellite deployment program ⓘ |
| relatedTo | PAM-D stage failure on Palapa B2 ⓘ |
| relatedVehicle | PAM-D solid rocket motor ⓘ |
| resultedIn | stranded Westar 6 in lower-than-planned orbit ⓘ |
| usedUpperStage | PAM-D ⓘ |
| usedVehicle | Space Shuttle Challenger ⓘ |
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: PAM-D stage failed to provide required velocity Description of subject: The PAM-D stage failed to provide required velocity refers to the malfunction of the Payload Assist Module-D upper stage that left the Westar 6 communications satellite in an incorrect orbit.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.