Q79) Geosynchronous Satellite Launch Vehicle (GSLV)-D6 was successfully launched from the Second Launch Pad at the Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota in Andhra Pradesh. Consider the following statements related to it.
1) GSLV-D6 inducted 2117 kg GSAT-6, an advanced communication satellite into a Geosynchronous Transfer Orbit (GTO).
2) The satellite is intended to provide V-band communication services in the country
3) This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight
4) A Cryogenic rocket stage is less efficient as it provides less thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages
5) The GSAT or Geosynchronous satellite is a constellation of communication satellites developed by the Indian Space Research Organisation (ISRO) with an objective to make India self-reliant in broadcasting services.
Which of the statements given above are correct?
Q79) Geosynchronous Satellite Launch Vehicle (GSLV)-D6 was successfully launched from the Second Launch Pad at the Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota in Andhra Pradesh. Consider the following statements related to it.
1) GSLV-D6 inducted 2117 kg GSAT-6, an advanced communication satellite into a Geosynchronous Transfer Orbit (GTO).
2) The satellite is intended to provide V-band communication services in the country
3) This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight
4) A Cryogenic rocket stage is less efficient as it provides less thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages
5) The GSAT or Geosynchronous satellite is a constellation of communication satellites developed by the Indian Space Research Organisation (ISRO) with an objective to make India self-reliant in broadcasting services.
Which of the statements given above are correct?
The correct option is C Only 1,3,5
Ans:79)(c)Expl: A Cryogenic rocket stage is more efficient and provides more thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages.
The satellite is intended to provide S-band communication services in the country.
Key Features of GSLV-D6
- It is the ninth flight of GSLV. It is also the fifth developmental flight of GSLV.
- This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight. The flight is significant since it intends to continue the testing of CUS.
- It is configured with all its three stages including the CUS similar to the ones successfully flown during the previous GSLV-D5 mission in January 2014. GSLV-D5 successfully placed GSAT-14 satellite carried on-board in the intended GTO very accurately.
Importance of Cryogenic Upper Stage (CUS)
A Cryogenic rocket stage is more efficient and provides more thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages.
The cryogenic stage is technically a very complex system compared to solid or earth-storable liquid propellant stages due to its use of propellants at extremely low temperatures and the associated thermal and structural challenges.
Oxygen liquifies at -183 C and Hydrogen at -253 C. The propellants, at these low temperatures, are to be pumped using turbo pumps running at around 40,000 rpm.
About GSAT System
- The GSAT or Geosynchronous satellite is a constellation of communication satellites developed by the Indian Space Research Organization (ISRO) with an objective to make India self-reliant in broadcasting services.
- Satellites are called GSAT because they function in a geosynchronous orbit around the Earth.
- It is designed to inject 2 ton class of communication satellites into GTO.
- The first satellite in the series GSAT-1 was launched in April 2001.
Only 1,3,5
Ans:79)(c)Expl: A Cryogenic rocket stage is more efficient and provides more thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages.
The satellite is intended to provide S-band communication services in the country.
Key Features of GSLV-D6
- It is the ninth flight of GSLV. It is also the fifth developmental flight of GSLV.
- This is the third time the indigenously developed Cryogenic Upper Stage (CUS) is being carried on-board during a GSLV flight. The flight is significant since it intends to continue the testing of CUS.
- It is configured with all its three stages including the CUS similar to the ones successfully flown during the previous GSLV-D5 mission in January 2014. GSLV-D5 successfully placed GSAT-14 satellite carried on-board in the intended GTO very accurately.
Importance of Cryogenic Upper Stage (CUS)
A Cryogenic rocket stage is more efficient and provides more thrust for every kilogram of propellant it burns compared to solid and earth-storable liquid propellant rocket stages.
The cryogenic stage is technically a very complex system compared to solid or earth-storable liquid propellant stages due to its use of propellants at extremely low temperatures and the associated thermal and structural challenges.
Oxygen liquifies at -183 C and Hydrogen at -253 C. The propellants, at these low temperatures, are to be pumped using turbo pumps running at around 40,000 rpm.
About GSAT System
- The GSAT or Geosynchronous satellite is a constellation of communication satellites developed by the Indian Space Research Organization (ISRO) with an objective to make India self-reliant in broadcasting services.
- Satellites are called GSAT because they function in a geosynchronous orbit around the Earth.
- It is designed to inject 2 ton class of communication satellites into GTO.
- The first satellite in the series GSAT-1 was launched in April 2001.
