Isro workhorse Vikas engine passes key test | India News – Times of India

BENGALURU: The Indian Space Research Organisation (Isro) on Wednesday said it completed a “throttleable Vikas engine test 67% thrust level” on January 30. The overall performance of engine sub-systems, control systems and test facility systems were as expected.
Vikas has been the space agency’s workhorse engine that powers the second stages of PSLV & GSLV, liquid strapons of GSLV and the core liquid stage of LVM3 or GSLV-mk3.
“Liquid engines support throttling of the engine thrust facilitate booster stage recovery in launch vehicles. In order to enable booster stage recovery in future launch vehicle configurations, the first throttling demonstration hot test of the Vikas engine was accomplished on January 30, for a targeted 67% thrust level throttling for a duration of 43 seconds,” Isro said.
“Throttling of the engine was achieved by a closed loop thrust regulation system and the engine had been successfully throttled from the chamber pressure of 58.5 bar in steps of 50 bar, 45 bar & 40 bar, with dwelling at each pressure level for 7 seconds. In addition, the Vikas engine was also throttled down to 45% for the last 3 seconds before the engine shut down,” Isro added.
Isro added that the results of the first hot test of throttleable Vikas Engine indicate stable combustion and subsystem performed in accordance with the prediction.

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