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HAL delivers biggest cryogenic propellant tank to ISRO


  • The C32-LH2 tank is a developmental cryogenic propellant tank of aluminium alloy designed for improving the payload capability of GSLV MK-III launching vehicle.

  • The four meter diametric tank is of 8 meter length to load 5755 kg propellant in the 89 cubic meter volume.

  • Total length of weld carried out in the tank was 115 meter at different stages to the quality requirement of 100 percent tests on radiography, Die penetrant check and Leak proof.

About Hindustan Aeronautics Limited (HAL)

  • Hindustan Aeronautics Limited is an Indian state-owned aerospace and defence company headquartered in Bangalore, India.

  • Founded in 1940, it is governed under the management of the Indian Ministry of Defence.

  • HAL as a strategic reliable partner, has been associating with ISRO for the prestigious space programs since last five decades.

  • HAL has supplied critical structures, tankages, satellite structures for the PSLV, GSLV-MkII and GSLV-MkIII launch vehicle.

  • Various new projects like PS2/GS2 integration, Semi-Cryo structure fabrication and manufacture of cryo and semi cryo engines are being taken up at HAL, for which setting up of necessary infrastructure and facilities is nearing completion.

Cryogenic propellant

  • A cryogenic engine/ cryogenic stage is the last stage of space launch vehicles which makes use of Cryogenics.

  • A cryogenic engine provides more force with each kilogram of cryogenic propellant it uses compared to other propellants, such as solid and liquid propellant rocket engines and is more efficient.

  • Cryogenic engine makes use of Liquid Oxygen (LOX) and Liquid Hydrogen (LH2) as propellants which liquefy at -183 deg C and -253 deg C respectively.

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