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PSOM-XL

PSOM-XL is ISRO’s extended solid-propellant strap-on motor used in the PSLV-XL configuration; six extended strap-ons augment the S139 core first stage.

Identity

Aliases
PSOM XLPSLV-XL strap-on motor
Domains
spaceflight
Identity Level
model
Kind
solid-rocket-motor
Name
PSOM-XL
Status
active

Details

Description
PSOM-XL is ISRO’s extended solid-propellant strap-on motor used in the PSLV-XL configuration; six extended strap-ons augment the S139 core first stage.
Propellants
HTPB

Links

Assets & Meta

Creation Time
August 13, 2026 at 22:30:39 UTC
Updated Time
August 13, 2026 at 22:30:39 UTC

Other

Sources
  • Note
    ISRO distinguishes PSLV-XL as using six extended strap-ons and describes the S139 core first stage.
    Publisher
    Indian Space Research Organisation
    Title
    Polar Satellite Launch Vehicle (PSLV)
  • Note
    ISRO identifies six PSOM-XL strap-on motors, each carrying twelve tonnes of solid propellant, on PSLV-C11.
    Publisher
    Indian Space Research Organisation
    Title
    PSLV-C11 / Chandrayaan-1