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ISRO successfully tests hybrid motor to strengthen new propulsion system for rockets

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    Science & Technology
  • Published
    23rd Sep, 2022


The Indian Space Research Organisation (ISRO) has successfully tested a hybrid motor. 

  • The test was conducted at ISRO Propulsion Complex (IPRC) at Mahendragiri in Tamil Nadu.

?Key-highlights of the test

  • The ISRO Liquid Propulsion Systems Center (LPSC) provided support for the test.
  • The hybrid motor used Hydroxyl-terminated polybutadiene (HTPB) as fuel and liquid oxygen (LOX) as the oxidizer.
  • Unlike solid-solid or liquid-liquid combinations, a hybrid motor uses solid fuel and liquid oxidizer. 
  • This will pave way for a new propulsion system for the upcoming launch vehicles. 


  • The motor is said to be advantageous due to its safe and green propulsion system.
  • ISRO also highlighted that hybrid motors facilitate throttling and enable the re-start capability. 

Verifying, please be patient.