specificImpulseVacuum
P21230
predicate
Indicates the specific impulse of a propulsion system measured under vacuum conditions, representing its efficiency in producing thrust per unit of propellant flow in space.
All labels observed (2)
| Label | Occurrences |
|---|---|
| specificImpulseVacuum canonical | 27 |
| specificImpulseInVacuum | 4 |
Description generation (PDg)
The one-sentence description above was generated by prompting gpt-5.1 with the predicate name and this instruction.
Instruction
Given a predicate that represents a relationship or action between entities, generate a one-sentence description explaining its meaning. # Instructions Focus on describing the relationship, not the entities themselves. # Response Format Begin the description with \' Indicates...\'
Input
Predicate: specificImpulseVacuum
Generated description
Indicates the specific impulse of a propulsion system measured under vacuum conditions, representing its efficiency in producing thrust per unit of propellant flow in space.
Sample triples (31)
| Subject | Object |
|---|---|
| Merlin 1A | about 304 s ⓘ |
| Space Shuttle Main Engines | about 452 seconds via predicate surface "specificImpulseInVacuum" ⓘ |
| RL10 | approximately 450 seconds ⓘ |
| Interim Cryogenic Propulsion Stage | approximately 462 seconds ⓘ |
| Reaction Motors XLR99 | about 279 s ⓘ |
| J-2 | approximately 421 s ⓘ |
| RS-25D | about 452 seconds ⓘ |
| Merlin 1D sea-level | approximately 311 s via predicate surface "specificImpulseInVacuum" ⓘ |
| Orbital Maneuvering System | about 316 seconds ⓘ |
| Rocketdyne H-1 | about 289 s ⓘ |
| Vulcain 2 | approximately 434 s ⓘ |
| HM7B | 444 s ⓘ |
|
RS-68
linked to:
RS-68 engine
|
about 410 s ⓘ |
|
RS-68A
linked to:
RS-68 engine
|
about 414 s ⓘ |
| LE-5B | 448 s ⓘ |
| RD-180 | about 338 s via predicate surface "specificImpulseInVacuum" ⓘ |
| Rutherford engine | about 327 s ⓘ |
| Universal Rocket Module URM-1 | about 337 s ⓘ |
| RD-191 | about 337 s ⓘ |
| F-1 engine | about 304 seconds ⓘ |
|
Star 48BV
linked to:
Star 48BV upper stage
|
approximately 292 s ⓘ |
| RD-181 | approximately 339 seconds ⓘ |
| RD-0109 | about 323 s via predicate surface "specificImpulseInVacuum" ⓘ |
| CE-20 | approximately 442 s ⓘ |
| Orion 38 | approximately 294 s ⓘ |
|
Orbital Maneuvering System
linked to:
OMS
|
about 316 s ⓘ |
| AJ10-190 | about 316 seconds ⓘ |
| Delta Cryogenic Second Stage | about 462 s ⓘ |
| Rocketdyne A-7 | approximately 247 s ⓘ |
|
RS-27
linked to:
RS-27 rocket engine
|
about 302 s ⓘ |
|
Service Propulsion System
linked to:
Service Propulsion System (SPS)
|
about 314 s ⓘ |