S139_Booster

S139 Booster

S139 Booster

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The S139 (S for Solid, 139 for weight of 139 tonnes) is a Solid Rocket Booster manufactured by the Indian Space Research Organisation at the Satish Dhawan Space Centre in the SPROB facility.[1] The rocket motor was first developed for use in the Polar Satellite Launch Vehicle. Later it was utilised in the GSLV MKII. It uses hydroxyl-terminated polybutadiene (HTPB) as a propellant. It has a maximum thrust of 4800 kN.

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Associated rockets

The S139 Booster has been used in 2 major ISRO rockets.

It is used in the PSLV as its core stage since 1993.[2]

It is also used as a core stage in Geosynchronous Satellite Launch Vehicle MKII rocket.[3]

It is also the part of a variant of the Unified Launch Vehicle which is under development.[4]

  • The Core stage of the PSLV is the S139 Booster

References

  1. [1]
    "ISRO to increase production of solid booster engines to make more powerful rockets". Tech2. 2018-11-29. Retrieved 2021-08-09.
  2. [2]
    "PSLV - ISRO". www.isro.gov.in. Archived from the original on 2019-03-23. Retrieved 2021-08-11.
  3. [3]
    "GSLV - ISRO". www.isro.gov.in. Archived from the original on 2019-06-21. Retrieved 2021-08-11.
  4. [4]
    "ISRO Unified Launch Vehicle (ULV)". forum.nasaspaceflight.com. Retrieved 2021-08-11.


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