Science

Sounding rocket Rohini launched with new propellant | India Information

Summary

BENGALURU: The Indian Area Analysis Organisation (Isro), earlier this month, launched Rohini Sounding Rocket (RH200) with a brand new propellant formulation based mostly on Hydroxyl-terminated Polybutadiene (HTPB) from the Thumba Equatorial Rocket Launching Station (TERLS) at its Vikram Sarabhai Area […]

BENGALURU: The Indian Area Analysis Organisation (Isro), earlier this month, launched Rohini Sounding Rocket (RH200) with a brand new propellant formulation based mostly on Hydroxyl-terminated Polybutadiene (HTPB) from the Thumba Equatorial Rocket Launching Station (TERLS) at its Vikram Sarabhai Area Centre (VSSC).
“This was 180th successive profitable flight of RH200 (meteorological) sounding rocket and the primary flight with HTPB based mostly propellant. The mission achieved an altitude of 62.7km towards the anticipated nominal 60.6km in 123 seconds and launched the chaff payload efficiently. Efficiency of the motor was regular,” Isro stated.
India began its house journey with the institution of the TERLS on November 21, 1963 by launching the primary sounding rocket from Indian soil. Subsequently on November 21, 1967 the primary Indian made sounding rocket, RH75 was efficiently launched.
“Over time, Isro has developed numerous sounding rockets for quite a lot of scientific experiments & meteorological research. At present, the RH200, RH300 MkII and RH560 Mk-III rockets are operational which have been developed through the early part of our journey in rocketry,” Isro added.
The primary and second phases of the RH200 rocket are powered by stable motors. Because the inception of the RH200 rocket, each stable phases are processed utilizing polyvinyl chloride (PVC) based mostly propellant.
“…As in comparison with PVC based mostly propellants, HTPB based mostly propellant is extra energetic with greater mechanical and interface properties and has much less defects because of decrease processing temperature,” Isro stated.
The house company added that contemplating these benefits, efforts have been made to exchange PVC based mostly propellant with HTPB based mostly propellant for RH200 rocket and collection of trials have been carried out to attain desired properties. As well as, composite paper tube based mostly insulation has been carried out to reinforce interface properties and rigidity with HTPB propellant.
“Previous to maiden flight, efficiency of the RH200 phases have been validated by conducting 4 static checks for first stage and two static checks for second stage,” Isro stated.

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