What is Vikas Engine?

Vikas Engine / UH25  is a liquid fuelled rocket engine indigenously developed by ISRO, India. It is used in the PSLV and GSLV vehicles for space launching satellites Vikas engines are employed in the second stage of India’s Polar Satellite Launch Vehicle (PSLV) as well as the second and the four strap-on stages of the Geo-synchronous Satellite Launch Vehicle (GSLV). The engine uses UH25 (a mixture of unsymmetrical di-methyl hydrazine and hydrazine hydrate) as fuel and nitrogen tetroxide as oxidiser with maximum thrust of about 725 kN.