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The Indian Space Research Organization (ISRO) has achieved a major achievement in its human space flight programme. The space agency has successfully tested a new start-up method for the CE20 cryogenic engine, which will power the Gaganyaan mission on the LVM3 launch vehicle. This indigenously developed engine was tested on November 7 at ISRO’s Propulsion Complex in Mahendragiri, Tamil Nadu. During this the engine was ignited for 10 seconds.
Engine achieved success in bootstrap start
A multi-element igniter was used for both the thrust chamber and gas generator to enable bootstrap starting of the CE20 engine. After ignition of the thrust chamber the gas generator was ignited at tank head conditions and the turbopumps were started without the use of the startup system. This is the first time a gas-generator cycle cryogenic engine has achieved this feat without an auxiliary stored-gas system.
New method will be helpful in Gaganyaan mission
The bootstrap start method allows the turbopumps to spin automatically, allowing the engine to smoothly return to steady operating state. This innovation significantly enhances the capabilities of the LVM3 rocket by making it lighter and more efficient. It also enables ISRO to easily restart multiple times during flight, which is important for multi-orbit deployments, complex mission profiles and human spaceflight requirements.
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