PS4
PS4 is the fourth-stage propulsion system of ISRO’s Polar Satellite Launch Vehicle; ISRO documents the stage as a liquid-propulsion twin-engine configuration, with model-level engine identity intentionally left unspecified here.
Identity
- Aliases
- PS-4PSLV fourth stage
- Domains
- spaceflight
- Identity Level
- integrated-system
- Kind
- integrated-propulsion-system
- Name
- PS4
- Status
- active
Details
- Description
- PS4 is the fourth-stage propulsion system of ISRO’s Polar Satellite Launch Vehicle; ISRO documents the stage as a liquid-propulsion twin-engine configuration, with model-level engine identity intentionally left unspecified here.
Links
- Official Url
- https://www.isro.gov.in/ISRO_EN/PSLV_CON.html
Assets & Meta
- Creation Time
- August 13, 2026 at 22:32:49 UTC
- Updated Time
- August 13, 2026 at 22:32:49 UTC
Other
- Sources
- Note
- ISRO identifies PSLV as a four-stage vehicle and distinguishes the liquid-propulsion upper stages.
- Publisher
- Indian Space Research Organisation
- Title
- Polar Satellite Launch Vehicle (PSLV)
- Note
- ISRO identifies the fourth stage as a twin-engine configuration with liquid propellant; no narrower engine model is asserted.
- Publisher
- Indian Space Research Organisation
- Title
- PSLV-C11 / Chandrayaan-1