India’s popular and legendary Rohini Sounding Rocket, RH200 (Fig. 1) with new propellant formulation based on Hydroxyl-terminated Polybutadiene (HTPB) was successfully launched from Thumba Equatorial Rocket Launching Station(TERLS), VSSC at 12:17 hrs on 16th September, 2020. This was 180th successive successful flight of RH200 (Meteorological) sounding rocket and the first flight with HTPB based propellant. The mission achieved an altitude of 62.71 km against the predicted nominal 60.61 km in 123 s and released the chaff payload successfully.

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