Misplaced Pages

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. 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.

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.

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

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

Gallery

• The Core stage of the PSLV is the S139 Booster
• The PS-1 stage with two S12 Solid Rocket Boosters being Integrated with the S139 core stage
• The GSLV-mk.ii also uses the S139 booster as its core stage
• The L40 boosters being integrated with the S139 stage on a GSLV-mk ii

References

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

This rocketry article is a stub. You can help Misplaced Pages by expanding it.

• v
• t
• e

• Rocket stages
• Satish Dhawan Space Centre
• Solid-fuel rockets
• ISRO space launch vehicles
• Expendable space launch systems
• Polar Satellite Launch Vehicle
• Geosynchronous Satellite Launch Vehicle
• Rocketry stubs