ISRO successfully tests hybrid propulsion system to aid future technologies

ISRO successfully tests hybrid propulsion system to aid future technologies

Subject: Science & technology

Context: ISRO had successfully demonstrated a hybrid propulsion system that used a solid fuel and liquid oxidiser.

Concept:

• The test was conducted at ISRO Propulsion Complex (IPRC) at Mahendragiri, in Tamil Nadu supported by Liquid Propulsion Systems Centre (LPSC).
• The motor used liquid oxygen (LOX) as the oxidizer and Hydroxyl-terminated polybutadiene (HTPB) as fuel.
• The 30kN hybrid motor tested at IPRC is scalable and stackable.

Significance

• Using liquids helps in throttling and control over the flow rate of LOX.
• Unlike conventional solid motors, hybrid technology permits restarting and throttling capabilities on the motor.
• Although both HTPB and LOX are green, LOX is safer to handle.
• Unlike solid-solid or liquid-liquid combinations, a hybrid motor utilizes solid fuel and liquid oxidizer.
• The test aims to discover a new propulsion system for the upcoming launch vehicles.