What's New :

ISRO eyeing 200th successful launch of Rohini RH¬200 sounding rocket in a row

  • Published
    29th Sep, 2022
Context

In a few weeks’ time, the Indian Space Research Organisation (ISRO) hopes to achieve a remarkable feat — the 200th successful launch of the Rohini RH-200 sounding rocket in a row.

About

About Sounding Rocket

  • Sounding rockets are one or two-stage solid propellant rockets used for probing the upper atmospheric regions and for space research. 
    • Sounding in the rocket context is equivalent to "taking a measurement".
  • The rockets are used to launch instruments from 48 to 145 km above the surface of the Earth, the altitude generally between weather balloons and satellites.
  • The maximum altitude for balloons is about 40 km and the minimum for satellites is approximately 121 km.
  • They also serve as easily affordable platforms to test or prove prototypes of new components or subsystems intended for use in launch vehicles and satellites.

About Rohini RH-200

  • RH-200 is a two-stage rocket capable of climbing to a height of 70 km bearing scientific payloads.
  • The first and second stages of RH-200 are powered by solid motors. 
    • The ‘200’ in the name denotes the diameter of the rocket in mm.
  • Other operational Rohini variants are RH-300 Mk-II and RH-560 Mk-III.
  • For years, the RH-200 rocket had used a polyvinyl chloride (PVC)-based propellant.
  • The first RH-200 to use a new propellant based on hydroxyl-terminated Polybutadiene (HTPB) was successfully flown from the TERLS in September 2020.
  • The first and second stages of the RH200 rocket are powered by solid motors.
  • Since the inception of the RH200 rocket, both solid stages have been processed using polyvinyl chloride (PVC) based propellant.
  • As compared to PVC based propellants, HTPB based propellant is more energetic, has higher mechanical & interface properties and has less defects due to lower processing temperature.

The ISRO has launched more than 1,600 RH-200 rockets so far. Currently, the RH200, RH300 MkII and RH560 Mk-III rockets are operational which were developed during the early phase of India’s journey in rocketry.

GS Mains Classes GS Classes 2024 GS Classes 2024 UPSC Study Material

Verifying, please be patient.

Our Centers

DELHI (Karol Bagh)

GS SCORE, 1B, Second Floor, Pusa Road, Karol Bagh, New Delhi - 110005 (Beside Karol Bagh Metro Station Gate No. 8)

Get directions on Google Maps

BHUBANESWAR (Jaydev Vihar)

GS SCORE, Plot No.2298, Jaydev Vihar Square, Near HCG Day Care, BBSR - 751013

Get directions on Google Maps

LUCKNOW (Aliganj)

GS SCORE, 2nd Floor, B-33, Sangam Chauraha, Sector H, Aliganj, Lucknow, UP - 226024

Get directions on Google Maps

Enquire Now